RAD 230 Exams PDF

‭CHAPTER 1-4‬ ‭Question 1‬ ‭1/1‬ ‭Energy is defined as:‬ ‭Show answer choices‬ ‭A force exerted by a body‬ ‭Anything that occupies space and has shape‬ ‭The ability to do work‬ ‭The degree of gravity‬ ‭The quantity of matter‬ ‭Question 2‬ ‭1/1‬ ‭Radiation is:‬ ‭Show answer choices‬ ‭Energ...

‭CHAPTER 1-4‬ ‭Question 1‬ ‭1/1‬ ‭Energy is defined as:‬ ‭Show answer choices‬ ‭A force exerted by a body‬ ‭Anything that occupies space and has shape‬ ‭The ability to do work‬ ‭The degree of gravity‬ ‭The quantity of matter‬ ‭Question 2‬ ‭1/1‬ ‭Radiation is:‬ ‭Show answer choices‬ ‭Energy transferred‬ ‭Isotropic emission‬ ‭Kinetic particles‬ ‭Mass with a charge‬ ‭Measured in joules‬ ‭Question 3‬ ‭1/1‬ ‭Approximately how many known elements are there?‬ ‭Show answer choices‬ ‭50‬ ‭100‬ ‭150‬ ‭200‬ ‭300‬ ‭Question 4‬ ‭1/1‬ ‭The only element that is not placed in any group of the periodic table is:‬ ‭Show answer choices‬ ‭Helium‬ ‭Hydrogen‬ ‭Plutonium‬ ‭Tungsten‬ ‭Uranium‬ ‭Question 5‬ ‭1/1‬ ‭A single unit of electromagnetic radiation is also called a/an:‬ ‭Show answer choices‬ ‭Ion‬ ‭Photon‬ ‭Proton‬ ‭Quark‬ ‭Question 6‬ ‭1/1‬ ‭Which of the following has a constant value for all electromagnetic radiation?‬ ‭Show answer choices‬ ‭Frequency‬ ‭Mass‬ ‭Origin‬ ‭Velocity‬ ‭Wavelength‬ ‭Question 7‬ ‭1/1‬ ‭All except which of the following help to reduce patient dose?‬ ‭Show answer choices‬ ‭Cones‬ ‭Filtration‬ ‭Gonadal shields‬ ‭Intensifying screens‬ ‭Radiographic grids‬ ‭Question 8‬ ‭1/1‬ ‭"Generally, x-ray examinations are reserved for which of the following?"‬ ‭Show answer choices‬ ‭Asymptomatic patients‬ ‭Older patients‬ ‭Patients who are not pregnant‬ ‭Symptomatic patients‬ ‭X-ray personnel‬ ‭Question 9‬ ‭1/1‬ ‭Which of the following units of energy is most fundamental?‬ ‭Show answer choices‬ ‭Calorie‬ ‭Electron volt‬ ‭Erg‬ ‭Joule‬ ‭Kilowatt-hour‬ ‭Question 10‬ ‭1/1‬ ‭Which of the following is the primary method of heat dissipation from the rotating anode‬ ‭of an x-ray tube?‬ ‭Show answer choices‬ ‭Conduction‬ ‭Convection‬ ‭Convention‬ ‭Radiation‬ ‭Reduction‬ ‭Question 11‬ ‭1/1‬ ‭Radioisotopes:‬ ‭Show answer choices‬ ‭Are ionized‬ ‭Are made with x-rays‬ ‭Are stable atoms‬ ‭Have closed electron shells‬ ‭Have unstable nuclei‬ ‭Question 12‬ ‭1/1‬ ‭Which of the following terms is not associated with visible-light interaction?‬ ‭Show answer choices‬ ‭Absorption‬ ‭Reflection‬ ‭Refraction‬ ‭Transmission‬ ‭Vaporization‬ ‭Question 13‬ ‭1/1‬ ‭Which statement about visible light is correct?‬ ‭Show answer choices‬ ‭Black glass is lucent.‬ ‭"If matter absorbs visible light, it is transparent"‬ ‭"If matter attenuates visible light, it is opaque"‬ ‭"If visible light is transmitted but attenuated, the matter is transparent"‬ ‭"If visible light is transmitted unattenuated, the matter is lucent."‬ ‭Question 14‬ ‭1/1‬ ‭"In radiographs of bony structures embedded in soft tissue, the bone is:"‬ ‭Show answer choices‬ ‭Radiolucent‬ ‭Radiopaque‬ ‭Radiorefracted‬ ‭Translucent‬ ‭Transopaque‬ ‭Question 15‬ ‭1/1‬ ‭All except which of the following help to reduce patient dose?‬ ‭Show answer choices‬ ‭Cones‬ ‭Filtration‬ ‭Gonadal shields‬ ‭Intensifying screens‬ ‭Radiographic grids‬ ‭Question 16‬ ‭1/1‬ ‭Which of the following is an example of an x-ray beam collimator?‬ ‭Show answer choices‬ ‭Dead-man switch‬ ‭Elapsed timer‬ ‭Filter‬ ‭Positive-beam limitation (PBL)‬ ‭Radiographic grid‬ ‭Question 17‬ ‭1/1‬ ‭Which of the following is a classic radiologic unit?‬ ‭Show answer choices‬ ‭Ampere‬ ‭Coulomb/kilogram‬ ‭Joule‬ ‭REM‬ ‭Sievert‬ ‭Question 18‬ ‭1/1‬ ‭What common radiologic unit results from the following? millicoulomb × second =‬ ‭Show answer choices‬ ‭ESE‬ ‭kVp‬ ‭mA‬ ‭PBL‬ ‭SID‬ ‭Question 19‬ ‭1/1‬ ‭The fundamental unit of force is the:‬ ‭Show answer choices‬ ‭Coulomb‬ ‭Joule‬ ‭Newton‬ ‭Roentgen‬ ‭Volt‬ ‭Question 20‬ ‭1/1‬ ‭Which of the following statements about work is true?‬ ‭Show answer choices‬ ‭It can be measured in watts‬ ‭It depends on time‬ ‭It has units the same as energy‬ ‭It is measured in newtons‬ ‭It is performed when a large weight is held motionless.‬ ‭Question 21‬ ‭1/1‬ ‭Which of the following is the primary method of heat dissipation from the rotating anode‬ ‭of an x-ray tube?‬ ‭Show answer choices‬ ‭Conduction‬ ‭Convection‬ ‭Convention‬ ‭Radiation‬ ‭Reduction‬ ‭Question 22‬‭1/1‬ ‭A 1-degree change is equal in thermal energy for which two scales?‬ ‭Show answer choices‬ ‭Absolute and kelvin‬ ‭Celsius and absolute‬ ‭Celsius and Fahrenheit‬ ‭Celsius and kelvin‬ ‭Fahrenheit and kelvin‬ ‭Question 23‬ ‭1/1‬ ‭The horizontal rows in the periodic table are called:‬ ‭Show answer choices‬ ‭Articles‬ ‭Compounds‬ ‭Groups‬ ‭Molecules‬ ‭Periods‬ ‭Question 24‬ ‭1/1‬ ‭Which of the following is a transitional element?‬ ‭Show answer choices‬ ‭Barium‬ ‭Carbon dioxide‬ ‭Iodine‬ ‭Tungsten‬ ‭Xenon‬ ‭Question 25‬ ‭1/1‬ ‭The periodic chart of elements is attributed to:‬ ‭Show answer choices‬ ‭Dimitri Mendeleev‬ ‭Ernest Rutherford‬ ‭J.J. Thomson‬ ‭John Dalton‬ ‭Niels Bohr‬ ‭Question 26‬ ‭1/1‬ ‭The binding energy of an electron to a nucleus:‬ ‭Show answer choices‬ ‭Increases with increasing distance from the nucleus‬ ‭Is higher for an L-shell electron than for an M-shell electron‬ ‭Is higher for a low-Z atom than for a high-Z atom‬ ‭Is higher for an N-shell than for an M-shell‬ ‭Depends on the size of an electron‬ ‭Question 27‬ ‭1/1‬ ‭Which of the following is a fundamental particle?‬ ‭Show answer choices‬ ‭Alpha‬ ‭Beta‬ ‭Electron‬ ‭Gamma‬ ‭Hydrogen‬ ‭Question 28‬ ‭1/1‬ ‭When a radioisotope emits a beta particle:‬ ‭Show answer choices‬ ‭A gamma ray is always emitted‬ ‭A neutron is converted to a proton‬ ‭A proton is converted to a neutron‬ ‭An electron is converted to a beta particle‬ ‭An x-ray is always emitted‬ ‭Question 29‬ ‭0/1‬ ‭"After beta emission, the nucleus has:"‬ ‭Show answer choices‬ ‭Decreased in A number by 1‬ ‭Decreased in Z and A numbers by 1‬ ‭Decreased in Z number by 1‬ ‭Increased in A number by 1‬ ‭Increased in Z number by 1‬ ‭Question 30‬ ‭1/1‬ ‭Electrons are:‬ ‭Show answer choices‬ ‭Arranged in orbits around the nucleus‬ ‭Composed of neutrons and protons‬ ‭Organized inside the nucleus‬ ‭Positively charged‬ ‭Usually bundled together‬ ‭Question 31‬ ‭1/1‬ ‭The shape of the radioactive decay curve is:‬ ‭Show answer choices‬ ‭A concave-down curve on linear paper‬ ‭A concave-up curve on semilog paper‬ ‭A straight line on linear paper‬ ‭A straight line on semilog paper‬ ‭Linear and nonthreshold‬ ‭Question 32‬ ‭1/1‬ ‭"When white light is refracted through a prism, the following colors are emitted. Which‬ ‭has the longest wavelength?"‬ ‭Show answer choices‬ ‭Blue‬ ‭Orange‬ ‭Red‬ ‭Ultraviolet‬ ‭Yellow‬ ‭Question 33‬ ‭1/1‬ ‭The principal difference between x-rays and gamma rays is the:‬ ‭Show answer choices‬ ‭Energy‬ ‭Frequency‬ ‭Origin‬ ‭Velocity‬ ‭Wavelength‬ ‭Question 34‬ ‭1/1‬ ‭The development of modern quantum mechanics is attributed to:‬ ‭Show answer choices‬ ‭Albert Nobel‬ ‭Ernest Rutherford‬ ‭Max Planck‬ ‭Niels Bohr‬ ‭William Coolidge‬ ‭Question 35‬ ‭1/1‬ ‭The inverse square law states that:‬ ‭Show answer choices‬ ‭Intensity and distance are proportional.‬ ‭Intensity is directly proportional to the square of the distance.‬ ‭Intensity is inversely proportional to the square of the distance.‬ ‭The square of the intensity is directly proportional to the distance.‬ ‭The square of the intensity is inversely proportional to the distance.‬ ‭Question 36‬ ‭1/1‬ ‭"When Einstein's relativistic equation is used to compute the energy equivalence of‬ ‭matter, it is usual to express such energy in:"‬ ‭Show answer choices‬ ‭Calories‬ ‭Coulombs‬ ‭Ergs‬ ‭Joules‬ ‭Newtons‬ ‭Question 37‬ ‭1/1‬ ‭In Einstein's famous E = mc2 equation, c stands for which of the following?‬ ‭Show answer choices‬ ‭Acceleration of mass‬ ‭Force‬ ‭Mass-energy equivalence‬ ‭The speed of light‬ ‭The theory of relativity‬ ‭Question 38‬ ‭1/1‬ ‭Which of the following is a unit of energy?‬ ‭Show answer choices‬ ‭Gray‬ ‭Joule‬ ‭Newton‬ ‭RAD‬ ‭Sievert‬ ‭Question 39‬ ‭1/1‬ ‭A posteroanterior (PA) chest radiograph delivers approximately what dose to the patient?‬ ‭Show answer choices‬ ‭100 eV‬ ‭100 J‬ ‭100 mR‬ ‭100 μGya‬ ‭100 μGyt‬ ‭Question 40‬ ‭1/1‬ ‭Kinetic energy (KE) is directly proportional to:‬ ‭Show answer choices‬ ‭A vector quantity‬ ‭Acceleration‬ ‭Force‬ ‭Mass‬ ‭Velocity‬ ‭Question 41‬ ‭1/1‬ ‭When a radioisotope emits a beta particle:‬ ‭Show answer choices‬ ‭A gamma ray is always emitted‬ ‭A neutron is converted to a proton‬ ‭A proton is converted to a neutron‬ ‭An electron is converted to a beta particle‬ ‭An x-ray is always emitted‬ ‭Question 42‬ ‭1/1‬ ‭Isomers are atoms that have different:‬ ‭Show answer choices‬ ‭Energy states‬ ‭Filled electron shells‬ ‭Number of neutrons‬ ‭Number of protons‬ ‭Question 43‬ ‭1/1‬ ‭How many half-lives must elapse before the remaining activity is less than 0.1% of the‬ ‭original activity?‬ ‭Show answer choices‬ ‭4 half-lives‬ ‭6 half-lives‬ ‭8 half-lives‬ ‭10 half-lives‬ ‭12 half-lives‬ ‭Question 44‬ ‭4/4‬ ‭Of Roentgen's twelve properties of x-rays, name at least four properties:‬‭1. x-rays are‬ ‭highly penetrating 2. x-rays travel in straight lines 3. x-rays can ionize 4. x-rays‬ ‭produce heat when going through matter‬ ‭Question 45‬ ‭3/3‬ ‭Of the ten commandments of radiation protection, name at least three commandments:‬ ‭1. time, distance, shield 2. do not stand in front of primary beam 3. always wear‬ ‭dosimeter badge outside of lead apron‬ ‭CHAPTER 5-8‬ ‭Question 1‬ ‭1/1‬ ‭Which of the following is a method of electrification?‬ ‭Show answer choices‬ ‭Diffraction‬ ‭Excitation‬ ‭Induction‬ ‭Resonance‬ ‭Transmission‬ ‭Question 2‬ ‭1/1‬ ‭Static electricity:‬ ‭Show answer choices‬ ‭Can make one's hair stand on end‬ ‭Can produce x-rays‬ ‭Can result in magnetism‬ ‭Is the basis for transformer operation‬ ‭Is the study of electric currents‬ ‭Question 3‬ ‭1/1‬ ‭The unit of electrostatic charge is the:‬ ‭Show answer choices‬ ‭Ampere‬ ‭Coulomb‬ ‭Electron volt‬ ‭Newton‬ ‭Volt‬ ‭Question 4‬ ‭1/1‬ ‭The principal electrostatic law states that:‬ ‭Show answer choices‬ ‭A neutron will repel a neutron.‬ ‭A proton will repel a neutron.‬ ‭An electron will repel a neutron.‬ ‭An electron will repel a proton.‬ ‭An electron will repel an electron.‬ ‭Question 5‬ ‭1/1‬ ‭Objects become electrified because of:‬ ‭Show answer choices‬ ‭An excess of neutrons‬ ‭An excess of protons‬ ‭The transfer of electrons‬ ‭The transfer of neutrons‬ ‭The transfer of protons‬ ‭Question 6‬ ‭1/1‬ ‭The energy of characteristic x-rays increases with increasing:‬ ‭Show answer choices‬ ‭Filtration‬ ‭Atomic mass of target material‬ ‭Atomic number of target material‬ ‭kVp‬ ‭Voltage waveform‬ ‭Question 7‬ ‭1/1‬ ‭The autotransformer has only one:‬ ‭Show answer choices‬ ‭Coil‬ ‭Meter‬ ‭Rectifier‬ ‭Switch‬ ‭Turns ratio‬ ‭Question 8‬ ‭1/1‬ ‭Which of the following is directly connected to the autotransformer?‬ ‭Show answer choices‬ ‭Filament‬ ‭kVp meter‬ ‭mA meter‬ ‭Rectifier‬ ‭X-ray tube‬ ‭Question 9‬ ‭1/1‬ ‭A diagnostic x-ray tube is an example of which of the following?‬ ‭Show answer choices‬ ‭Cathode‬ ‭Diode‬ ‭Tetrode‬ ‭Anode‬ ‭Electrode‬ ‭Question 10‬ ‭0/1‬ ‭The cathode is:‬ ‭Show answer choices‬ ‭A diode‬ ‭Designed to supply heat‬ ‭Contains the filament and focusing cup‬ ‭Part of the target‬ ‭Positively charged‬ ‭Question 11‬ ‭1/1‬ ‭Which of the following is the best electric insulator?‬ ‭Show answer choices‬ ‭Aluminum‬ ‭Copper‬ ‭Nickel‬ ‭Water‬ ‭Wood‬ ‭Question 12‬ ‭1/1‬ ‭Milliampere-seconds (mAs) is a unit of:‬ ‭Show answer choices‬ ‭Electric current‬ ‭Electric potentia‬ ‭Electromagnetic force‬ ‭Electromotive force‬ ‭Electrostatic charge‬ ‭Question 13‬ ‭1/1‬ ‭The filament transformer:‬ ‭Show answer choices‬ ‭Has four windings‬ ‭Increases current‬ ‭Increases voltage‬ ‭Is an autotransformer‬ ‭Must have precision resistors‬ ‭Question 14‬ ‭1/1‬ ‭"If a filament transformer has a turns ratio of 0.05 and 200 mA is supplied to the primary side‬ ‭of the transformer, what will be the secondary current?"‬ ‭Show answer choices‬ ‭100‬ ‭400‬ ‭1‬ ‭4‬ ‭Question 15‬ ‭1/1‬ ‭The heel effect results in a smaller effective focal spot and less radiation intensity on the‬ ‭__________ of the x-ray beam.‬ ‭Show answer choices‬ ‭A focusing cup‬ ‭Rotor‬ ‭Cathode‬ ‭Filament‬ ‭Anode‬ ‭Question 16‬ ‭1/1‬ ‭The energy of characteristic x-rays increases with increasing:‬ ‭Show answer choices‬ ‭Filtration‬ ‭Atomic mass of target material‬ ‭Atomic number of target material‬ ‭kVp‬ ‭Voltage waveform‬ ‭Question 17‬ ‭0/1‬ ‭Bremsstrahlung radiation:‬ ‭Show answer choices‬ ‭Are characteristic of target Z‬ ‭Are characteristic of the filter materia‬ ‭Are characteristic of the voltage waveform‬ ‭Have velocity varying from zero to the speed of light‬ ‭Vary in energy as kVp is varied‬ ‭Question 18‬ ‭0/1‬ ‭"When characteristic x-rays are produced, the energy of the x-rays is characteristic of:"‬ ‭Show answer choices‬ ‭The atomic number of the filter‬ ‭The atomic number of the target‬ ‭The outer-shell electron binding energy‬ ‭The mass of filtration‬ ‭The orientation of the target‬ ‭Question 19‬ ‭0/1‬ ‭Electric energy can be converted into:‬ ‭Show answer choices‬ ‭Chemical energy by an x-ray imaging system‬ ‭Electromagnetic energy by a battery‬ ‭Mechanical energy by a battery‬ ‭Nuclear energy in a nuclear reactor‬ ‭Thermal energy by a lamp‬ ‭Question 20‬ ‭1/1‬ ‭Which of the following is the best electric insulator?‬ ‭Show answer choices‬ ‭Aluminum‬ ‭Copper‬ ‭Nickel‬ ‭Water‬ ‭Wood‬ ‭Question 21‬ ‭1/1‬ ‭The number of volts required to cause a current of 40 A in a circuit having a resistance of 5‬ ‭Ω‬ ‭Show answer choices‬ ‭5 V‬ ‭8 V‬ ‭40 V‬ ‭45 V‬ ‭200 V‬ ‭Question 22‬ ‭1/1‬ ‭The flow of 1 C/s in a conductor is equal to:‬ ‭Show answer choices‬ ‭1 Ω‬ ‭1 Ampere‬ ‭1 eV‬ ‭1 kVp‬ ‭1 V‬ ‭Question 23‬ ‭1/1‬ ‭"Considering the positive voltage pulse E to G, how many such pulses occur each second?"‬ ‭Show answer choices‬ ‭15‬ ‭30‬ ‭60‬ ‭120‬ ‭240‬ ‭Question 241/1‬ ‭Given this waveform:‬ ‭Show answer choices‬ ‭The voltage at C is 60 Hz‬ ‭The voltage at D is 60 Hz‬ ‭The voltage at E is +110 V‬ ‭The voltage at E is zero‬ ‭The voltage at H is zero‬ ‭Question 25‬ ‭1/1‬ ‭"If a 60 W lightbulb is operated at 120 V, the current flowing through the bulb is‬ ‭approximately:"‬ ‭Show answer choices‬ ‭0.5 A‬ ‭1Ampere‬ ‭50 A‬ ‭100 A‬ ‭500 A‬ ‭Question 26‬ ‭1/1‬ ‭Electricity is purchased on the basis of the kilowatt hours one consumes. The kilowatt hour‬ ‭also can be expressed in the unit:‬ ‭Show answer choices‬ ‭Amperes per second‬ ‭Joule‬ ‭Newton‬ ‭Volt‬ ‭Watts per ampere‬ ‭Question 27‬ ‭1/1‬ ‭The autotransformer operates on the principle of:‬ ‭Show answer choices‬ ‭Coulombs law‬ ‭Edisons law‬ ‭Faradays law‬ ‭Newtons law‬ ‭Oersteds law‬ ‭Question 28‬ ‭1/1‬ ‭220 V is supplied to 800 primary turns of an autotransformer. What will be the output voltage‬ ‭across 200 secondary turns?‬ ‭Show answer choices‬ ‭27.5 V‬ ‭55 V‬ ‭880 V‬ ‭1760 V‬ ‭3520 V‬ ‭Question 29‬ ‭1/1‬ ‭The filament transformer:‬ ‭Show answer choices‬ ‭Has four windings‬ ‭Increases current‬ ‭Increases voltage‬ ‭Is an autotransformer‬ ‭Must have precision resistors‬ ‭Question 30‬ ‭0/1‬ ‭A rectifier is:‬ ‭Show answer choices‬ ‭Can be a semiconductor‬ ‭Increases current‬ ‭Increases voltage‬ ‭Increases x-ray intensity‬ ‭Question 31‬ ‭0/1‬ ‭The voltage ripple associated with various x-ray generators is:‬ ‭Show answer choices‬ ‭"70.7% for single-phase, full-wave rectification"‬ ‭100% for self-rectification‬ ‭Higher for self-rectification than for half-wave rectification‬ ‭Highest with high frequency‬ ‭Less for single-phase than for three-phase power‬ ‭Question 32‬ ‭1/1‬ ‭The three principal parts of an x-ray imaging system are:‬ ‭Show answer choices‬ ‭"Anode, cathode, and focusing cup"‬ ‭"Anode, cathode, and high-voltage generator"‬ ‭"X-ray tube, control console, and high-voltage generator"‬ ‭"X-ray tube, high-voltage generator, and image receptor"‬ ‭"X-ray tube, protective housing, and high-voltage"‬ ‭Question 33‬ ‭1/1‬ ‭A diagnostic x-ray tube is an example of which of the following?‬ ‭Show answer choices‬ ‭Cathode‬ ‭Diode‬ ‭Tetrode‬ ‭Anode‬ ‭Electrode‬ ‭Question 34‬ ‭1/1‬ ‭"If saturation is achieved and the filament current is fixed, tube current:"‬ ‭Show answer choices‬ ‭Decreases with use‬ ‭Falls with increasing kVp‬ ‭Remains fixed‬ ‭Rises with increasing exposure time‬ ‭Rises with increasing kVp‬ ‭Question 35‬ ‭1/1‬ ‭Tungsten is the choice material for x-ray anodes because of its:‬ ‭Show answer choices‬ ‭High atomic number‬ ‭High rpm‬ ‭High x-ray intensity‬ ‭Low atomic number‬ ‭Low rpm‬ ‭Question 36‬ ‭1/1‬ ‭If radiographic technique in a tungsten target at 60 kVp/80 mAs is changed to 80 kVp/80‬ ‭mAs:‬ ‭Show answer choices‬ ‭Additional filtration is required.‬ ‭Bremsstrahlung x-ray intensity remains unchanged‬ ‭Characteristic x-ray intensity remains unchanged‬ ‭The number of projectile electrons increase‬ ‭The number of x-rays produced increases‬ ‭Question 37‬ ‭1/1‬ ‭Which of the following factors primarily affects the low-energy side of the x-ray emission‬ ‭spectrum?‬ ‭Show answer choices‬ ‭Exposure time‬ ‭Filtration‬ ‭Tube current‬ ‭Tube voltage‬ ‭Voltage waveform‬ ‭Question 38‬ ‭1/1‬ ‭The intensity of x-ray exposure is best represented by:‬ ‭Show answer choices‬ ‭The amplitude of the bremsstrahlung x-ray emission spectrum‬ ‭The amplitude of the characteristic x-ray emission spectrum‬ ‭The amplitude of the highest emission spectrum‬ ‭The area under the emission spectrum‬ ‭The energy range of the emission spectrum‬ ‭Question 39‬ ‭1/1‬ ‭An increase in mAs results in an increase in:‬ ‭Show answer choices‬ ‭Average x-ray energy‬ ‭Both characteristic and bremsstrahlung x-rays‬ ‭Minimum wavelength‬ ‭Only the bremsstrahlung x-rays‬ ‭Only the characteristic x-rays‬ ‭Question 40‬ ‭3/3‬ ‭Tungsten is the target material of choice for general radiography for three main reasons:‬ ‭high melting point, high atomic number, high conduction‬ ‭Question 41‬ ‭1/1‬ ‭X-rays that escape through the tube housing is called _____________‬‭leakage radiation‬ ‭Question 42‬ ‭0/1‬ ‭Electrons when they're "boiled off" from the cathode side, this is referred to as thermionic‬ ‭efficiency.‬ ‭T‬ ‭True‬ ‭F‬ ‭False‬ ‭Feedback‬ ‭thermionic emission‬ ‭Question 43‬ ‭1/1‬ ‭Unlike charges attract; like charges repel.‬ ‭T‬ ‭True‬ ‭F‬ ‭False‬ ‭Question 44‬ ‭1/1‬ ‭The external portion of the x-ray tube consist of the cathode and anode.‬ ‭T‬ ‭True‬ ‭F‬ ‭False‬ ‭Question 45‬ ‭1/1‬ ‭The external portion of the x-ray tube consist of the cathode and anode.‬ ‭T‬ ‭True‬ ‭F‬ ‭False‬ ‭Question 46‬ ‭1/1‬ ‭The filament transformer is a step-down transformer; therefore the voltage supplied to the‬ ‭filament is lower (by a factor equal to the turns ratio) than the voltage supplied to the filament‬ ‭transformer.‬ ‭T‬ ‭True‬ ‭F‬ ‭False‬ ‭Question 47‬ ‭1/1‬ ‭This component automatically terminates the exposure when the IR has received the‬ ‭required radiation intensity.‬‭AEC‬ ‭Question 48‬ ‭1/1‬ ‭This component automatically terminates the exposure when the IR has received the‬ ‭required radiation intensity.‬‭AEC‬ ‭Question 49‬ ‭0/1‬ ‭Inherent Filtration removes long energy radiation which can damage to the patients skin and‬ ‭potentially develop skin reddening (Erythema).‬ ‭T‬ ‭True‬ ‭F‬ ‭False‬ ‭Feedback‬ ‭Added filtration‬ ‭Question 50‬ ‭1/1‬ ‭Full-wave rectification or high-frequency voltage generation is used in almost all stationary‬ ‭x-ray imaging systems‬ ‭T‬ ‭True‬ ‭F‬ ‭False‬ ‭Question 51‬ ‭1/1‬ ‭Full-wave rectification or high-frequency voltage generation is used in almost all stationary‬ ‭x-ray imaging systems‬ ‭T‬ ‭True‬ ‭F‬ ‭CHAPTER 9-12‬ ‭Question 1‬ ‭2/2‬ ‭The two common types of x-ray interactions in x-ray imaging are:‬‭compton scatter and‬ ‭photoelectric‬ ‭Question 2‬ ‭1/1‬ ‭When mAs is doubled, the number of projectile electrons striking the tube target is‬ ‭doubled, and therefore the number of x-rays emitted is doubled.‬ ‭T‬ ‭True‬ ‭F‬ ‭False‬ ‭Question 3‬ ‭1/1‬ ‭X-ray quantity is inversely proportional to the square of the distance from the source is‬ ‭known as‬‭inverse square law‬ ‭Question 4‬ ‭1/1‬ ‭Which of the following is not one of the five basic x-ray interactions with matter?‬ ‭Show answer choices‬ ‭Bremsstrahlung‬ ‭Classical scattering‬ ‭Compton scattering‬ ‭Photodisintegration‬ ‭Photoelectric effect‬ ‭Question 5‬ ‭1/1‬ ‭After Compton scattering, the scattered x-ray has:‬ ‭Show answer choices‬ ‭Higher energy‬ ‭Higher frequency‬ ‭Less mass‬ ‭Longer wavelength‬ ‭Lower velocity/energy‬ ‭Question 6‬ ‭1/1‬ ‭The Compton effect is:‬ ‭Show answer choices‬ ‭Also called classical scattering‬ ‭The principal source of image noise (fog)‬ ‭The same as Rayleigh scattering‬ ‭The same as the Thomson effect‬ ‭The source of static marks on film‬ ‭Question 7‬ ‭1/1‬ ‭Once in the CR reader, in order for the IP to be reused again, it will be flooded with:‬ ‭Show answer choices‬ ‭Red light‬ ‭Blue light‬ ‭Green light‬ ‭White/intense light‬ ‭No light‬ ‭Question 8‬ ‭1/1‬ ‭What is the principal difference between screen-film radiography and computed‬ ‭radiography?‬ ‭Show answer choices‬ ‭Analog vs digital‬ ‭Involves light‬ ‭Requires processing‬ ‭The cassette‬ ‭Uses an imaging plate‬ ‭Question 9‬ ‭1/1‬ ‭Doping of a PSP with europium results in:‬ ‭Show answer choices‬ ‭Better contrast resolution‬ ‭Better spatial resolution‬ ‭Higher x-ray absorption‬ ‭Lower patient dose‬ ‭More stimulable light emission‬ ‭Question 10‬ ‭1/1‬ ‭Many milestones stand out in the development of the modern computer, but perhaps the‬ ‭most important is the:‬ ‭Show answer choices‬ ‭CPU‬ ‭Discovery of x-rays‬ ‭ENIAC‬ ‭Flip-flop‬ ‭Transistor‬ ‭Question 11‬ ‭1/1‬ ‭Which of the following would be found in the CPU?‬ ‭Show answer choices‬ ‭Network card‬ ‭A DVD‬ ‭An arithmetic unit‬ ‭LUT‬ ‭Secondary Storage‬ ‭Question 12‬ ‭1/1‬ ‭The quality of an x-ray beam is principally a function of which of the following?‬ ‭Show answer choices‬ ‭Field size‬ ‭Filtration‬ ‭kVp‬ ‭mAs‬ ‭SID‬ ‭Question 13‬ ‭1/1‬ ‭It is often stated that mAs controls quantity and kVp controls:‬ ‭Show answer choices‬ ‭Filtration‬ ‭Filtration‬ ‭Output‬ ‭Quality‬ ‭SID‬ ‭Question 14‬ ‭1/1‬ ‭Which of the following has the lowest effective atomic number?‬ ‭Show answer choices‬ ‭Air‬ ‭Bone‬ ‭Fat/Adipose Tissue‬ ‭Lung‬ ‭Muscle‬ ‭Question 15‬ ‭0/1‬ ‭As a result of photoelectric interaction:‬ ‭Show answer choices‬ ‭An electron is absorbed‬ ‭Photoelectron is created‬ ‭The incident x-ray leaves the atom with more energy‬ ‭The incident x-ray leaves the atom with reduced energy.‬ ‭Question 16‬ ‭1/1‬ ‭Spatial resolution in CR is principally determined by:‬ ‭Show answer choices‬ ‭Fast-scan rate‬ ‭Field of view‬ ‭Laser beam diameter‬ ‭Phosphor size‬ ‭Slow-scan rate‬ ‭Question 17‬ ‭1/1‬ ‭The source of the stimulating light in CR is:‬ ‭Show answer choices‬ ‭Emitted light‬ ‭The laser‬ ‭The optical path‬ ‭The photometer‬ ‭X-radiation‬ ‭Question 18‬ ‭1/1‬ ‭"When the kVp is increased, x-ray quantity:"‬ ‭Show answer choices‬ ‭Decreases in proportion to kVp2‬ ‭Decreases proportionately‬ ‭Increases in proportion to kVp2‬ ‭Increases proportionately‬ ‭Remains the same‬ ‭Question 19‬ ‭1/1‬ ‭In general, x-ray quantity will increase with a/an:‬ ‭Show answer choices‬ ‭Decrease in exposure time‬ ‭Decrease in tube current‬ ‭Increase in distance‬ ‭Increase in filtration‬ ‭Increase in kVp‬ ‭Question 20‬ ‭1/1‬ ‭To maintain a constant optical density, what percentage increase in kVp should be‬ ‭accompanied by a reduction of one-half in mAs?‬ ‭Show answer choices‬ ‭5%‬ ‭10%‬ ‭15%‬ ‭30%‬ ‭50%‬ ‭Question 21‬ ‭1/1‬ ‭The HVL is affected principally by a change in which of the following?‬ ‭Show answer choices‬ ‭Filter thickness‬ ‭kVp‬ ‭mAs‬ ‭SID‬ ‭X-ray intensity‬ ‭Question 22‬ ‭1/1‬ ‭An increase in kVp will _____ x-ray energy and ______ x-ray intensity.‬ ‭Show answer choices‬ ‭Increase; decrease‬ ‭Increase; increase‬ ‭Decrease; increase‬ ‭Decrease; decrease‬ ‭Increase; no effect‬ ‭Question 23‬ ‭1/1‬ ‭An aluminum filter:‬ ‭Show answer choices‬ ‭Decreases the intensity of all energies of the x-ray beam‬ ‭Increases skin dose‬ ‭Is not necessary below 50 kVp‬ ‭Of at least 1 cm is required‬ ‭Reduces the effective energy of the beam‬ ‭Question 24‬ ‭1/1‬ ‭An x-ray beam filter has the greatest effect on dose reduction to the:‬ ‭Show answer choices‬ ‭Gonads‬ ‭Lens‬ ‭Skin‬ ‭Thyroid‬ ‭Whole body‬ ‭Question 25‬ ‭1/1‬ ‭An x-ray beam can be made harder by increasing which of the following?‬ ‭Show answer choices‬ ‭Filtration‬ ‭mA‬ ‭mAs‬ ‭SID‬ ‭SSD‬ ‭Question 26‬ ‭1/1‬ ‭The IP has lead backing that reduces backscatter x-rays.‬ ‭T‬ ‭True‬ ‭F‬ ‭False‬ ‭Question 27‬ ‭4/4‬ ‭The four principal characteristics of any medical image are:‬‭contrast, noise, spatial‬ ‭resolution, artifacts‬ ‭Question 28‬ ‭1/1‬ ‭Which of the following best represents an analog device?‬ ‭Show answer choices‬ ‭A gasoline pump register‬ ‭A DVD player‬ ‭A traditional photograph‬ ‭A point-of-sale register‬ ‭A raffle ticket‬ ‭Question 29‬ ‭1/1‬ ‭The term stored program means which of the following?‬ ‭Show answer choices‬ ‭Digital instead of analog must be used‬ ‭Instructions can be placed in memory‬ ‭Memory can be expanded‬ ‭Only binary data can be manipulated‬ ‭The binary number system must be used.‬ ‭Question 30‬ ‭1/1‬ ‭Which type of computer processing is used in radiologic imaging?‬ ‭Show answer choices‬ ‭Batch processing‬ ‭Off-line processing‬ ‭On-line processing‬ ‭Real-time processing‬ ‭Time-share processing‬ ‭Question 31‬ ‭0/1‬ ‭In order for pair production x-ray interaction to occur, the incident electron must have an‬ ‭energy of at least‬ ‭Show answer choices‬ ‭1.02 KeV‬ ‭1.02 MeV‬ ‭102 mEv‬ ‭10 KeV‬ ‭1.0 MeV‬ ‭Question 32‬ ‭0/1‬ ‭During Photodisintegration x-ray interaction with matter, the nucleus is raised to an‬ ‭excited state and emits a nucleoid or nuclear fragile.‬ ‭T‬ ‭True‬ ‭F‬ ‭False‬ ‭Feedback‬ ‭Double check the spelling- emits a nucleoid or nuclear fragment.‬ ‭Question 33‬ ‭1/1‬ ‭Anatomic structures that readily transmit x-rays:‬ ‭Show answer choices‬ ‭Are called radiolucent‬ ‭Are called radiopaque‬ ‭Have a high effective atomic number‬ ‭Have a high probability for photoelectric effect‬ ‭Usually have high mass density‬ ‭Question 34‬ ‭0/1‬ ‭"As kVp increases, the relative number of x-rays:"‬ ‭Show answer choices‬ ‭That is reflected decreases‬ ‭That is transmitted decreases‬ ‭That interacts by way of Compton effect increases‬ ‭That interacts by way of the photoelectric effect increases‬ ‭That interacts with tissue increase‬ ‭Question 35‬ ‭1/1‬ ‭The reduction in intensity of an x-ray beam after it passes through tissue is called:‬ ‭Show answer choices‬ ‭Absorption‬ ‭Attenuation‬ ‭Exponential‬ ‭Interaction‬ ‭Scattering‬ ‭Question 36‬ ‭1/1‬ ‭"In high-kVp chest radiography, contrast depends most upon:"‬ ‭Show answer choices‬ ‭Atomic number‬ ‭mAs‬ ‭Mass density (body habitus)‬ ‭Mass number‬ ‭SID‬ ‭Question 37‬ ‭1/1‬ ‭More contrast is present from a barium examination than from an iodine examination‬ ‭because:‬ ‭Show answer choices‬ ‭Barium has a higher atomic number‬ ‭Barium has a higher concentration‬ ‭Barium has a higher mass attenuation coefficient‬ ‭The K edge of Ba is higher‬ ‭The luminal size is greater for colon than for ureter‬ ‭Question 38‬ ‭1/1‬ ‭Photoelectric effect interaction is more effective in absorbers with‬ ‭Show answer choices‬ ‭High tissue level‬ ‭Low tissue level‬ ‭Low atomic number‬ ‭High atomic number‬ ‭Remains unchanged‬ ‭Question 39‬ ‭1/1‬ ‭When a radiograph is taken:‬ ‭Show answer choices‬ ‭High kVp is preferred for maximum differential absorption‬ ‭Low kVp is necessary when soft tissue is imaged because it leads to high Compton‬ ‭effect‬ ‭Low kVp is necessary when soft tissue is imaged because it leads to high photoelectric‬ ‭effect‬ ‭The most probable interaction is no interaction‬ ‭"With increasing kVp, differential absorption increases"‬ ‭Question 40‬ ‭1/1‬ ‭Air-contrast studies such as a colon examination are successful principally for which of‬ ‭the following reasons?‬ ‭Show answer choices‬ ‭High-kVp technique is used‬ ‭Low-kVp technique is used‬ ‭There are differences in effective x-ray energy‬ ‭There are differences in mass density‬ ‭X-rays are produced with a continuous-energy spectrum‬ ‭Question 41‬ ‭1/1‬ ‭About how much time can pass between exposing a CR cassette and reading a CR‬ ‭cassette before image quality declines?‬ ‭Show answer choices‬ ‭1 hour‬ ‭10 minutes‬ ‭8 hours‬ ‭3 weeks‬ ‭6 days‬ ‭Question 42‬ ‭1/1‬ ‭Added filtration with addition to inherent filtration will equal to ___________‬ ‭__________________‬‭total filtration‬ ‭Question 43‬‭1/1‬ ‭The inherent filtration found in a general x-ray tube is approximately-‬ ‭Show answer choices‬ ‭0 mm Al‬ ‭0.5 mm Al‬ ‭1.0 mm Al‬ ‭3.0 mm Al‬ ‭10 mm Al‬ ‭Question 44‬ ‭3/3‬ ‭Name at least three input devices for a computer:‬‭mouse, keyboard, microphone‬ ‭Question 45‬‭0/1‬ ‭Telepathy i‬‭s the practice in which radiologists remotely‬‭interpret medical images and‬ ‭report the results.‬ ‭T‬ ‭True‬ ‭F‬ ‭False‬ ‭Feedback‬ ‭Double check the spelling- teleradiography‬ ‭Question 46‬ ‭4/4‬ ‭What are the four principal imaging characteristics?‬‭contrast, noise, spatial resolution,‬ ‭artifact‬ ‭CHAPTER 13-16‬ ‭Question 1‬ ‭This specific radiographic equipment is used to measure the thickness of the anatomy/body‬ ‭part being imaged _____‬‭caliper‬ ‭Question 2‬ ‭The thicker the patient, the less radiation is required to penetrate the patient to expose the‬ ‭IR.‬ ‭T‬ ‭True‬ ‭F‬ ‭False‬ ‭Question 3‬ ‭Radiolucent tissue attenuate less x-rays and appear as white on the radiograph.‬ ‭T‬ ‭True‬ ‭F‬ ‭False‬ ‭Question 4‬ ‭Spatial Resolution refers to the sharpness of an image/radiograph.‬ ‭T‬ ‭True‬ ‭F‬ ‭False‬ ‭Question 5‬ ‭Distortion is the misinterpretation of object size and shape on an image. The two types of‬ ‭distortion are:‬‭elongation and foreshortening‬ ‭Question 6‬ ‭The four prime factors are:‬‭kVp, mA, time, SID‬ ‭Question 7‬ ‭As Radiographers, we're able to use this function on the control panel where the x-ray‬ ‭exposure is terminated when the proper radiation exposure to the IR has been reached.‬‭AEC‬ ‭Question 8‬ ‭If the required technique is 2.5 mAs and the mA station selected is 100 mA, what is the‬ ‭required exposure time?‬ ‭0.010 seconds‬ ‭0.020 seconds‬ ‭0.025 seconds‬ ‭0.25 seconds‬ ‭25 seconds‬ ‭Question 9‬ ‭What are the "3 C's" of digital radiography (DR)?‬‭coupling, collect, capture‬ ‭Question 10‬ ‭CCD is used for indirection conversion digital radiography.‬ ‭T‬ ‭True‬ ‭F‬ ‭False‬ ‭Question 11‬ ‭Which of the following is an advantage of an area beam over SPR in digital radiography?‬ ‭Improved contrast‬ ‭Less scatter‬ ‭Less technique required‬ ‭Low noise‬ ‭Reduced motion blur‬ ‭Question 12‬ ‭Which of the following is used as an image receptor in direct radiography?‬ ‭An image intensifier‬ ‭CaWO4‬ ‭CdW4‬ ‭a-Se‬ ‭Rare earth phosphors‬ ‭Question 13‬ ‭What is the effective atomic number of soft tissue?‬ ‭6.3‬ ‭7.4‬ ‭7.6‬ ‭10.5‬ ‭13.8‬ ‭Question 14‬ ‭For a given anatomic part, the smallest change in mAs that can be perceived on the‬ ‭radiographic image is approximately:‬ ‭5%‬ ‭15%‬ ‭30%‬ ‭50%‬ ‭70%‬ ‭Question 15‬ ‭When radiographic technique is changed from 12.5 mAs, 100 cm SID, to 150 cm SID, what‬ ‭should be the new mAs?‬ ‭18 mAs‬ ‭20 mAs‬ ‭22 mAs‬ ‭28 mAs‬ ‭32 mAs‬ ‭Question 16‬ ‭The radiologic technologist cannot change the type of high-voltage generator used because:‬ ‭A change can be made only by the medical physicist‬ ‭It is fixed at the time of purchase/ you cannot alter‬ ‭Only the radiologic engineer can make that change‬ ‭Only the radiologist can make that change.‬ ‭The service engineer determines this at installation‬ ‭Question 17‬ ‭What is the principal advantage of high-frequency generators?‬ ‭Better spatial resolution‬ ‭Enhanced radiation quality‬ ‭Increased radiation quantity and quality‬ ‭Reduced radiation quantity‬ ‭Reduced radiation quantity and quality‬ ‭Question 18‬ ‭Magnification radiography increases when _____ increases.‬ ‭Focal spot‬ ‭OID‬ ‭SID‬ ‭SOD‬ ‭SSD‬ ‭Question 19‬ ‭A longer grayscale on a radiograph can be obtained by doing which of the following?‬ ‭Increasing kVp‬ ‭Increasing mAs‬ ‭Reducing kVp‬ ‭Reducing mAs‬ ‭Using a larger focal spot‬ ‭Question 20‬ ‭You're examining a patient which requires a three view foot x-ray. However, the patient is‬ ‭unable to place their foot completely flat on the IR for all three positions. As a result, there is‬ ‭OID from this examination. In order to reduce OID, what can you do?‬ ‭Increase SSD‬ ‭Decrease SID‬ ‭Increase SID‬ ‭Increase OID‬ ‭Decrease OID‬ ‭Question 21‬ ‭Distortion of an x-ray image results from unequal:‬ ‭Exposure of the object‬ ‭Focal spot‬ ‭Heel effect‬ ‭Magnification‬ ‭SID‬ ‭Question 22‬ ‭To obtain minimum magnification, one should do which of the following?‬ ‭Make sure the object is positioned on the central axis‬ ‭Position the anatomy close to the image receptor‬ ‭Select a short SID‬ ‭Select a short SSD‬ ‭Use maximum collimation‬ ‭Question 23‬ ‭Which of the following is the principal disadvantage of the use of an area beam versus‬ ‭scanned projection radiography?‬ ‭Increased patient dose‬ ‭Lack of post-examination processing‬ ‭Reduced spatial resolution‬ ‭Scatter radiation‬ ‭Short exposure time‬ ‭Question 24‬ ‭An x-ray system used for direct radiography definitely has which of the following?‬ ‭A linear H&D curve‬ ‭A method of printing film‬ ‭A rapid film changer‬ ‭Access to the Internet‬ ‭At least two video monitors‬ ‭Question 25‬ ‭Which is most important for soft tissue contrast?‬ ‭Contrast resolution‬ ‭Spatial resolution‬ ‭High lp/mm‬ ‭Noise‬ ‭Scatter‬ ‭Question 26‬ ‭Spatial frequency consists of units of:‬ ‭Line length‬ ‭Line pair‬ ‭Line pair/millimeter‬ ‭Millimeter‬ ‭Millimeter/line pair‬ ‭Question 27‬ ‭If the dynamic range of a magnetic resonance imaging system is 12 bits, how many shades‬ ‭of gray are present?‬ ‭1024‬ ‭2048‬ ‭4096‬ ‭8192‬ ‭16,384‬ ‭Question 28‬ ‭Patient radiation dose should be lower when digital imaging is used than when screen-film‬ ‭imaging is used, principally because of:‬ ‭Detective quantum efficiency‬ ‭kVp‬ ‭mAs‬ ‭MTF‬ ‭Noise‬ ‭Question 29‬ ‭Technique creep is an attempt to reduce patient radiation dose by instituting:‬ ‭Increased detective quantum efficiency (DQE)‬ ‭Increased kVp and reduced mAs‬ ‭Increased mAs and reduced kVp‬ ‭Increased mAs and reduced noiseÂ‬ ‭No repeats‬ ‭Question 30‬ ‭Which of the following has the least voltage ripple?‬ ‭High-frequency‬ ‭Single-phase, full-wave‬ ‭Single-phase, half-wave‬ ‭Three-phase, six-pulse‬ ‭Three-phase, 12-pulse‬ ‭Question 31‬ ‭Conventional tomography uses which of the following principles?‬ ‭Tridimensional image‬ ‭Optical illusion‬ ‭Motion blur‬ ‭Random movement‬ ‭Stereoscopy‬ ‭Question 32‬ ‭For a chest radiographic examination, radiographic contrast can be increased by doing which‬ ‭of the following?‬ ‭Increasing the kVp and decreasing the mAs‬ ‭Increasing the OID‬ ‭Increasing the SID‬ ‭Using a faster image receptor‬ ‭Using a high-ratio grid‬ ‭Question 33‬ ‭An anteroposterior examination of the abdomen is taken at 80 kVp, 50 mAs, and 100 cm‬ ‭SID. If the scale of contrast is to be shortened, the radiologic technologist must do which of‬ ‭the following?‬ ‭Increase both mAs and kVp‬ ‭Reduce both mAs and kVp‬ ‭Reduce kVp and increase mAs‬ ‭Reduce mAs and increase kVp‬ ‭Shorten the SID‬ ‭Question 34‬ ‭When radiographic technique factors are adjusted to provide an acceptable image and then‬ ‭filtration is added to the x-ray tube, which of the following will increase?‬ ‭Average energy of the x-ray beam‬ ‭Optical density‬ ‭Patient dose‬ ‭Radiographic contrast‬ ‭Spatial resolution‬ ‭Question 35‬ ‭MTF should be:‬ ‭1 or 100%‬ ‭10%‬ ‭1000%‬ ‭10,000‬ ‭Question 36‬ ‭Using digital radiography, some of the capture element include the following EXCEPT:‬ ‭Sodium Iodide (NaI)‬ ‭cesium iodide (CsI)‬ ‭gadolinium oxysulfide (GdOS)‬ ‭amphorous selenium (a-Se)‬ ‭CMOS‬ ‭Question 37‬ ‭Which of the following has the highest spatial resolution?‬ ‭Gamma Camera‬ ‭Magnetic Resonance Imaging‬ ‭Digital Radiography‬ ‭Ultrasound‬ ‭Mammography‬ ‭Question 38‬ ‭In digital radiography, one would want a low SNR.‬ ‭T‬ ‭True‬ ‭F‬ ‭False‬ ‭Question 39‬ ‭The _____ is the controlling factor of x-ray intensity.‬ ‭kVp‬ ‭mA‬ ‭time (seconds)‬ ‭filtration‬ ‭SID‬ ‭Question 40‬ ‭_____________ reduces patient motion and blur.‬ ‭Fast exposure time‬ ‭Short exposure time‬ ‭Short current‬ ‭Fast current‬ ‭Short breathing instructions‬ ‭Question 41‬ ‭The two types of filtration that can be found within and outside the x-ray tube are:‬‭Aluminum‬ ‭and Copper‬ ‭Question 42‬ ‭The most average body habitus build is a sthenic person.‬ ‭T‬ ‭True‬ ‭F‬ ‭False‬ ‭Question 43‬ ‭Image distortion occurs when there is a misalignment of the x-ray tube (i.e. angulation)‬ ‭T‬ ‭True‬ ‭F‬ ‭False‬ ‭CHAPTER 17-20‬ ‭Question 1‬ ‭1/1‬ ‭The ____________________ deals with patient schedules (radiology), protocol descriptors,‬ ‭diagnostic conclusions/reports, and billing.‬‭RIS‬ ‭Question 2‬ ‭1/1‬ ‭Scotopic deals with bright light vision with cones.‬ ‭T‬ ‭True‬ ‭F‬ ‭False‬ ‭Question 3‬ ‭1/1‬ ‭Photopic deals with dim light vision with rods.‬ ‭T‬ ‭True‬ ‭F‬ ‭False‬ ‭Question 4‬ ‭1/1‬ ‭The best way of viewing a digital display device is at it's peripheral ends.‬ ‭T‬ ‭True‬ ‭F‬ ‭False‬ ‭Question 5‬ ‭2/2‬ ‭Today, now all images displayed on a digital display device is a TV monitor. What are the two‬ ‭common monitors used in radiography?‬‭LED, LCD‬ ‭Question 61/1‬ ‭LCDs has a low intrinsic noise, and this also results in a better ________‬ ‭Show answer choices‬ ‭spatial resolution‬ ‭frequency‬ ‭contrast resolution‬ ‭luminance‬ ‭SNR‬ ‭Question 7‬ ‭1/1‬ ‭Postprocessing the radiographic image includes all of the following except:‬ ‭Show answer choices‬ ‭Annotation‬ ‭Window/Level‬ ‭Magnification‬ ‭Region of Interest (ROI)‬ ‭Image inversion‬ ‭Question 8‬ ‭1/1‬ ‭A hardcopy film/image is the same as viewing that radiograph on a mobile/portable x-ray‬ ‭machine display.‬ ‭T‬ ‭True‬ ‭F‬ ‭False‬ ‭Question 9‬ ‭1/1‬ ‭Using this feature for postprocessing is when the image is opposite color i.e. bone appears‬ ‭as black color and soft tissue/contrast media appear as a white appearance.‬‭inversion‬ ‭Question 10‬ ‭1/1‬ ‭What type of an impression will a radiologist perform when they first glance at an image?‬ ‭Show answer choices‬ ‭Global‬ ‭Social‬ ‭Specific‬ ‭Overall‬ ‭Question 11‬ ‭0/1‬ ‭Higher object contrast is required for image perception under low ___________.‬ ‭Show answer choices‬ ‭illumination‬ ‭ergonomics‬ ‭luminence‬ ‭spatial resolution‬ ‭contrast resolution‬ ‭Question 12‬ ‭1/1‬ ‭How can one evaluate ambient light reflected from the screen of a digital display device?‬ ‭Show answer choices‬ ‭Cycle the room lighting on and off‬ ‭Turn off the screen‬ ‭Turn off the screen and room lighting‬ ‭Turn off the room lighting and cycle screen on and off‬ ‭Turn off the room lighting while viewing the screen‬ ‭Question 13‬ ‭1/1‬ ‭"During the 20th century, image quality control (QC) concentrated on wet chemistry and view‬ ‭boxes. Today, QC concentrates on _____"‬ ‭Show answer choices‬ ‭digital display devices and ergonomics‬ ‭dry chemistry and wet chemistry‬ ‭Pixel size and dynamic range‬ ‭spatial resolution and contrast resolution‬ ‭workstations and reading room‬ ‭Question 14‬ ‭1/1‬ ‭Which of the following image distortions is not associated with a digital display device?‬ ‭Show answer choices‬ ‭Distance‬ ‭Object shape‬ ‭Pincushion‬ ‭Pixel deletion‬ ‭Size‬ ‭Question 15‬ ‭1/1‬ ‭Approximately how long does it take the human eye to focus on an image on a digital display‬ ‭device?‬ ‭Show answer choices‬ ‭1 ms‬ ‭10 ms‬ ‭100 ms‬ ‭200 ms‬ ‭2000 ms‬ ‭Question 16‬ ‭1/1‬ ‭What is an appropriate description of foveal vision?‬ ‭Show answer choices‬ ‭Best visual acuity‬ ‭Dim image‬ ‭High contrast image‬ ‭Image search‬ ‭Peripheral vision‬ ‭Question 17‬ ‭1/1‬ ‭"When the radiologist interprets an image to be abnormal and the image is later shown to be‬ ‭normal, how is that interpretation labelled?"‬ ‭Show answer choices‬ ‭False negative‬ ‭False positive‬ ‭True negative‬ ‭True positive‬ ‭Visual accommodation‬ ‭Question 18‬ ‭1/1‬ ‭Photopic vision is associated with:‬ ‭Show answer choices‬ ‭Night vision‬ ‭Cone vision‬ ‭Dim light‬ ‭Black and white vision‬ ‭Rod vision‬ ‭Question 19‬ ‭1/1‬ ‭The luminance of a digital display device is measured in‬ ‭Show answer choices‬ ‭Candelas‬ ‭Candelas per meter squared‬ ‭Foot-candles‬ ‭Lumens‬ ‭Luxes‬ ‭Question 20‬ ‭1/1‬ ‭Digital display device noise principally affects what image characteristic?‬ ‭Show answer choices‬ ‭Artifacts‬ ‭Contrast resolution‬ ‭Dynamic range‬ ‭Pixel size‬ ‭Spatial resolution‬ ‭Question 21‬ ‭1/1‬ ‭Which of the following electronic medical imaging programs supports patient scheduling and‬ ‭digital image protocols?‬ ‭Show answer choices‬ ‭HIS (Hospital Information System)‬ ‭HL7 (Health Level 7)‬ ‭IHE (Integrating the Healthcare Enterprise)‬ ‭PACS (Picture Archiving and communication System)‬ ‭RIS (Radiology Information System)‬ ‭Question 22‬ ‭1/1‬ ‭Photometry is the science of the:‬ ‭Show answer choices‬ ‭Anatomy of human vision‬ ‭Measurement of photographic images‬ ‭Quantity of light‬ ‭Reflection and refraction of light‬ ‭Measurement of the response of the human eye‬ ‭Question 23‬ ‭1/1‬ ‭"With digital radiography, the cosine law applies to:"‬ ‭Show answer choices‬ ‭Grayscale imaging‬ ‭Image inversion‬ ‭Inverse square law‬ ‭Off-axis viewing‬ ‭Reduced spatial resolution‬ ‭Question 24‬ ‭1/1‬ ‭The fluoroscope was invented by:‬ ‭Show answer choices‬ ‭Alexander Bell‬ ‭Hollis Potter‬ ‭Jan Marconi‬ ‭Thomas Edison‬ ‭Wilhelm Roentgen‬ ‭Question 250/1‬ ‭Where are rods located in the eye?‬ ‭Show answer choices‬ ‭Iris‬ ‭Retina‬ ‭Fovea centralis‬ ‭Pupil‬ ‭Cornea‬ ‭Question 26‬ ‭1/1‬ ‭Which of the following structures is most sensitive to color?‬ ‭Show answer choices‬ ‭Cone‬ ‭Fovea centralis‬ ‭Rod‬ ‭Cornea‬ ‭Iris‬ ‭Question 27‬ ‭1/1‬ ‭Visual acuity is the ability to do which of the following?‬ ‭Show answer choices‬ ‭Control the amount of light entering the eye‬ ‭Detect differences in brightness‬ ‭Distinguish colors‬ ‭Perceive fine detail‬ ‭Vary depth of field‬ ‭Question 28‬ ‭1/1‬ ‭The four principal components of a PACS include each of the following except the:‬ ‭Show answer choices‬ ‭Acquisition system‬ ‭Display system‬ ‭Storage system‬ ‭Storage system‬ ‭Workstation‬ ‭Question 29‬ ‭1/1‬ ‭Which of the following exploded in frequency of application during COVID-19?‬ ‭Show answer choices‬ ‭Computed tomography‬ ‭Nuclear medicine‬ ‭PACS (Picture Archiving and Communication System)‬ ‭RIS (Radiology Information System)‬ ‭Teleradiology‬ ‭Question 30‬ ‭1/1‬ ‭The principal application of DICOM (Digital Information and Communication) is to‬ ‭Show answer choices‬ ‭Describe symptoms and disease‬ ‭Describe the medical imaging procedure‬ ‭Process medical images‬ ‭Process textual data‬ ‭Process workflow profiles‬ ‭Question 31‬ ‭1/1‬ ‭The radiologic technologist is responsible for producing a quality medical image with‬ ‭attention to each of the following except:‬ ‭Show answer choices‬ ‭contrast resolution‬ ‭image artifacts‬ ‭image noise‬ ‭spatial resolution‬ ‭temporal resolution‬ ‭Question 32‬ ‭1/1‬ ‭The ability to detect colors and bright lights is associated with:‬ ‭Show answer choices‬ ‭Cones only vision‬ ‭Rods only vision‬ ‭Foveal vision‬ ‭Peripheral vision‬ ‭Visual search‬ ‭Question 33‬ ‭1/1‬ ‭How do we measure digital image illumination?‬ ‭Show answer choices‬ ‭Illumen‬ ‭Lumen‬ ‭LUX‬ ‭Search‬ ‭Sensitivity‬ ‭Question 34‬ ‭1/1‬ ‭One lumen per square meter is one ____________.‬ ‭Show answer choices‬ ‭cone‬ ‭illumen‬ ‭illux‬ ‭lux‬ ‭rod‬ ‭Question 35‬ ‭1/1‬ ‭Sensitivity is defined as‬ ‭Show answer choices‬ ‭false negative fraction‬ ‭false positive fraction‬ ‭total negative fraction‬ ‭true negative fraction‬ ‭true positive fraction.‬ ‭Question 36‬ ‭1/1‬ ‭Ergonomics requires the quality control (QC) technologist to have some metric data‬ ‭knowledge of each of the following except:‬ ‭Show answer choices‬ ‭illumination‬ ‭noise‬ ‭temperature‬ ‭work schedule‬ ‭workstation‬ ‭Question 37‬ ‭0/1‬ ‭Which of the following occupations do you think should have the most knowledge of‬ ‭ergonomics?‬ ‭Show answer choices‬ ‭Chef‬ ‭Medical physicist‬ ‭Office furniture sales person‬ ‭Radiologic technologist‬ ‭Radiologist‬ ‭Question 38‬ ‭1/1‬ ‭The false positive rate (FPR) could also be properly termed probability of‬ ‭Show answer choices‬ ‭abnormality.‬ ‭condition‬ ‭detection‬ ‭false alarm‬ ‭normal tissue‬ ‭Question 39‬ ‭1/1‬ ‭Which of the following are not associated with performance assessment standards?‬ ‭Show answer choices‬ ‭SMPTE‬ ‭NEMA-DICOM‬ ‭DIN‬ ‭VESA‬ ‭CCD‬ ‭Question 40‬ ‭1/1‬ ‭The cones are concentrated at the center of the retina in an area called the‬ ‭Show answer choices‬ ‭Cornea‬ ‭Iris‬ ‭Fovea Centralis‬ ‭Retina‬ ‭Question 41‬ ‭1/1‬ ‭Higher object contrast is required for image perception under low illuminance.‬ ‭T‬ ‭True‬ ‭F‬ ‭False‬ ‭Question 42‬ ‭1/1‬ ‭PACS’ primary use is to:‬ ‭Show answer choices‬ ‭Postprocess an image‬ ‭Preprocess an image‬ ‭Store digital images‬ ‭Increase the size of the file room‬ ‭Question 43‬ ‭1/1‬ ‭PACS’ primary use is to:‬ ‭Show answer choices‬ ‭Postprocess an image‬ ‭Preprocess an image‬ ‭Store digital images‬ ‭Increase the size of the file room‬ ‭Question 44‬ ‭1/1‬ ‭Compared with a radiographic examination, the primary purpose of a fluoroscopic‬ ‭examination is to visualize:‬ ‭Show answer choices‬ ‭Cross-sectional images‬ ‭Dynamic images‬ ‭Longitudinal images‬ ‭Transverse images‬ ‭Question 45‬ ‭1/1‬ ‭Compared with a radiographic examination, the primary purpose of a fluoroscopic‬ ‭examination is to visualize:‬ ‭Show answer choices‬ ‭Cross-sectional images‬ ‭Dynamic images‬ ‭Longitudinal images‬ ‭Transverse images‬ ‭Question 46‬ ‭1/1‬ ‭Compared with a radiographic examination, the primary purpose of a fluoroscopic‬ ‭examination is to visualize:‬ ‭Show answer choices‬ ‭cross-sectional images‬ ‭dynamic images‬ ‭longitudinal images‬ ‭transverse images‬ ‭Question 47‬ ‭3/3‬ ‭Name at least three principal components of a PACS system:‬‭store image, display image,‬ ‭image retrieval‬