Radiography Terminology Flashcards

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Questions and Answers

In computed radiography, if a cassette has not been used for _______ hours, the IR should be erased.

After myelography, the patient may be taken to _____ for additional studies while contrast is still in the subarachnoid space.

How would digit 0 appear on a digital receptor monitor?

white

A scap Y position is used to demonstrate?

posterior or anterior dislocations of the humerus Signup and view all the answers

Which of the following are true of radiation-induced mutations? (Select all that apply)

Usually harmful Signup and view all the answers

What is the greatest disadvantage of digital imaging?

spatial resolution - inability to record small objects Signup and view all the answers

Scatter radiation will have the greatest effect on which of these qualities?

contrast - fogs the image Signup and view all the answers

Which of the following is a major factor contributing to patients contracting infection while in the hospital?

poor health Signup and view all the answers

Which of the following will cause visible grid lines on a radiograph that was exposed in a bucky device?

bucky device not selected - won't blur out grid lines if not selected Signup and view all the answers

In a busy imaging department, how often should CR imaging plates be cleared?

monthly Signup and view all the answers

In DR, an ADC converts __ to _.

electrical signal to numbers Signup and view all the answers

As grid ratio increases, patient dose __________?

increases Signup and view all the answers

As grid ratio increases, receptor exposure?

decreases Signup and view all the answers

What can determine if there is any separation of the AC joints?

patient erect holding weights Signup and view all the answers

______ patients should be done first for procedures with fasting and laxatives.

debilitated Signup and view all the answers

Breathing technique for AP and Lateral position of upper airway?

slow, deep inspiration Signup and view all the answers

What shielding should be used while fluoroscopy of an infant during an upper GI?

flat contact shield under the pelvis Signup and view all the answers

While using AEC, an increase in KVP will have what effect on the radiograph?

shorter exposure time Signup and view all the answers

S# is determined by dividing ______ by the exposure.

200 Signup and view all the answers

A BE will expose a patient to _______?

10 mSv Signup and view all the answers

What is the best way to stop bleeding?

apply direct pressure Signup and view all the answers

Which of the following affect attenuation of the beam? (Select all that apply)

Thickness of the part Signup and view all the answers

Beam restriction will affect?

contrast - less scatter produced Signup and view all the answers

The proximal end of the fibula is a projection called the ____?

apex Signup and view all the answers

CT scanograms are used for?

long bone measurements Signup and view all the answers

Prep for upper GI?

NPO for at least 8 hours prior Signup and view all the answers

What is not an accessory organ of the digestive system?

spleen Signup and view all the answers

Greatest advantage of digital imaging?

contrast resolution Signup and view all the answers

Myelography should ONLY be done with what type of media?

nonionic contrast media Signup and view all the answers

Roentgen applies to?

x-rays and gamma rays Signup and view all the answers

Which would be an advantage of the air gap technique?

less radiation to the patient Signup and view all the answers

What is the main reason most people die during hematopoietic death?

immune system is destroyed Signup and view all the answers

Asepsis means?

free from infection Signup and view all the answers

Failure to collimate accurately while using AEC may result in a _____ radiograph?

underexposed Signup and view all the answers

Automatic rescaling means the values of interest that were determined by the histogram are used to produce digital images with the proper: (Select one)

Brightness Signup and view all the answers

What is the socket that holds the head of the femur?

acetabulum Signup and view all the answers

Which of the following would best demonstrate the rectum filled with barium?

lateral Signup and view all the answers

IR must be overexposed ______ in order to produce saturation?

4X Signup and view all the answers

Only safe solution to clean PSP's is?

anhydrous ethyl alcohol Signup and view all the answers

A patient restraint?

is typically in use before the patient gets to radiology. Signup and view all the answers

Fluoroscopy units cannot exceed how many R/min according to the NCRP?

10 R/min Signup and view all the answers

Most common site for measuring pulse?

radial artery Signup and view all the answers

After BE, you notice the sheets have fecal matter and blood on them, what should be done with the sheets?

place in leak proof linen bag Signup and view all the answers

A patient in the first stages of shock will display?

increases respiration, anxiety levels increase, skin is cold and clammy Signup and view all the answers

Field positioning light and the actual radiation field cannot vary by more than what % of SID?

2% Signup and view all the answers

Which of the following positions/projections best demonstrates the esophagus filled with barium?

35 degree RAO Signup and view all the answers

A flat panel detector is exposed with nothing between the tube and detector. The pixel reading of 5 different ROI across the detector are averaged and compared - what quality control test was performed?

uniformity Signup and view all the answers

Cycles per second or hertz is the unit of measurement for?

frequency Signup and view all the answers

What is it called when part of the patient's bronchial tree is blocked, causing a partial collapse?

atelectasis Signup and view all the answers

How much should the patient be rotated for an RPO position during IVU?

30 Signup and view all the answers

Which of the following is not a beam-restricting device? (Select one)

Filter Signup and view all the answers

Which of the following long-term effects to ionizing radiation is considered the most common?

leukemia Signup and view all the answers

What is the most effective means of protection?

distance Signup and view all the answers

DICOM grayscale standard display function?

assures digital images will work the same on various display monitors Signup and view all the answers

2 general cells in the human body?

Somatic Signup and view all the answers

Which will demonstrate the right sternoclavicular joint?

10-15 degrees RAO Signup and view all the answers

A lateral projection of the T spine requires a breathing technique of at least how many seconds?

3 Signup and view all the answers

Which of the following will best demonstrate the right sternoclavicular joint?

10-15 degree RAO Signup and view all the answers

Which of the following would increase the signal to noise ratio?

increase in x-ray intensity Signup and view all the answers

To prevent shape distortion, which of the two elements must be parallel?

the object and the image receptor Signup and view all the answers

The congressional federal register requires the exposure switch for a fluoroscopic unit must be a deadman type. What does the deadman switch require?

continuous pressure Signup and view all the answers

What is the name of the imaginary line drawn between the outer canthus and the EAM?

orbitomeatal line Signup and view all the answers

If the SID is 40 and the OID is 8, what is the magnification factor?

1.25 Signup and view all the answers

Non-ionic, water-soluble iodinated contrast media?

does not dissolve into charged particles Signup and view all the answers

Which of the following positions is used to demonstrate foreign bodies in the hand?

lateral in extension Signup and view all the answers

The margin of error a radiographer has in setting his/her technical factors and still obtaining a diagnostic quality image is known as what? (Select one)

Exposure latitude Signup and view all the answers

AP weight-bearing knees are ordered to demonstrate which of the following pathologies?

arthritis Signup and view all the answers

If a digital imaging system can record 10 lines per millimeter, what is its spatial resolution?

5 lp/mm Signup and view all the answers

To demonstrate the greater tubercle of the humerus, which of the following would be correct?

supinate the hand Signup and view all the answers

Which of the following are best demonstrated in the oblique position of the lumbar spine?

zygapophyseal joints Signup and view all the answers

A patient suddenly has difficulty breathing; what is the first thing a radiographer must do?

call for help Signup and view all the answers

Where should the CR be located for an AP projection of the shoulder joint?

coracoid process Signup and view all the answers

Where should the central ray be directed for an AP projection of the knee joint?

1 cm distal to the apex of the patella Signup and view all the answers

Medications include which of the following? (Select all that apply)

Diuretics Signup and view all the answers

Which of the controls on the control panel adjusts the autotransformer?

KVP control Signup and view all the answers

Where should the CR enter for an AP projection during an operative cholangiogram?

where the surgeon indicates Signup and view all the answers

Which of the following devices is designed to attenuate all secondary radiation originating under the table during fluoroscopy?

bucky slot cover Signup and view all the answers

The term intrathecal refers to an injection into which of the following anatomical areas? (Select one)

Spinal canal Signup and view all the answers

Which of the following publications represents limits of exposure to ionizing radiation?

NCRP #116 Signup and view all the answers

Which of the following positions/projections will best demonstrate the distal tibfib joint?

45 degree medial oblique Signup and view all the answers

To reduce the risk of causing leukemia, which of the following anatomical parts should be shielded from radiation exposure whenever possible?

bone marrow Signup and view all the answers

Which of the following positions used to demonstrate the sternum?

RAO Signup and view all the answers

Beam filtration of 2.5 mm Al equivalent reduces the skin entrance dose by how much?

75% Signup and view all the answers

With digital imaging, radiographers can avoid the possibility of repeats by overexposure to the patient. This practice is referred to as?

exposure creep Signup and view all the answers

A dose of whole body radiation that will kill 50% of the exposed individuals within 60 days is referred to as: (Select one)

LD50/60 Signup and view all the answers

Which of the following types of primary radiation cannot be produced at tube potentials less than 70 keV?

characteristic Signup and view all the answers

Tissue is more sensitive to radiation when irradiated under which of the following conditions?

aerobic (well oxygenated) Signup and view all the answers

Which of the following should be done to reduce OID on a PA projection of the wrist?

flex fingers slightly Signup and view all the answers

Which of the following is a post-processing option to decrease the amount of noise in a digital image?

smoothing Signup and view all the answers

The 4th cervical vertebra lies at the level of which of the following topographical landmarks?

thyroid cartilage Signup and view all the answers

Fuji's cassette-based system uses a sensitivity (S) number to determine if the proper exposure was received by the imaging plate. If 200 is the ideal number, what number would indicate the plate was exposed to twice the necessary radiation? (Select one)

100 Signup and view all the answers

Which of the following helps prevent oxidation of the developer?

preservative Signup and view all the answers

Which of the following is not a fundamental property of the x-ray beam?

is negatively charged Signup and view all the answers

While using a C-arm, fluoroscopic unit, which of the following will reduce radiation exposure to the patient the most? (Select one)

Placing the image intensification tube as close to the patient as possible Signup and view all the answers

Which of the following refers to the quality of the x-ray beam?

the energy of the x-ray beam Signup and view all the answers

Patients from different cultural groups may have different?

attitudes towards health and illness, language skills, and responses to being imaged by someone of the opposite gender Signup and view all the answers

The distal end of an endotracheal tube should be placed ______ superior to the carina?

5 cm Signup and view all the answers

Which of the following definitions describes the effective dose limit?

a dose that is not expected to produce significant effects Signup and view all the answers

What is the rounded process on the proximal lateral aspect of the femur called?

greater trochanter Signup and view all the answers

For the lateral position of the L5-S1 junction, the CR enters on the MCP at a point?

1 1/2 inferior to iliac crest Signup and view all the answers

Study Notes

Computed Radiography

Cassettes should be erased after 48 hours of non-use to maintain image quality.

Myelography

After myelography, a patient may be taken for a CT scan for further studies.

Digital Imaging

Digit '0' appears as white on digital receptor monitors.
The greatest disadvantage of digital imaging is its limited spatial resolution, particularly in recording small objects.

Imaging Techniques

A scapular Y position visualizes anterior or posterior dislocations of the humerus.
To determine separation of AC joints, an upright patient holding weights is necessary.
For upper airways, a slow, deep inspiration is required in AP and lateral positioning.

Radiologic Physics

Scatter radiation primarily affects image contrast by fogging the image.
Increasing the grid ratio leads to a proportional increase in patient dose and a decrease in receptor exposure.

Infection Control

Poor health is a major factor in hospital-acquired infections, highlighting the need for careful patient monitoring.

Grid and Exposure

Visible grid lines on a radiograph occur if a bucky device is not selected.
CR imaging plates in busy departments should be cleared monthly to avoid image degradation.

Radiation Safety

Exposure from a barium enema (BE) is approximately 10 mSv.
The NCRP limits fluoroscopy units to a maximum of 10 R/minute to ensure patient safety.
Effective radiation protection strategies include distance, proper shielding, and beam filtration.

Patient Care and Procedures

Direct pressure is the most effective method for stopping bleeding.
Debilitated patients, including the elderly and children, should be prioritized for procedures requiring fasting and laxatives.

Anatomy and Positioning

The socket for the femur head is known as the acetabulum; the proximal end of the fibula is termed the apex.
The greater tubercle of the humerus is best demonstrated with the hand in a supinated position.

Quality Control in Radiography

Uniformity in digital detectors is evaluated by comparing pixel readings across different regions.
Exposure latitude defines the margin of error acceptable for obtaining diagnostic-quality images.

Patient Interaction

Differences in attitudes towards health, illness, and language skills should be considered when interacting with patients from various cultural backgrounds.

Miscellaneous

The distal end of an endotracheal tube should be placed 5 cm superior to the carina for proper positioning.
Leukemia is the most common long-term effect of ionizing radiation exposure.

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Test your knowledge of key terms and concepts in computed radiography with these flashcards. Each card presents a critical question regarding radiology practices and definitions. Perfect for students and professionals looking to reinforce their understanding in the field.