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Questions and Answers
What does the intensification factor of the screen not refer to?
What does the intensification factor of the screen not refer to?
Which factor is not contributing to producing recorded detail?
Which factor is not contributing to producing recorded detail?
The average gradient of a characteristic curve gives good indication of film which characteristic?
The average gradient of a characteristic curve gives good indication of film which characteristic?
When was X-ray discovered?
When was X-ray discovered?
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Gamma rays are characterized by which type of wavelength?
Gamma rays are characterized by which type of wavelength?
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The remnant beam carries a signal due to which phenomenon?
The remnant beam carries a signal due to which phenomenon?
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The differential absorption by tissues of varying densities is termed as what?
The differential absorption by tissues of varying densities is termed as what?
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What material is commonly used for the glass envelope that can withstand tremendous heat?
What material is commonly used for the glass envelope that can withstand tremendous heat?
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What are the factors that affect x-ray emission that are under the control of the radiographer?
What are the factors that affect x-ray emission that are under the control of the radiographer?
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What is the primary purpose of a compensating filter in radiography?
What is the primary purpose of a compensating filter in radiography?
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What is the main function of the grid in radiography?
What is the main function of the grid in radiography?
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How is grid frequency defined?
How is grid frequency defined?
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What is tube housing designed to do?
What is tube housing designed to do?
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What effect does an increase in film density have?
What effect does an increase in film density have?
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What is space charge in the context of an x-ray tube?
What is space charge in the context of an x-ray tube?
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What is generally required to produce a significant increase in image density?
What is generally required to produce a significant increase in image density?
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What is the term used for the reduction in x-ray photon intensity as it passes through material?
What is the term used for the reduction in x-ray photon intensity as it passes through material?
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Which of the following is the most common anode material used in x-ray tubes?
Which of the following is the most common anode material used in x-ray tubes?
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Which part of the x-ray tube can withstand the delivery of a greater amount of heat for a longer period?
Which part of the x-ray tube can withstand the delivery of a greater amount of heat for a longer period?
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The material used as a target in an x-ray tube is primarily made of?
The material used as a target in an x-ray tube is primarily made of?
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Which term describes the ability to distinguish between separate objects in x-ray imaging?
Which term describes the ability to distinguish between separate objects in x-ray imaging?
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What does the Bucky diaphragm help with in radiography?
What does the Bucky diaphragm help with in radiography?
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Which factor has the greatest effect on recorded detail?
Which factor has the greatest effect on recorded detail?
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Disadvantages of using low kVp technique factors include?
Disadvantages of using low kVp technique factors include?
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Which of the following will cause loss of recorded detail?
Which of the following will cause loss of recorded detail?
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The intensity of radiation varies inversely with the square of which distance?
The intensity of radiation varies inversely with the square of which distance?
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Which radiographic quality factor is described as misinterpretation of the size and shape of a structure?
Which radiographic quality factor is described as misinterpretation of the size and shape of a structure?
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Which filtration includes the collimator structures, mirror, and thin sheets of aluminum?
Which filtration includes the collimator structures, mirror, and thin sheets of aluminum?
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No practical amount of mAs can compensate for inadequate:
No practical amount of mAs can compensate for inadequate:
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When radiographing the abdomen, which of the following would decrease the production of scatter radiation?
When radiographing the abdomen, which of the following would decrease the production of scatter radiation?
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Radiographic recorded detail is directly related to:
Radiographic recorded detail is directly related to:
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Which type of grid is designed to blur grid lines?
Which type of grid is designed to blur grid lines?
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Study Notes
Intensification Factor of Screens
- Refers to the speed of the screen
- Not resolution, lag, or density
Contributing Factors in Recorded Detail
- Grid ratio
- Screen speed
- kVp
- mAs
Characteristic Curve Gradient
- Average gradient indicates film contrast
X-ray Discovery Date
- December 6, 1895
Gamma Ray Characteristics
- Short wavelength
Remnant Beam Signal
- Areas of different radiation intensities
Subject Contrast
- Result of differential absorption in tissues with varying densities and thicknesses
X-Ray Photon Quality
- Regulated by the quality of x-ray photons
X-ray Tube Envelope Material
- Pyrex glass
Coolidge Tube
- A vacuum tube allowing x-ray intensity and energy selection
X-ray Anode Material
- Aluminum (most common)
X-ray Target Material
- Tungsten steel
X-ray Tube Portion Resisting High Heat
- Rotating anode
Normal Radiographic Density
- Describes the amount of light transmitted through the radiograph (optical density)
Grid Frequency
- Number of lead strips per inch or centimeter
Solarization Exposure Effect
- Causes image reversal
Beam Restrictors
- Aperture diaphragm, cones, cylinders, collimator
Factors Affecting X-ray Emission
- Distance
Compensating Filters
- Compensate for varying densities
- Reduce low energy x-rays
- Harden the beam
- Reduce scattered x-rays
Tube Housing Purpose
- Prolong tube use
- Prevent leakage radiation
- Prevent scattered radiation
- Aid technologists in producing radiation
Grid Function
- Improves image quality by reducing scattered radiation
Increased Film Density
- Results from an increase in mAs
Detail Loss Causes
- Subject motion, mAs changes, kVp changes, subject density changes
Radiographic Quality Factor
- Can lead to misinterpretation of size, shape
Filtration Types
- Added, inherent, compensating, port
Practical Amount of mAs
- No amount can compensate for inadequate kilovoltage
Grid Blurring Purpose
- Blurring grid lines to improve image quality
Determining Grid Usage
- SID (source-image distance)
Image Quality Metrics
- Density (range of shades of gray), contrast (differences in shades of gray), resolution (ability to distinguish objects), spatial resolution
Focal Spot Size Effect on Detail
- Larger focal spot size decreases detail
X-ray Interaction with Body Parts
- Long wavelengths interact with thin body parts, producing long scale contrast
Scatter Radiation Reduction in Abdominal Radiography
- Proper collimation reduces scatter radiation
Radiographic Detail Relation
- Directly related to the spatial resolution
Object-Image Distance Effect
- Too great or too short a distance causes shape distortion
Radiographic Definition Loss Cause
- Excessive SID, high kVp
Greatest Adversary of Recorded Detail
- Unsharpness (motion)
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Description
Test your knowledge on the key concepts of X-ray physics, including the intensification factor of screens, recorded detail contributing factors, and the characteristics of gamma rays. This quiz also covers the historical discovery of X-rays and details about the X-ray tube components. Get ready to delve into the fascinating world of X-ray technology!
