1
Physics study guide 160 Questions with
Answers (100% Correct Answers)
The overall quality of the radiographic image is determined by:
- accuracy of structural lines.
-all of these
-visibility of anatomic structures.
-sharpness. Answer: All of these
The amount of light emitted from the display monitor is:
-noise.
-contrast resolution.
-brightness
-spatial resolution. Answer: Brightness
Who evaluates the overall brightness on the image to determine if it is sufficient
to visualize the anatomic area of interest?:
-Supervisor
-Patient
-Radiographer
-Radiologist Answer: Radiographer
The midpoint of the range of brightness levels visible on the digital image is
determined by:
-window width
,2
-window pane
-all of these
-window level Answer: Window level
Which of the following refers to the absorption characteristics of the anatomic
tissues radiographed and the quality of the x-ray beam?:
-subject contrast
-grayscale
-brightness levels
-differential absorption Answer: Subject contrast
Radiographic contrast:
-allows visibility of anatomic structures.
-improves the magnification of the image.
-produces sharper structural lines in the image.
-produces sharper structural lines in the image and allows visibility of anatomic
structures. Answer: Allows visibility of anatomic structures
A radiographic image that has brightness levels that are very different from
each other:
-has low contrast and has long-scale contrast.
-has high contrast.
-has long-scale contrast.
-has low contrast. Answer: Has high contrast
, 3
What digital characteristics affects the number of shades of gray available for
image display?:
-pixel bit depth
-pixel pitch
-pixel density
-pixel size Answer: Pixel bit depth
Making the digital image appear with high contrast, more black and white, is
done by:
-raising the window level.
-decreasing the window width (narrow WW).
-lowering the window level
-increasing the window width (wide WW). Answer: Decreasing the window
width (narrow WW)
The number of pixels per unit area is:
-pixel density.
-grayscale.
-contrast resolution.
-pixel pitch. Answer: Pixel density
Spatial resolution can be increased by:1. Increasing the pixel pitch2. Increasing
the pixel density3. Decreasing the pixel pitch:
-Increasing the pixel pitch and increasing the pixel density only.
-Increasing the pixel pitch, increasing the pixel density, and decreasing the pixel
pitch.
Physics study guide 160 Questions with
Answers (100% Correct Answers)
The overall quality of the radiographic image is determined by:
- accuracy of structural lines.
-all of these
-visibility of anatomic structures.
-sharpness. Answer: All of these
The amount of light emitted from the display monitor is:
-noise.
-contrast resolution.
-brightness
-spatial resolution. Answer: Brightness
Who evaluates the overall brightness on the image to determine if it is sufficient
to visualize the anatomic area of interest?:
-Supervisor
-Patient
-Radiographer
-Radiologist Answer: Radiographer
The midpoint of the range of brightness levels visible on the digital image is
determined by:
-window width
,2
-window pane
-all of these
-window level Answer: Window level
Which of the following refers to the absorption characteristics of the anatomic
tissues radiographed and the quality of the x-ray beam?:
-subject contrast
-grayscale
-brightness levels
-differential absorption Answer: Subject contrast
Radiographic contrast:
-allows visibility of anatomic structures.
-improves the magnification of the image.
-produces sharper structural lines in the image.
-produces sharper structural lines in the image and allows visibility of anatomic
structures. Answer: Allows visibility of anatomic structures
A radiographic image that has brightness levels that are very different from
each other:
-has low contrast and has long-scale contrast.
-has high contrast.
-has long-scale contrast.
-has low contrast. Answer: Has high contrast
, 3
What digital characteristics affects the number of shades of gray available for
image display?:
-pixel bit depth
-pixel pitch
-pixel density
-pixel size Answer: Pixel bit depth
Making the digital image appear with high contrast, more black and white, is
done by:
-raising the window level.
-decreasing the window width (narrow WW).
-lowering the window level
-increasing the window width (wide WW). Answer: Decreasing the window
width (narrow WW)
The number of pixels per unit area is:
-pixel density.
-grayscale.
-contrast resolution.
-pixel pitch. Answer: Pixel density
Spatial resolution can be increased by:1. Increasing the pixel pitch2. Increasing
the pixel density3. Decreasing the pixel pitch:
-Increasing the pixel pitch and increasing the pixel density only.
-Increasing the pixel pitch, increasing the pixel density, and decreasing the pixel
pitch.
