Term
DQE, and therefore patient dose, is determined principally by the _______ _______ of the detector.
a. Atomic Number
b. Atomic Weight
c. Pixel Size
d. Fill Factor |
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Definition
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Term
The spatial resolution of a CCD is determined by its:
a. Physical Size
b. Number of Pixels
c. a & b
d. None of the above |
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Definition
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Term
Which statement below generally characterizes the influence of matrix size on image quality?
a. Matrix size has little influence on image quality
b. The larger the matrix, the sharper the image
c. The larger the matrix, the more noise the image contains
d. The smaller the matrix, the sharper the image |
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Definition
| b. The larger the matrix, the sharper the image |
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Term
When a CR plate is exposed to a laser, it emits light. This phenomenon is called:
a. Photostimulable Phosphorescence
b. Light Emission
c. Photostimulable Luminescence
d. Electron Stimulation |
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Definition
| c. Photostimulable Luminescence |
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Term
Who was the American statistician who developed a mechanical tabulator based on punched cards to rapidly tabulate statistics from thousands and millions of census data?
a. Thomas Edison
b. Herman Hollerith
c. George Pentium
d. Charles Babbage |
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Definition
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Term
If the digital image recorded on most digital x-ray systems could be displayed directly, it would demonstrate:
a. High density
b. A high degree of contrast
c. A long scale of contrast
d. Increased contrast resolution |
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Definition
| c. A long scale of contrast |
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Term
What is the first step in digital imaging?
a. Positioning the patient
b. Determining the image matrix
c. Capturing the x-ray energy and transforming it into electrical signals
d. Transforming the latent digital image into a manifest analog image that can be viewed by the human eye |
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Definition
| c. Capturing the x-ray energy and transforming it into electrical signals |
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Term
Which image enhancement modifies the gray scale rendition of the image, and therefore image contrast?
a. Leveling
b. Window Width
c. Windowing and Leveling
d. Subtraction |
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Definition
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