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RADT 2403 Chapter 10 Test

Enter the letter for the matching Answer
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1.
Recalling a digital image adjusts the histogram to reflect which of the following?
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2.
In direct radiography system, a charge-coupled device is used to:
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3.
What represents the latent image in a PSP CR system?
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4.
Which of the following does not involve the conversion of x-rays to light rays?
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5.
A device that would be found on a direct exposure system as an exposure indicator is a:
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6.
If the phosphor layer in a CR system is considered turbid, this means that:
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7.
The component of a flat panel detector that is responsible for absorbing the electrons and generating the subsequent electrical charges to the image processor is the:
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8.
The emission of light by a phosphor, when exposed to a laser, is known as
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9.
Which component of the CR reader digitizes the signal and is needed to allow computer processing of an analog signal?
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10.
The function of a thin-film transistor in an indirect DR system is to:
A.
electrons trapped in the conduction band
B.
direct capture DR system
C.
thin-film transistor (TFT)
D.
it is randomly arranged across a support layer
E.
serve as a switch that allows a capacitor to collect charge during exposure
F.
VOI
G.
photostimulable luminescence
H.
ADC
I.
detect and convert light photons to a digital signal
J.
dose-area product (DAP) meter
Type the Answer that corresponds to the displayed Question.
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11.
Which of the following is used by both forms of indirect cassetteless systems?
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12.
The purpose of europium in the photostimulable phosphor is to
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13.
What is the test pattern used for?
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14.
Which of the following controls brightness of a digital system?
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15.
In direct capture (indirect digital imaging), the scintillation device is commonly composed of:
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16.
The Hurter and Driffield (H & D) curve for digital imaging is linear rather than s-shaped because:
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17.
PAC's primary use is to:
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18.
Which PACS storage option offers the fastest retrieval of data?
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19.
The active layer in the photostimulable phosphor of a CR imaging plate is typically made of:
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20.
Direct radiography eliminates the need for the ____ because the image is captured by multiple sensors that create an image signal immediately?

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