If the phosphor layer in a CR system is considered turbid, this means that:

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RADT 2403 Chapter 10

Question	Answer
What represents the latent image in a PSP CR system?	electrons trapped in the conduction band
Which PACS storage option offers the fastest retrieval of data?	online
Which of the following controls brightness of a digital system?	display monitor
Recalling a digital image adjusts the histogram to reflect which of the following?	VOI
Which of the following is used by both forms of indirect cassetteless systems?	scinillator
Which of the following does not involve the conversion of x-rays to light rays?	direct capture DR system
Which component of the CR reader digitizes the signal and is needed to allow computer processing of an analog signal?	ADC
What is the test pattern used for?	resolution
The emission of light by a phosphor, when exposed to a laser, is known as	photostimulable luminescence
PAC's primary use is to:	store digital images
The Hurter and Driffield (H & D) curve for digital imaging is linear rather than s-shaped because:	wider dynamic range
The active layer in the photostimulable phosphor of a CR imaging plate is typically made of:	barium fuorohalide
The purpose of europium in the photostimulable phosphor is to	trap metastable electrons
If the phosphor layer in a CR system is considered turbid, this means that:	it is randomly arranged across a support layer
Direct radiography eliminates the need for the ____ because the image is captured by multiple sensors that create an image signal immediately?	image receptor cassette
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:	thin-film transistor (TFT)
In direct radiography system, a charge-coupled device is used to:	detect and convert light photons to a digital signal
In direct capture (indirect digital imaging), the scintillation device is commonly composed of:	cesium iodide
The function of a thin-film transistor in an indirect DR system is to:	serve as a switch that allows a capacitor to collect charge during exposure
A device that would be found on a direct exposure system as an exposure indicator is a:	dose-area product (DAP) meter

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