Row 1
The front of the imaging plate is made of:
What is the name of the computer software function that allows adjustment of the radiographic image after it has been processed?
Postprocessing
Which control on the viewing station controls the density, or brightness, in the radiographic image?
Window level
What artifact will be shown in the radiographic image if there is inadequate exposure technique?
Quantum Mottle
The ability to distinguish anatomical structures of similar subject contrast is termed:
Contrast Resolution
CR systems acquire clinical information by:
laser scanning a PSP plate
"Window Width" controls which aspect of the radiographic image?
Contrast
The amount of detail or sharpness in the digital image is termed:
Spatial resolution
Which of the following will be seen in the x-ray image if either the kVp or the mA is set too low for the projection?
Greater brightness
High signal-to-noise ratio
Low-contrast resolution
Quantum Mottle
Quantum Mottle
Resolution is controlled by _______ size.
Pixel
One of the most important aspects of setting the exposure factors when using digital systems is to ensure that the:
When a CR plate is inserted into the reader for processing, the phosphor is scanned with a:
Laser beam
The greatest spatial resolution will be produced when the matrix is ______ and the pixels are ______
Large, small
When using DR systems, indirect conversion of x-ray energy requires how many steps?
Two
What should never be placed on the radiographic image using electronic means (computer software)?
R and L markers
What is the size of the flat-panel detector inside the table of a DR system?
17' 17 inches
What is the name of the technique in which each pixel's frequency is averaged with the surrounding tissues' pixel values in an effort to reduce noise in the image?
Smoothing
What takes the stored charge in the flat-panel detector and converts it into a digital value?
Analog-to-digital converter (ADC)
The ability of the digital system to convert the x-ray input electric signal into a useful radiographic image is termed:
Signal-to=noise ratio (SNR)
What is important to use when using digital systems for mobile radiography?
Grid
Barium fluorohalide with europium is used:
As the phosphor that absorbs the x-ray energy in the imaging plate.
This occurs when there may be a defect in a component of the computer screen matrix that may cause a loss of patient information:
Dead pixels
What is the weakest link in the digital imaging chain?
Viewing monitor
Each square picture element in a digital viewing monitor is called a:
Pixel
One of the main advantages of using CR and DR digital systems is:
The ability to process images very fast.