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Digital Radiography
Digital Radiography: An Introduction Chapter 2
Question | Answer |
---|---|
The _____ _____ converts a function in the time domain to a function in the frequency domain. | Fourier transform |
In ______ compression, there is no loss of information in the image. | lossless |
In _____ compression there is some loss of image details when the image is decompressed. | lossy |
A digital image is made up of a 2D array of numbers called a ____. | matrix |
Picture elements | Pixels |
Pixel size=_________________ | FOV/Matrix Size |
The larger the matrix size, the ______ the pixel size. | smaller |
The number of bits per pixel is __ ____. | bit depth |
As the FOV decreases without a change in matrix size, the size of the pixels ________. | decreases |
Changing the histogram of the image to alter the brightness and/or contrast of the image | Histogram stretching/modification |
The center of the range of numbers in a digital image | Window level |
The range of numbers in a digital image | Window width |
The widow width controls the image _____. | contrast |
The window level controls the _______ of the image. | brightness |
A _____ image is a numerical representation of the patient. | digital |