Chapter 13 Contrast

Explain the importance of radiographic contrast to image quality

 The radiograph must exhibit differences in the brightness levels or densities (image contrast) in order to differentiate among the anatomic tissues
Gray scale is

 number of different shades of gray that can be stored and displayed in a digital image or film
Scale of contrast

 the range of densities visible on film or digital image
High Kvp=
____ Scale
____ Contrast
____ Contrast
- Long scare
- Low contrast
- Less Contrast
Contrast resolution .

 Describes an imaging receptor's ability to distinguish between objects similar in subject contrast
Spatial resolution

 refers to the smallest object that can be imaged.
Recorded detail

 refers to the distinctness or sharpness of the structural lines that make up the recorded film image.
the faster the film screen speed

decrease in resolution
Brightness is the monitor term for

Density
Matrix

 combination of rows and columns
Pixel

 "picture elements" or smallest component of matrix

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Chapter 13 Contrast

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Updated

2013-10-30T19:32:37Z