COMMUTED COMPUTER PROCESSING IN RADIOGRAPHY

These flashcards cover the key vocabulary and concepts related to computed computer processing in radiography.

Digital Image

An image that has been converted into numerical values for transmission or processing.

Matrix

A series of boxes in rows and columns that give form to the image.

Pixel

An individual matrix box, also known as a picture element, that represents a range of different shades of gray.

Grayscale Bit Depth

The number of shades of gray that can be represented in an image.

Computed Radiography (CR)

A system that uses an imaging plate inside a cassette for capturing images.

Digital Radiography (DR)

An imaging system that uses detectors and readers as permanent parts of the setup without needing a cassette.

Point Processing

An image processing operation that changes the input values of pixels to improve image quality.

Latent Image

An image that is formed at the europium phosphor sites and can lose energy over time if not processed.

ID Reader Device (IRD)

A device that scans the plate with a helium-neon laser to read the stored latent image.

Histogram Analysis

A process that recognizes clinically useful areas of an image for manipulation, eliminating irrelevant data.

LUT (Look-Up Table)

A table used in image processing to adjust contrast and stabilize image density for different body parts.

Quantum Mottle

A phenomenon of image noise caused by insufficient mAs settings, resulting in images that display poor quality.

Fill Factor

The percentage of a pixel that is sensitive to x-ray detection compared to the non-sensitive area.

Digital Image Quality Factors

Factors such as resolution, noise, and DQE that determine the quality of digital images.

Sampling Frequency

The rate at which a laser scans the imaging plate, which affects pixel pitch and resolution.