Nuclear Medicine: Image Digitization and Display

Flashcards covering key concepts related to image digitization and display in nuclear medicine, focusing on pixel dimensions, image processing techniques, and resolution.

Image Matrix

A rectangular arrangement of pixels utilized in digital imaging, indicating the dimensions used in nuclear medicine.

Pixel Size

The dimensions of individual pixels within an image matrix, which directly affect image resolution and quality.

FOV (Field of View)

The extent of the observable world that can be captured in an image, often measured in centimeters.

Gray Scale

A range of shades from black to white used to represent intensity levels in an image.

Counts per Pixel

The number of detected events or signals captured by a pixel in a digital image.

Smoothing

The process used in image processing to reduce noise and enhance important features.

Contrast Enhancement

A technique used to improve the visibility of features in images by adjusting the difference in luminance or color.

Background Subtraction

A method in image processing for separating foreground from background elements.

Coefficient of Variation (CV)

A statistical measure of the relative variability of pixel counts, expressed as a percentage.

Sampling Theorem

A principle stating that a signal must be sampled at a rate higher than twice its highest frequency to accurately reconstruct the signal.

Resolution

The ability of an imaging system to distinguish between two closely spaced objects, often measured in millimeters.