What is a pixel in radiography?

Pixel. A pixel (or pel or picture element) may refer to either the smallest discrete element of the physical display or to the smallest element of the image. Voxel is its 3-dimensional equivalent, as employed in CT and other cross-sectional imaging modalities.Click to see full answer. In this regard, what is a matrix in radiography?Matrix. A matrix is a square arrangement of numbers in columns and rows, and in digital imaging, the numbers correspond to discrete pixel values. For example, if you have a 10 × 12 and a 14 × 17 computed radiography (CR) cassette and both have a 512 × 512 matrix, then the 10 × 12 cassette will have smaller pixels.One may also ask, what is bit depth in radiography? BIT DEPTH is determined by the number of bits used to define each pixel. The greater the bit depth, the greater the number of tones (grayscale or color) that can be represented. Digital images may be produced in black and white (bitonal), grayscale, or color. In this way, what is resolution in radiology? Contrast resolution in radiology refers to the ability of any imaging modality to distinguish between differences in image intensity. The inherent contrast resolution of a digital image is given by the number of possible pixel values, and is defined as the number of bits per pixel value.How does pixel size affect spatial resolution?”Spatial resolution refers to the size of the smallest object that can be resolved on the ground. In a digital image, the resolution is limited by the pixel size, i.e. the smallest resolvable object cannot be smaller than the pixel size.