Medical Image Data

A digital image is made up a two dimensional array of numbers

Matrix consist of columns (M) and rows (N) that define small square region is called?

Increase of number of pixel

Decrease number of pixels

Increase size of pixel

Decrease size of pixel

The amount of body part or patient included in the image

The larger, more area is imaged

Is the smallest element in a digital image

Is directly related to the amount of spatial resolution or detail in the image

1000 or more shades of gray, can adjust to have a good and better result

It uses only 30 shades of gray.

The number of bits within the pixels

It has 10 to 16 bit depths resulting in more shades of gray

Refers to its appearance on the display monitor of the computer

Is a function of the monitors ability to emit light through the surface of the display

The ability of the digital system to display subtle changes in the shade of gray

The ability of the imaging system to demonstrate small details of an object

Contributes no useful diagnostic information and serves only to detract from the quality of the image

Is visible as brightness or density fluctuations on the images

The fewer the photons reaching the IR to form the image, the greater is the visible on the digital image

Grainy or sandy-like appearance

Ability to respond to varying levels of exposure, more tissue densities on the digital image are seen, giving the appearance of more detail.

The range of exposure diagnostic image values the image detector is able to produce