Image detection

By image detection we mean the recording of the surface or spatial distribution of certain physical parameters of the displayed scene and the conversion of this image function into another form of signal (e.g. an electrical signal), which has more favorable properties for further processing, display and storage. Image detectors (sensors) ensure the recording and transformation of the image signal. It is usually a two-dimensional array of a large number of suitable detection elements (transducers), which, in addition to the values ​​of the displayed parameters of the scene, also provide spatial information about the exact location of the signal. Each detection element of the sensor records one image point (pixel) of the resulting image. For tomografic methods is the result of the detection of the so-called voxel (from the English Volumetric Pixel) – volumetric element of the image. In medicine, there are a number of commonly imaged scene parameters that can be recorded in a variety of ways.