An imaging plate is used in computed radiography (CR) instead of a conventional film cassette.
The imaging plate is coated with photostimulable phosphors. The phosphor layer is doped with special substances to alter the crystalline structure and physical properties. After radiation, the enhanced phosphor material absorbs and stores x-ray energy in gaps of the crystal structure, building a latent image.
Usually, the storage phosphors are stimulated with a low-energy laser to release visible light at each point of x-ray absorption. To read-out the image, the plate is inserted into a computed radiography scanner. The scanning laser beam causes the electrons to relax to lower energy levels, emitting light that is captured by a photo-multiplier tube and converted into an electrical signal. The electronic signal is then converted to digital data and can be displayed on laser-printed films, workstations, transmitted to remote systems, and stored digitally.
The CR units automatically erase the image plate after the complete scan. Phosphor imaging plates, like film, are stored in cassette format and can be re-used very often if they are handled carefully. Existing conventional x-ray equipment, from generators to x-ray tubes and examination systems, can be used with imaging plates.

Adjusting the electrical impedance of two circuits that are to be joined at an interface so that they are equal, e.g. with a matching network.

An implanted port is a container connected to a catheter (a small plastic flexible tube) that is surgically placed just below the skin. The catheter is inserted into a large vein or artery directly into the bloodstream. A port will be an advantage during treatment. Fluids, drugs, or blood products can be infused or blood drawn through a needle that is stuck into the disk.

Examination of material in an artificial environment, for example radioimmunoassay in a test tube.

Imaging, functional and metabolic examinations within the living body.