Del Medical EPEX Omniflex IV, Service Manual

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EPEX/Omniflex IV System Service Manual
Glossary GL-3
Collimator Regulates the size and shape of the X-ray beam to accurately localize the
area of interest on the patient, while reducing overall patient irradiation
exposure.
Compton Scattering Name for almost all of the scatter radiation encountered in diagnostic
radiology.
Computed Radiography
(CR) The digital generation of X-ray energy using storage phosphors.
Cone Cone-shaped device placed between the X-ray tube and the patient to
limit the beam of primary radiation striking the part, thus reducing the
amount of secondary radiation that is formed.
Contrast Media An opaque substance used to provide visual contrast in the images of
tissues and organs.
CPU Central Processing Unit of the DirectRay Console.
Crystallography Experimental technique that exploits the fact that X-rays are diffracted
by crystals.
Cycle Time Total elapsed time from when an X-ray image is captured until another
X-ray image can be captured by a digital detector.
Data Compression A method of reducing required data storage capacity by storing data in
encoded form. Various encoding methods are used to eliminate gaps,
empty fields, and redundancies to shorten the length of records.
Density The degree of blackness on a radiograph.
Detail Relative sharpness of the internal structures of a body as they are
demonstrated on a radiograph.
Detective Quantum
Efficiency (DQE) Method for measuring image quality.
Detector Element Detector element in an image capture device. Sometimes called the
Dexel. There are 7.8 million of these in a DirectRay Detector.
Detent A device for positioning and holding an articulated mechanism in
relation to another so that the device can be released by force applied to
one of the parts.
Diagnostic X-ray System An X-ray system designed for irradiation of any part of the human body
for the purpose of diagnosis or visualization.
DICOM Digital Imaging and Communications in Medicine
Digital Imaging and
Communications in
Medicine (DICOM) An medical industry standard specification for interconnection of
medical imaging equipment.