You searched for:
“image”
(a radiographic technique that produces an image of a detailed cross section of bodily tissue using a narrow collimated beam of x-rays that rotates in a full arc around a patient to image the body in cross-sectional slices)
Word Entries containing the term:
“image”
An electronic detector system that has contributed to the knowledge of astronomy: This image photon counting system is a four-stage, magnetically-focused image intensifier, coupled via a lens to a plumbicon television camera tube.
A "plumbicon" is the development of the vidicon television camera tube in which the photosensitive material is lead oxide.
A "plumbicon" is a registered trademark of Philips for its Lead Oxide (PbO) target vidicons or camera tubes in which a charge-density patterns are formed by photoconduction and stored on photoconductor surfaces that are scanned by electron beams, usually of low-velocity electrons; used chiefly in industrial television cameras.
This entry is located in the following unit:
Astronomy and related astronomical terms
(page 13)
A photoelectronic instrument for enhancing or sharpening faint astronomical images: An image tube is a form of electron tube in which an image is focused onto an input photocathode.
The resulting emitted electrons are accelerated within the evacuated tube by a very high voltage.
Image intensifiers are used in many instruments; such as, cameras, spectrographs, and acquisition and guidance systems.
This entry is located in the following unit:
Astronomy and related astronomical terms
(page 13)