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Etymologie

Was (wer) ist SPECT scan - definition

NUCLEAR MEDICINE TOMOGRAPHIC IMAGING TECHNIQUE

SPECT; Single Photon Emission Computed Tomography; Radionuclide computed tomography; SPECT scan; SPET; Tomography, emission-computed, single-photon; Single photon emission computed tomography; SPECT/CT; Spect imaging; SPECT of brain; Single-photon emission-computed tomography; SPECT imaging

Spet

·noun Spittle.

II. Spet ·vt To Spit; to throw out.

Graham scan

ALGORITHM FOR FINDING THE CONVEX HULL OF A SET OF POINTS IN THE PLANE

Graham Scan; Graham's scan; Graham's algorithm

Graham's scan is a method of finding the convex hull of a finite set of points in the plane with time complexity O(n log n). It is named after Ronald Graham, who published the original algorithm in 1972.

https://en.wikipedia.org/wiki/Graham_scan

Track while scan

RADAR MODE

Track-while-scan; Track While Scan; Track-While-Scan; Track-while-scan mode; Track while Scan; Search and track

The track while scan (TWS) is a mode of radar operation in which the radar allocates part of its power to tracking the target or targets while part of its power is allocated to scanning, unlike the straight tracking mode, when the radar directs all its power to tracking the acquired targets. In the TWS mode the radar has a possibility to acquire additional targets as well as providing an overall view of the airspace and helping maintain better situational awareness.

https://en.wikipedia.org/wiki/Track_while_scan

Wikipedia

Single-photon emission computed tomography

Single-photon emission computed tomography (SPECT, or less commonly, SPET) is a nuclear medicine tomographic imaging technique using gamma rays. It is very similar to conventional nuclear medicine planar imaging using a gamma camera (that is, scintigraphy), but is able to provide true 3D information. This information is typically presented as cross-sectional slices through the patient, but can be freely reformatted or manipulated as required.

The technique needs delivery of a gamma-emitting radioisotope (a radionuclide) into the patient, normally through injection into the bloodstream. On occasion, the radioisotope is a simple soluble dissolved ion, such as an isotope of gallium(III). Most of the time, though, a marker radioisotope is attached to a specific ligand to create a radioligand, whose properties bind it to certain types of tissues. This marriage allows the combination of ligand and radiopharmaceutical to be carried and bound to a place of interest in the body, where the ligand concentration is seen by a gamma camera.

https://en.wikipedia.org/wiki/Single-photon emission computed tomography