Search results
Results from the WOW.Com Content Network
Scintigraphy (from Latin scintilla, "spark"), also known as a gamma scan, is a diagnostic test in nuclear medicine, where radioisotopes attached to drugs that travel to a specific organ or tissue (radiopharmaceuticals) are taken internally and the emitted gamma radiation is captured by gamma cameras, which are external detectors that form two-dimensional images [1] in a process similar to the ...
Gamma correction or gamma is a nonlinear operation used to encode and decode luminance or tristimulus values in video or still image systems. [1] Gamma correction is, in the simplest cases, defined by the following power-law expression: =,
Single-photon emission computed tomography (SPECT, or less commonly, SPET) is a nuclear medicine tomographic imaging technique using gamma rays. [1] It is very similar to conventional nuclear medicine planar imaging using a gamma camera (that is, scintigraphy ), [ 2 ] but is able to provide true 3D information.
A gamma camera (γ-camera), also called a scintillation camera or Anger camera, is a device used to image gamma radiation emitting radioisotopes, a technique known as scintigraphy. The applications of scintigraphy include early drug development and nuclear medical imaging to view and analyse images of the human body or the distribution of ...
The telerecording film chain can be arranged to produce a direct negative-image film recording, a direct positive-image film recording, or a positive print can be made from the negative. In the first two cases we have the following four units in which local gamma or effective image contrast may be adjusted: The recording channel amplifier.
Gamma-ray emission tomography ("Tomographic Gamma Scanning") Gamma ray: TGS or ECT Gamma-ray transmission tomography: Gamma ray: TCT Hydraulic tomography: fluid flow: HT 2000 Infrared microtomographic imaging [10] Mid-infrared: 2013 Laser Ablation Tomography: Laser ablation & fluorescent microscopy: LAT 2013 Magnetic induction tomography ...
If many gamma rays are present in a spectrum, Compton distributions can present analysis challenges. To reduce gamma rays, an anticoincidence shield can be used—see Compton suppression. Gamma ray reduction techniques are especially useful for small lithium-doped germanium (Ge(Li)) detectors. Figure 2: Sodium iodide gamma spectrum of cobalt-60 ...
Particle-induced gamma-ray emission (PIGE) spectroscopy is a form of nuclear reaction analysis, one of the ion beam analysis thin-film analytical techniques.