| scintillator |
A scintillator is a device or substance that absorbs high energy (ionizing) electromagnetic or charged particle radiation then, in response, fluoresces photons at a characteristic Stokes-shifted (longer) wavelength, releasing the previously absorbed energy. See also scintillation. Scintillators are defined by their short fluorescence decay times and optical transparency at wavelengths of their own specific emission energy, characteristics which set them apart from phosphors. ...
출처: en.wikipedia.org/wiki/Scintillator
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| scintigraphy |
Nuclear medicine is the branch of medicine that uses unsealed radioactive substances in diagnosis and therapy. These substances consist of radioisotopes or pharmaceuticals labelled with radioisotopes (radiopharmaceuticals). In diagnosis, radioactive substances are administered to patients and the radiation emitted is measured. The majority of these diagnostic tests involve the formation of an image using a gamma camera. ...
출처: en.wikipedia.org/wiki/Scintigraphy
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| scintillation counter |
A scintillation counter measures ionizing radiation. The sensor, called a scintillator, consists of a transparent crystal, plastic (usually containing anthracene), or organic liquid (see liquid scintillation counting) that fluoresces when struck by ionizing radiation. A sensitive photomultiplier tube measures the light from the crystal. ...
출처: en.wikipedia.org/wiki/Scintillation_counter
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| scintimammography |
A type of breast imaging test that is used to detect cancer cells in the breasts of some women who have had abnormal mammograms, or who have dense breast tissue. Scintimammography is not used for screening, or in place of a mammogram. In this test, a woman receives an injection of a small amount of a radioactive substance called technetium 99, which is taken up by cancer cells, and a gamma camera is used to take pictures of the breasts. Also called Miraluma test and sestamibi breast imaging.
출처: www.stjude.org/glossary
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| scintillation |
Scintillation is the twinkling of stars (fluctuation of intensity) seen through a planet's atmosphere. Scintillation in caused when the star's light is distorted by the Earth's atmosphere. Scintillation is greater for bright stars that are low on the horizon. It is also known as astronomical scintillation. SCORPIUS [Abbreviation: Sco] Scorpius (the scorpion) is a constellation of the zodiac. This constellation is seen along the ecliptic between Libra and Sagittarius. ...
출처: www.enchantedlearning.com/subjects/astronomy/gloss...
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