Canadian Medical Guide > Analytical, Diagnostic and Therapeutic Techniques and Equipment > Diagnosis > Diagnostic Techniques and Procedures > Diagnostic Imaging > Radionuclide Imaging Terms and Definitions

Radionuclide Imaging

Medical Definition:	Process whereby a radionuclide is injected or measured (through tissue) from an external source, and a display is obtained from any one of several rectilinear scanner or gamma camera systems. The image obtained from a moving detector is called a scan, while the image obtained from a stationary camera device is called a scintiphotograph.
Guide Notes:	IM general or unspecified only: prefer /radionuclide: Manual 19.7+, 19.8.62; do not use /util except by MeSH definition; myocardial imaging, myocardial perfusion imaging, myocardial perfusion scintigraphy = HEART /radionuclide only & not also here; DF: do
Also Called:	Scintiphotography

Radionuclide Imaging Categories.

	Absorptiometry, Photon - A noninvasive method for quantitating bone mineral content. It is used especially in the diagnosis of osteoporosis and also in measuring bone mineralization in infants.
	Radioimmunodetection - Use of radiolabeled antibodies for diagnostic imaging of neoplasms. Antitumor antibodies are labeled with diverse radionuclides including iodine-131, iodine-123, indium-111, or technetium-99m and injected into the patient. Images are obtained by a scintillation camera.
	Radionuclide Angiography - The measurement of visualization by radiation of any organ after a radionuclide has been injected into its blood supply. It is used to diagnose heart, liver, lung, and other diseases and to measure the function of those organs, except renography, for which RADIOISOTOPE RENOGRAPHY is available.

Radionuclide Imaging Medical Definitions and Terms

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