Source:http://linkedlifedata.com/resource/umls/id/C0000853
MSH: A noninvasive method for assessing BODY COMPOSITION. It is based on the differential absorption of X-RAYS (or GAMMA RAYS) by different tissues such as bone, fat and other soft tissues. The source of (X-ray or gamma-ray) photon beam is generated either from radioisotopes such as GADOLINIUM 153, IODINE 125, or Americanium 241 which emit GAMMA RAYS in the appropriate range; or from an X-ray tube which produces X-RAYS in the desired range. It is primarily used for quantitating BONE MINERAL CONTENT, especially for the diagnosis of OSTEOPOROSIS, and also in measuring BONE MINERALIZATION.,CSP: method of in vivo bone densitometry based on transmission of high energy photons, typically utilizing an I-125 source and NaI scintillation detector; newer, dual photon methods overcome variance due to differences in surrounding fat and other soft tissue.