How Much Radiation Is in a DEXA Scan?
Short answer: A DEXA scan uses a very low dose of ionising radiation. At WLC Medical in Belmont, Perth, we use a GE Lunar iDXA medical-grade DEXA scanner for bone density and total body composition assessments. One way to put the radiation exposure into perspective is to compare it with other everyday and medical exposures. A flight between Perth and the Pilbara can expose a person to several times the radiation of a typical DEXA scan due to naturally occurring cosmic radiation at altitude. DEXA also uses considerably less radiation than many other forms of medical imaging. Depending on the examination, a standard X-ray may involve tens of times more radiation than a typical DEXA scan, while CT scans generally involve substantially higher radiation doses again. At WLC Medical, we follow the radiation protection principle of As Low As Reasonably Achievable (ALARA) and do not perform DEXA scans during pregnancy. Overall, DEXA provides detailed information about bone density and body composition using a very low radiation dose.
Long answer:
Why Does a DEXA Scan Use Radiation? DEXA stands for Dual-Energy X-ray Absorptiometry. The scanner…