Why is Tc99m prefered for nuclear scan?
Technetium- 99m (metastable isomer) is the most frequently used radionuclide in nuclear medicine today. Its parent nuclide, molybdenum-99 (99Mo), can be produced in either a reactor or a cyclotron. 99Mo has a half-life of 66 h and therefore 99Mo/99mTc generators can conveniently be supplied weekly to nuclear medicine departments, providing a fresh daily supply of the radionuclide. The 6-h half-life of 99mTc is sufficiently long for most imaging applications and its 140-keV gamma radiation has reasonable tissue penetration but can still be easily collimated
Why is Tc99m prefered for nuclear scan? Reviewed by Sumer Sethi on Thursday, October 16, 2014 Rating: