99mTc sestamibi

99mTc sestamibi

a lipophilic cationic complex of a 99mTc-labeled isonitrite, used as a radionuclide in several organs (e.g., brain, bone, thyroid, breast) for the detection of cancer, or in the heart for identifying coronary artery occlusion. It has superseded Tl 201 in cardiac imaging and in experimental breast imaging.