Technetium tc 99m exametazime
Technetium Tc-99m exametazime is a radiopharmaceutical sold under the trade name Ceretec used in the detection of altered regional cerebral perfusion in stroke and other cerebrovascular diseases. It can also be used for the labelling of leukocytes to localise intra-abdominal infections and inflammatory bowel disease. Exametazime, also known as hexamethylpropyleneamine oxime or HMPAO, acts as a chelating agent for the Tc-99m radioisotope.