Dye used in SPECT-
SPECT imaging: It has a 360deg revolving gamma camera giving 3D images Tc99m radioisotope is used (t1/2 = 6 hrs) Tc99m - HMPAO: Lipophilic/Lipid soluble Crosses blood brain barrier Cerebral perfusion is evaluation
O-14
Tc-99
Nitrogen-16
Iodine 124
Nuclear medicine