MicroSPECT images. A panel of coronal whole-body images of a healthy rat at 3, 23, 43, 62, 82, and 102 min and 24 h after the injection of 45 MBq 123I-CMICE-013 (A). The circled areas are indicated as the heart, liver, large intestine, and stomach. The bright spots in the 24-h image were identified as the thyroid, stomach, 123I source, and bladder. Volumes of interest (VOIs) for imaging biodistribution analysis were drawn around all areas of focal uptake in the 23- to 102-min summed images (B).