Fig. 5From: Technical opportunities and challenges in developing total-body PET scanners for mice and ratsTotal-body small animal PET scanners need to have an axial length longer than the length of the mice/rats to maximize sensitivity across the entire body of the animals. The PET scanner (H2RS110) shown in this figure, which is designed for total-body mouse studies only, has a 110Â mm ring diameter and 167Â mm axial length [12]Back to article page