Fig. 1From: Technical opportunities and challenges in developing total-body PET scanners for mice and ratsAxial length and diameter of small animal scanners with axial lengths longer than 90Â mm [13, 21, 28,29,30,31, 38, 40,41,42,43,44,45,46,47,48]. Only scanners with published results were selected. References of the scanners are shown in Table 3Back to article page