SPECT imaging of melanocortin-1 receptor binding α-MSH peptide, CCMSH, in melanoma-bearing mice. Whole-body and transaxial images of 99mTc-(Arg11)CCMSH (A and B, respectively) and 111In-DOTA-Re(Arg11)CCMSH (D and C, respectively) in B16/F1 flank melanoma-bearing C57 mice at 2 h after injection. Whole-body and transaxial images of 99mTc-(Arg11)CCMSH (E and F, respectively) and 111In-DOTA-Re(Arg11)CCMSH (H and G, respectively) in B16/F10 pulmonary metastatic melanoma-bearing C57 mice 2 h after injection. Reprinted with permission from reference number 24 (Figure 2), Copyright 2007 Society of Nuclear Medicine.