Fig. 4
From: Quasi-dendritic sulfonate-based organic small molecule for high-quality NIR-II bone-targeted imaging
a NIR-II FI of normal mice and osteoporosis mice in supine position were obtained at 0.5 and 2 h after injection, respectively. Imaging parameters: 1300 filter, exposure 3000 ms. Dotted box in white: soft tissue. b Corresponding leg-tissue fluorescence signal ratio of the two groups. c NIR-II FI of skulls in normal (left) and osteoporotic mice (right). Imaging parameters: 1300 filter, exposure 500 ms. d NIR-II FI of shanks in normal (left) and osteoporotic mice (right). e, f Corresponding normalized FL intensity distribution along yellow/red lines in corresponding figures c and d. Error bars, mean ± SD (n = 3)