Fig. 3

Comparison of whole-body vascular imaging between NIR-IIa window and NIR-IIb window. A Schematic illustration of the NIR-IIa imaging and NIR-IIb imaging strategy. B NIR-IIa vascular imaging for whole-body imaging of living mice. C Region of interest (abdominal region) from the red-dashed box in B; the yellow arrows indicated the epigastric artery. D The quantified SBR of abdominal region in NIR-IIa imaging and NIR-IIb imaging. * indicated P < 0.05. E Region of interest (femoral region) from the red-dashed box in B; the blue arrows indicated the femoral artery. F The quantified SBR of femoral region in NIR-IIa imaging and NIR-IIb imaging. * indicated P < 0.05. G NIR-IIb vascular imaging for whole-body imaging of living mice. H Region of interest (abdominal region) from the red-dashed box in G; the yellow arrows indicated the epigastric artery. I The epigastric artery diameter proportion of FWHM to DM. * indicated P < 0.05. J Region of interest (femoral region) from the red-dashed box in G; the blue arrows indicated the femoral artery. K The femoral artery diameter proportion of FWHM to DM. * indicated P < 0.05