Fig. 1

Distributions of postoperative Matsushima grades in groups with different anastomosis procedure. A intraoperative microscopic photographs showed the side-to-side (S-S) anastomosis between superficial temporal artery (STA) and the recipient artery (RA). The lower left panel showed the anastomosis after completion, and the lower right panel showed the indocyanine green fluorescence angiography corresponding to the surgical field, which showed the patency of the bypass. The dotted circle indicates the anastomosis site; B the bar chart showed the distribution of each postoperative Matsushima grades in end-to-side (E-S) group and S-S group, and the two groups have obvious differences in Matsushima grade D (P < 0.05); C, Illustrations of postoperative Matsushima grades A-C in the S-S group, and Matsushima grade D from E-S group. Red arrows showed the course of STA parietal branch, blue arrows indicated the RA, white dotted irregular rings inferred the areas of postoperative revascularization. DSA, digital subtraction angiography.