Figure 4.
Evaluation of the merged image. ① Window A; ② Window B; location of bifurcation of artery ③; and vein ④. Blue and red indicate vein and artery, respectively. L5 and S1 mean L5 vertebra and S1 vertebra, respectively.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.