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.
Method of quantitative measurement of the V3 length on the left side. The superior oblique (SO) and rectus capitis posterior major (RCPM) muscles were identified. The whole length of the V3 was marked as a dashed line and measured as “c.” The length of the V3 covered by SO (blue color) and RCPM (yellow color) were measured as “a” and “b,” respectively. The center of the suboccipital triangle above the V3 is indicated with an asterisk.
