Neck pain is one of the most common symptoms of cervical spine disease. and segmenting neck muscles to create volumetric measurements may assist clinical diagnosis. While image registration is used to segment medical images. registration is highly challenging for neck muscles due to their tight proximity. https://www.spidertattooz.com/OPI-GelColor-The-Color-That-Keeps-On-Giving-0-5-oz-HPJ07-p22791/