Ultrasound (US) image of the subacromial-subdeltoid bursa (small arrows [hypoechoic line]).
Deltoid: deltoid muscle; Large arrows: peri-bursal fat (hyperechoic, granular appearance); SS: supraspinatus; GT: superior facet of the greater tuberosity; Humeral head: head of the humerus bone. Left: medial; Right: lateral; Bottom of screen: deep; Top of screen: superficial.
Courtesy of Jonathan Finnoff, DO. Used with permission of Mayo Foundation for Medical Education and Research. All rights reserved.