- protocols: fat suppressed T2 wt images and proton density weighted images
- older protocol: T1 & T2 coronal oblique spin-echo sequences with use of 14 cm field of view and a four-millimeter slice thickness;
- it is the most important view for identification of a lesion of rotator cuff, as supraspinatus and infraspinatus are seen in continuity w/ their insertion on greater tuberosity;
- axis is parallel to supraspinatus muscle and tendon;
- infraspinatus is seen on posterior images and is more obliquely oriented;
- it shows relationship between supraspinatus & acromion (& AC joint);
- sagittal oblique plane, allows optimum visualization of supraspinatus outlet and of the shape of the acromion;
- coracoclavicular, coracohumeral, & CA ligaments can sometimes be seen;
- Anterior Coronal Oblique Images:
- supraspinatus tendon may curves anteriorly, which may cause averaging of images w/ rotator interval which may cause an increased signal and false impression of rotator cuff tear
- Case Example: (55-year-old female with large rotator cuff tear which lead to anterior instability)
Abnormal findings on magnetic resonance images of asymptomatic shoulders.
The use of MRI about the shoulder. Beltran J. J Shoulder Elbow Surg. 1992;1:321.