MRI procedures shoulder
Terms
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copy deck
- What muscle goes from the anterior scapula to the lesser tubercle?
- Subscapularis
- What position is the shoulder in for a scan?
- neutral
- Where do u prescribe slices for an axial scan?
- Surgical neck to top of AC joint
- Where do u prescribe slices on a coronal oblique scan?
-
from the infraspinatous to the supraspinatous P to A
superior edge of acromion to the inferior subscapularis (1cm below glenoid)
deltoid laterally - What are the slice prescriptions for sagittal/oblique shoulder?
-
glenoid fossa to biciptal groove
perpendicular to the supraspinatus - Where is the 3D box set for an axial 3d fsgr no fatsat?
- humeral surgical neck to the top of the AC joint
- What is the magic angle?
- 55 degrees to static field
- What pathology can the magic angle create?
- tendonitis - bright tendons on T2
- What movement causes a hill-sachs defect?
- traumatically abducted and externally rotated compressing the posterior aspect of the humeral head against the glenoid rim.
- What anatomy does a hill sachs defect affect?
- compression fracture of the postero-superior and lateral aspects of the humeral head.
- what are the T1 and T2 SIs for a hill sachs defect?
-
T1-low at injury site
T2-high at injury site