Hip MR arthrogram Protocol

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Indications: pain, labral pathology.

Sequences:

·        Coronal STIR of bony pelvis

·        Coronal T1 SE with fat saturation of hip

·        Sagittal T1 SE with fat saturation of hip

·        Sagittal T1 SE of hip

·        Axial T2 FSE of hip with fat saturation of hip

·        Oblique axial T1 SE with fat saturation of hip

Comments:

·        Oblique axial sequence is done parallel to the femoral neck, and is useful for diagnosing cam-type femoroacetabular impingement (FAI).

·        Alpha angles are measured from the oblique axial images.  Values are 74 +/- 5 degrees in patients with FAI, and 42 +/- 2 degrees in controls.  Notzli et al. J Bone Joint Surg Br 2002; 84: 556-560.

·        T2 FSE with fat saturation: adjust TE to 40 msec (+/-5 msec).

Dictation template:

After the administration of 10 mL of dilute intra-articular Gadolinium contrast, coronal STIR of the bony pelvis; coronal and oblique axial T1 spin echo with fat saturation, axial T2 fast spin echo with fat saturation, sagittal T1 spin echo with and without fat saturation of the affected hip.