Fig. 2
From: Pelvic heterotopic ossification: when CT comes to the aid of MR imaging
A 55-year-old tetraplegic male patient following vertebral trauma. a Axial CT scan shows a bilateral ossifying process about the femural metaphyseal region with some amorphous calcifications in the ileopsoas muscle area. A left throcanteric calcific bursitis is also observed. b–d MR imaging: (b) axial STIR and (c) T1-weighted axial images show bilateral ileopsoas bursitis (small arrows) on the right merging to a mature ossification. d T1-weighted fat-suppressed images after contrast administration show, on the right side, peripheral enhancement of the bursal walls (large arrow)