Fig. 8
From: Pelvic heterotopic ossification: when CT comes to the aid of MR imaging
A 41-year-old male paraplegic following spinal trauma. a CT axial scan defines a bulky calcific mass located within the anterior compartment of the right thigh and the gluteus minimus muscle. On MR images (b–d), the mass is characterised by heterogeneity on STIR (b) and T1-weighted (c) images. d Focal contrast-enhancement appears on T1-weighted imaging following i.v. gadolinium administration (arrows)