The male pelvis.

@article{Fritzsche1989TheMP,
  title={The male pelvis.},
  author={Peggy J Fritzsche and M J Wilbur},
  journal={Seminars in ultrasound, CT, and MR},
  year={1989},
  volume={10 1},
  pages={11-28}
}
Pelvic MRI yields images with excellent anatomic resolution because of limited motion and large signal differences (contrast) between fat, muscle, and organs containing fluid or mucous. Although MRI is not appropriate in screening for pelvic malignancies and is unreliable for tumor detection, it does offer superior delineation of the extent of disease and has become the procedure of choice for pelvic tumor staging.