Imaging for erectile dysfunction.

Radiological imaging in the field of erectile dysfunction has diminished in importance over the past 5 years with the advent of new therapies. However, in selected cases, Doppler scanning continues to have a role, and current research is aimed at optimizing the results of the tests. In addition, the new techniques of functional magnetic resonance imaging and positron emission tomography scanning are beginning to offer new insights into the central mechanisms which control erections.