Abstract
As new imaging modalities emerge and existing technologies improve, indications for a particular imaging method may change. This article examines current indications for abdominal and prostatic ultrasound examination and, where possible, compares ultrasound with other imaging techniques. This is not an attempt to list all possible ultrasound indications or examinations, but rather an attempt to serve as an aid to informed imaging selection based on current literature and equipment. (JAMA. 1991;265:1726-1731)