Relative merits of MRI, transrectal endosonography and CT in diagnosis and staging of carcinoma of prostate.

Magnetic resonance imaging (MRI) and transrectal sonography of 27 patients with biopsy-proved carcinoma of the prostate were performed to compare the sensitivity of these modalities to each other for diagnosis and to computed tomography (CT) for staging. Sonography was superior to MRI for the detection of intraglandular carcinoma and capsular disruption. MRI was superior to both sonography and CT for evaluating seminal vesicle invasion, and slightly better than CT for detecting lymphadenopathy.