Ultrasonographic anatomy of normal prostate gland: reconstruction by computer graphics.

Computer graphic reconstructions of the prostate were made in both the transverse (axial) and longitudinal (sagittal) planes at different levels on the basis of the normal anatomic model of McNeal. Additional images then were created to give a picture of what the ultrasonogram should look like at each level, and these were compared with actual ultrasonograms of the normal prostate. A precise yet simple terminology is suggested for prostate ultrasonographic descriptions.