Korean J Urol.  1999 Dec;40(12):1640-1646.

Errors of Prostate Volume between Actual Models and Transrectal Ultrasonographic Measurement

• An HJ
• Lee CK
• Rhew HY

Abstract

PURPOSE: To determine the relative accuracy of transrectal ultrasonographic measurement of prostate volume in comparison to actual volume of prostate and its clinical application.
MATERIALS AND METHODS
Forty-five benign prostate hyperplasia patients who were undergone transrectal ultrasonography for prostatic volume estimation in Kosin university hospital were selected. Prostate models in equal size with ultrasonographically estimated prostatic size were made and used as model I group. We also made twenty prostate models in different size and used as model II group. We compared measurement of ultrasonographic volume of prostate model with actual volume of prostate model in two groups.
RESULTS
In model I group, the most accurate method in estimating prostate volume was variation of the spheroid formula with correlation coefficient of 0.892 and then ellipsoid formula with correlation coefficient of 0.887. In model II group, the most accurate method in estimating prostate volume was ellipsoid formula with correlation coefficient of 0.945 and then variation of the spheroid formula with correlation coefficient of 0.929.
CONCLUSIONS
When different volume ranges were considered, it was suspected that ellipsoid formula provided the closest estimate of prostate volume in less than 50cc range and variation of the spheroid formula in more than 50cc range in estimating the prostate volume.

Keyword

Prostate volume; Transrectal ultrasonography

MeSH Terms

Humans
Hyperplasia
Prostate*
Ultrasonography