Non-invasive estimation of male bladder retention.

Abstract

Using opaque solution of varying amounts instilled in bladders already having indwelling catheters, radiographs were made by a standard technique. From a number of those showing the most common bladder contour (globoid, without distortion) an average was obtained and tracings of actual size made to form templates. This seems to compare favorably to other methods in accuracy and is quite superior in speed of estimating residuals after voiding, without invasion.