STUDIES ON THE MALE SEXUAL IMPOTENCE

REPORT 3 RADIOISOTOPE PENOGRAM WITH THE USE OF ^113mIN-MICROCOLLOID

Abstract

As an objective method of differential diagnosis between functional and organic impotence, I have developed and applied a method of radioisotope penogram to demonstrate changes in circulation in the penis using a radioisotope. Some of the results have already been reported in the Journal of this society.
The most important requirement in deciding the type of isotope to be used in radioisotope penogram is the retention in the circulation for a certain period, low degree of radiation exposure, and high photon energy. For this purpose the author used ^113mIn-microcolloid to compare it with conventional radioisotope penogram using ¹¹³I-human serum albumin.
Radioisotope penogram obtained upon the use of ^113mIn-microcolloid revealed a pattern similar to that obtained with ¹¹³I-human serum albumin. In the penogram of patient with functional impotence, loading with Fujicapin caused an increase of blood flow in the penis. The count value was 3-5 times as high as that in the use of ¹¹³I-human serum albumin, which made the evaluation of the curve more easy.
In cases of organic impotence, no reaction whatsoever was seen to Fujicapin even upon the use of ^113mIn-microcolloid. As stated above, the use of ^113mIn-microcolloid facilitates the differentiation between these two conditions.