A comparison of radioisotope erection penogram, penile angle and nocturnal penile tumescence test / 대한비뇨기과학회지

Intracavernous papaverine injection may be the first step in the assessment of the impotent patient Since measurement of the rigidity requires a sophisticated procedures that may not be available to the majority of the practitioners, we attempted to find an objective method to evaluate the results or this common test. We tested 44 patients complaining of impotence and 2 normal potent men with intracavernous injection of 30mg. papaverine and measured the angle between the penis and the legs with the patient in the standing position and obtained radioisotope erection penogram. Various penogram indexes were calculated from the time activity curve and their usefulness was evaluated and was compared with the findings of nocturnal penile tumescence. The papaverine test can distinguish between the vasculogenic and psychogenic impotent patients. Measurement of the erectile angle after intracavernous injection of papaverine is a simple, objective and reliable method to evaluate patients with vascular impotence. The penogram indexes were significantly correlated with the penile arterial inflow and venous outflow during erection. but not significantly correlated with nocturnal penile tumescence test.

The Comparison of Nocturnal Erection Using Rigiscan with Erotic Erection Using Audiovisual Stimulating Penogram / 대한비뇨기과학회지

Penile erection is either sexual stimulating erection or nocturnal erection. The difference of precise mechanism between the two types is not clarified yet. In order to evaluate nocturnal erection, we used the Rigiscan which could simultaneously record nocturnal penile tumescence and rigidity. And sexual stimulating erection was evaluated by Audiovisual Stimulating Penogram which was introduced by Choi and Kim in 1987. The following results were obtained. The compatibility ratio of 16 normal sexual stimulating erection to nocturnal erection test was 56%, while that of 35 cases of abnormal sexual stimulating erection was 51% . The compatibility ratios of the group IIA and group IIC were 80% and 78%, respectively, revealing high percentage of concordance between the two types of erection. On the other hand, the compatibility ratio of group IIB was low(33%). From the results presented here, it can be concluded that the AVS-Penogram is useful for the screening test and to obtain more useful information, evaluation of the nocturnal erection using Rigiscan is necessary.