J Korean Androl Soc.  1994 Jan;12(1):37-41.

Usefulness of Radioisotope Erection Penography as Screening Test for Vasculogenic Impotence

  • 1Department of Urology and 1Nclear Medicine, Dong-A University College of Medicine, Pusan, Korea.


To evaluate the clinical usefulness of radioisotope erection penography as a screening test for the vasculogenic impotence, we reviewed retrospectively 99mTc-HSA erection penography in 37 patients who were proved to have impotence by various diagnostic workups. 25 normal males were studied as a control group. Papaverine HCI 30 mg was injected into the corpus cavernosum, and stimulataneously 99mTc-HSA 20 mCi was injected via the antecubital vein. After injection, radioactivies in the penile area were detected for 30 minutes by a gamma camera, and a time activity curve was displayed. We defined transit time(TT) as the time to reach peak activity, erection persistence time(EPT) as the duration of peak activity and venous index(VI) as the ratio of radioactivity(30min/TT). In the 25 normal males, TT was 7.11+/-1.86min, EPT 19.74+/-5.12min, and VI 0.91+/-0.09. In the arteriogenic impotence group, TT was delayed significantly(TT=10.68+/-2.82min;p<0.05). In the venogenic impotence group, EPT was shortened and VI was decreased significantly(EPT=6.18+/-6.82min, VI=0.66+/-0.23;pp<0.05). The TT, EPT, and VI were not different significantly from control values in the neurogenic impotence group. We think that 99mTc-HSA erection penography is a useful screening test for vasculogenic impotence and the differentiation of arteriogenic from venogenic impotence.

MeSH Terms

Erectile Dysfunction
Gamma Cameras
Impotence, Vasculogenic*
Mass Screening*
Retrospective Studies
Technetium Tc 99m Aggregated Albumin
Technetium Tc 99m Aggregated Albumin
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