Just a few things based on previous forum posts and some reading I've been doing recently.
Venous leak - or 'Corporal Veno-Occlusive Dysfunction' - to give it it's technical title, refers specifically to the inability to compress the emissary 'outflow' veins which run beneath the Buck's Fascia. This compression only occurs when the corpus cavernosum
is sufficiently engorged to press against the Buck's Fascia thereby compressing the emissary veins and preventing blood outflow.
By this definition anyone with organic Ed
, whatever the initial cause, is technically
suffering to a greater or lesser extent with venous leak.
Having said that, in practice, clinicians appear to see venous leak as excessive outflow even when the corpus cavernosum is engorged to a point when one would normally expect outflow to be minimal. According to one urological registrar I have seen a typically sign of 'classic' venous leak is an initial full erection which subsides almost as quickly as it became rigid.
The best test for venous leak is a cavernosography, where an erection is artificially induced using caverject and a dye is injected into the penis to monitor blood flow. This link describes the process. New Radiology
I had a caversonography back in 2005-6. Alas, my memory is hazy. Before an erection was induced, a tube was inserted into my penis at the base and this continually circulated dye around my penis. One could see via live feed the contrast dye moving around the penis. Once a reasonable erection was achieved the dye stopped flowing of out and was contained in the penis. Conclusion: I did not have leak.
When it comes to a doppler ultrasound, my understanding is that it is good at detecting hardened tissues or plaque
, particularly on the tunica albuginea
, and it can also measure inflow if the gun is placed on the perineum. It isn't so good at measuring outflow however.