Non-invasive; second-line solution; great repeatability; quantitative Evaluation; ready to distinguish arterial ED To keep up a business erection for the duration of sexual intercourse, blood requires to remain from the penis until ejaculation. This is certainly attained in the constriction of veins, termed veno-occlusion, which traps blood in the penis. https://sgvasculargrp.com/medical-condition/erectile-dysfunction/