In the non-vasculogenic ED group, 17( 94.4%) patients had normal nocturnal penile tumescence (NPT); and in contrast, there were 9(75.0%) and 8( 72.7%) patients with abnormal NPT in the arteriogenic and venogenic ED groups, respectively.

• 非血管性ED组NEVA结果正常达94.；4%25；而动、静脉性ED组NEVA结果异常分别为75