Tsai S C, Kao C H, Wang S J
Department of Nuclear Medicine, Taichung Veterans General Hospital, Taiwan, Republic of China.
Abdom Imaging. 1997 May-Jun;22(3):354-6. doi: 10.1007/s002619900207.
Nineteen impotent patients were included in the study. Radioisotope penile plethysmography using technetium-99m-labelled RBC was performed on each patient before and after intracavernosal injection of prostaglandin E1 (PGE1) for quantitating the penile hemodynamic change. The peak penile blood flow (PPF) and penile blood volume change (dPV) were evaluated. The results revealed that (a) the PPF values (mean 2.24 +/- 1.38 ml/min) of all patients were lower than that of the patients with no arterial changes previously reported, and (b) there was good correlation between PPF and dPV (r = 0.75). We conclude that quantitative radioisotope penile plethysmography coupled with intracavernosal injection of PGE1 is a valuable method for the objective evaluation of the penile erectile response of impotent patients, and that the PPF values of the impotent patients with arterial insufficiency might be a reliable parameter of penile volume change.
19名阳痿患者被纳入该研究。在阴茎海绵体内注射前列腺素E1（PGE1）前后，对每位患者进行了使用锝-99m标记红细胞的放射性同位素阴茎体积描记术，以定量阴茎血流动力学变化。评估了阴茎血流峰值（PPF）和阴茎血容量变化（dPV）。结果显示：（a）所有患者的PPF值（平均2.24±1.38毫升/分钟）低于先前报道的无动脉改变患者的PPF值；（b）PPF与dPV之间存在良好的相关性（r = 0.75）。我们得出结论，定量放射性同位素阴茎体积描记术结合阴茎海绵体内注射PGE1是客观评估阳痿患者阴茎勃起反应的一种有价值的方法，并且动脉供血不足的阳痿患者的PPF值可能是阴茎体积变化的一个可靠参数。
