Iwanaga T, Iso Y, Hashizume M, Koyanagi N, Kitano S, Sugimachi K
Eur Surg Res. 1987;19(3):178-84. doi: 10.1159/000128698.
The usefulness of an ultrasonic duplex system to assess portal blood flow was investigated. In a model involving a steady flow through a vinyl tube in agar, there was a significant linear correlation between the maximum blood flow velocity measured by this system (V-max) and the mean blood flow velocity calculated from the actually measured blood flow volume (V-mean), that is, V-mean = 0.53 X V-max was obtained (r = 0.994; n = 47). This equation was used to calculate the mean portal blood flow velocity by this system (V-dopp) in 10 patients with liver disease, and the findings were compared with data simultaneously obtained by cineangiographic mapping of Lipiodol droplets released into the portal vein through a catheter placed in situ at the time of surgery (V-cine). A linear correlation between V-dopp and V-cine was statistically significant (r = 0.970; n = 13), and the regression line was V-cine = 1.29 X V-dopp -2.11. The ultrasonic duplex system proved reliable for a quantitative assessment of portal hemodynamics.
研究了超声双功系统评估门静脉血流的实用性。在一个通过琼脂中的乙烯管进行稳定血流的模型中，该系统测量的最大血流速度（V-max）与根据实际测量的血流量计算出的平均血流速度（V-mean）之间存在显著的线性相关性，即得到V-mean = 0.53×V-max（r = 0.994；n = 47）。该公式用于计算10例肝病患者通过此系统测得的门静脉平均血流速度（V-dopp），并将结果与手术时通过原位放置在门静脉的导管释放碘油微滴的电影血管造影测绘同时获得的数据（V-cine）进行比较。V-dopp与V-cine之间的线性相关性具有统计学意义（r = 0.970；n = 13），回归线为V-cine = 1.29×V-dopp - 2.11。超声双功系统被证明在定量评估门静脉血流动力学方面是可靠的。
