Ultrasonic duplex system to facilitate assessment of portal blood flow velocity

Tetsuya Iwanaga, Y. Iso, M. Hashizume, N. Koyanagi, S. Kitano, K. Sugimachi

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

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 × 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 simul-taneously 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.

Original languageEnglish
Pages (from-to)178-184
Number of pages7
JournalEuropean Surgical Research
Volume19
Issue number3
DOIs
Publication statusPublished - Jan 1 1987

Fingerprint

Blood Flow Velocity
Ultrasonics
Ethiodized Oil
Portal Vein
Blood Volume
Agar
Liver Diseases
Catheters
Hemodynamics

All Science Journal Classification (ASJC) codes

  • Surgery

Cite this

Iwanaga, T., Iso, Y., Hashizume, M., Koyanagi, N., Kitano, S., & Sugimachi, K. (1987). Ultrasonic duplex system to facilitate assessment of portal blood flow velocity. European Surgical Research, 19(3), 178-184. https://doi.org/10.1159/000128698

Ultrasonic duplex system to facilitate assessment of portal blood flow velocity. / Iwanaga, Tetsuya; Iso, Y.; Hashizume, M.; Koyanagi, N.; Kitano, S.; Sugimachi, K.

In: European Surgical Research, Vol. 19, No. 3, 01.01.1987, p. 178-184.

Research output: Contribution to journalArticle

Iwanaga, T, Iso, Y, Hashizume, M, Koyanagi, N, Kitano, S & Sugimachi, K 1987, 'Ultrasonic duplex system to facilitate assessment of portal blood flow velocity', European Surgical Research, vol. 19, no. 3, pp. 178-184. https://doi.org/10.1159/000128698
Iwanaga T, Iso Y, Hashizume M, Koyanagi N, Kitano S, Sugimachi K. Ultrasonic duplex system to facilitate assessment of portal blood flow velocity. European Surgical Research. 1987 Jan 1;19(3):178-184. https://doi.org/10.1159/000128698
Iwanaga, Tetsuya ; Iso, Y. ; Hashizume, M. ; Koyanagi, N. ; Kitano, S. ; Sugimachi, K. / Ultrasonic duplex system to facilitate assessment of portal blood flow velocity. In: European Surgical Research. 1987 ; Vol. 19, No. 3. pp. 178-184.
@article{e3646b71ccd244c591edf69db2e57d43,
title = "Ultrasonic duplex system to facilitate assessment of portal blood flow velocity",
abstract = "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 × 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 simul-taneously 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.",
author = "Tetsuya Iwanaga and Y. Iso and M. Hashizume and N. Koyanagi and S. Kitano and K. Sugimachi",
year = "1987",
month = "1",
day = "1",
doi = "10.1159/000128698",
language = "English",
volume = "19",
pages = "178--184",
journal = "European Surgical Research",
issn = "0014-312X",
publisher = "S. Karger AG",
number = "3",

}

TY - JOUR

T1 - Ultrasonic duplex system to facilitate assessment of portal blood flow velocity

AU - Iwanaga, Tetsuya

AU - Iso, Y.

AU - Hashizume, M.

AU - Koyanagi, N.

AU - Kitano, S.

AU - Sugimachi, K.

PY - 1987/1/1

Y1 - 1987/1/1

N2 - 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 × 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 simul-taneously 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.

AB - 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 × 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 simul-taneously 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.

UR - http://www.scopus.com/inward/record.url?scp=0023192630&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0023192630&partnerID=8YFLogxK

U2 - 10.1159/000128698

DO - 10.1159/000128698

M3 - Article

C2 - 2956110

AN - SCOPUS:0023192630

VL - 19

SP - 178

EP - 184

JO - European Surgical Research

JF - European Surgical Research

SN - 0014-312X

IS - 3

ER -