A simple formula to calculate the liver drainage volume of the accessory right hepatic vein using its diameter alone

Jun Hanaoka, Mitsuo Shimada, Hideaki Uchiyama, Toru Ikegami, Satoru Imura, Yuji Morine, Hirofumi Kanemura

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Background: The liver sometimes has an accessory middle or inferior right hepatic vein (RHV) in addition to the usually existing superior RHV. In liver surgery, it is important to know the parenchymal drainage volume of these accessory RHVs to avoid postoperative liver dysfunction caused by blood congestion. The purpose of this study was to determine methods to estimate parenchymal drainage volume of such accessory veins. Methods: By reviewing the preoperative multidetector-row computed tomography (MDCT) and using specialist software, we investigated the presence of accessory RHVs, the diameter, and the parenchymal drainage volume of each vein, and we determined correlations between the diameter and parenchymal drainage volume of the accessory RHVs. Results: Middle (median diameter, 4.9 mm) and inferior (median diameter, 5.0 mm) RHVs were present in 15% and 47%, respectively, in this study. The median parenchymal drainage volume of the superior, middle, and inferior RHVs was 401 mL, 64 mL, and 116 mL, respectively. There were positive correlations between diameters and the parenchymal drainage volume of accessory RHVs (middle RHV: y = 27.1x-45.7, r = .78, P < .05; inferior RHV: y = 34.8x-57.8, r = .80, P < .01), which made it possible to calculate the parenchymal drainage volume of these veins using their diameters alone. Conclusion: Approximately half of the livers in this study had 1 or 2 accessory RHV(s), the parenchymal drainage volume of which was substantial. We can calculate the parenchymal drainage volume from the diameter of each accessory RHV on CT, which enables liver surgeons to determine how to manage these hepatic veins.

Original languageEnglish
Pages (from-to)264-268
Number of pages5
JournalSurgery
Volume146
Issue number2
DOIs
Publication statusPublished - Aug 1 2009
Externally publishedYes

Fingerprint

Hepatic Veins
Drainage
Liver
Veins
Multidetector Computed Tomography
Liver Diseases
Software

All Science Journal Classification (ASJC) codes

  • Surgery

Cite this

A simple formula to calculate the liver drainage volume of the accessory right hepatic vein using its diameter alone. / Hanaoka, Jun; Shimada, Mitsuo; Uchiyama, Hideaki; Ikegami, Toru; Imura, Satoru; Morine, Yuji; Kanemura, Hirofumi.

In: Surgery, Vol. 146, No. 2, 01.08.2009, p. 264-268.

Research output: Contribution to journalArticle

Hanaoka, Jun ; Shimada, Mitsuo ; Uchiyama, Hideaki ; Ikegami, Toru ; Imura, Satoru ; Morine, Yuji ; Kanemura, Hirofumi. / A simple formula to calculate the liver drainage volume of the accessory right hepatic vein using its diameter alone. In: Surgery. 2009 ; Vol. 146, No. 2. pp. 264-268.
@article{bbb7667fe812483a9dbcd287639c08a9,
title = "A simple formula to calculate the liver drainage volume of the accessory right hepatic vein using its diameter alone",
abstract = "Background: The liver sometimes has an accessory middle or inferior right hepatic vein (RHV) in addition to the usually existing superior RHV. In liver surgery, it is important to know the parenchymal drainage volume of these accessory RHVs to avoid postoperative liver dysfunction caused by blood congestion. The purpose of this study was to determine methods to estimate parenchymal drainage volume of such accessory veins. Methods: By reviewing the preoperative multidetector-row computed tomography (MDCT) and using specialist software, we investigated the presence of accessory RHVs, the diameter, and the parenchymal drainage volume of each vein, and we determined correlations between the diameter and parenchymal drainage volume of the accessory RHVs. Results: Middle (median diameter, 4.9 mm) and inferior (median diameter, 5.0 mm) RHVs were present in 15{\%} and 47{\%}, respectively, in this study. The median parenchymal drainage volume of the superior, middle, and inferior RHVs was 401 mL, 64 mL, and 116 mL, respectively. There were positive correlations between diameters and the parenchymal drainage volume of accessory RHVs (middle RHV: y = 27.1x-45.7, r = .78, P < .05; inferior RHV: y = 34.8x-57.8, r = .80, P < .01), which made it possible to calculate the parenchymal drainage volume of these veins using their diameters alone. Conclusion: Approximately half of the livers in this study had 1 or 2 accessory RHV(s), the parenchymal drainage volume of which was substantial. We can calculate the parenchymal drainage volume from the diameter of each accessory RHV on CT, which enables liver surgeons to determine how to manage these hepatic veins.",
author = "Jun Hanaoka and Mitsuo Shimada and Hideaki Uchiyama and Toru Ikegami and Satoru Imura and Yuji Morine and Hirofumi Kanemura",
year = "2009",
month = "8",
day = "1",
doi = "10.1016/j.surg.2009.06.004",
language = "English",
volume = "146",
pages = "264--268",
journal = "Surgery",
issn = "0039-6060",
publisher = "Mosby Inc.",
number = "2",

}

TY - JOUR

T1 - A simple formula to calculate the liver drainage volume of the accessory right hepatic vein using its diameter alone

AU - Hanaoka, Jun

AU - Shimada, Mitsuo

AU - Uchiyama, Hideaki

AU - Ikegami, Toru

AU - Imura, Satoru

AU - Morine, Yuji

AU - Kanemura, Hirofumi

PY - 2009/8/1

Y1 - 2009/8/1

N2 - Background: The liver sometimes has an accessory middle or inferior right hepatic vein (RHV) in addition to the usually existing superior RHV. In liver surgery, it is important to know the parenchymal drainage volume of these accessory RHVs to avoid postoperative liver dysfunction caused by blood congestion. The purpose of this study was to determine methods to estimate parenchymal drainage volume of such accessory veins. Methods: By reviewing the preoperative multidetector-row computed tomography (MDCT) and using specialist software, we investigated the presence of accessory RHVs, the diameter, and the parenchymal drainage volume of each vein, and we determined correlations between the diameter and parenchymal drainage volume of the accessory RHVs. Results: Middle (median diameter, 4.9 mm) and inferior (median diameter, 5.0 mm) RHVs were present in 15% and 47%, respectively, in this study. The median parenchymal drainage volume of the superior, middle, and inferior RHVs was 401 mL, 64 mL, and 116 mL, respectively. There were positive correlations between diameters and the parenchymal drainage volume of accessory RHVs (middle RHV: y = 27.1x-45.7, r = .78, P < .05; inferior RHV: y = 34.8x-57.8, r = .80, P < .01), which made it possible to calculate the parenchymal drainage volume of these veins using their diameters alone. Conclusion: Approximately half of the livers in this study had 1 or 2 accessory RHV(s), the parenchymal drainage volume of which was substantial. We can calculate the parenchymal drainage volume from the diameter of each accessory RHV on CT, which enables liver surgeons to determine how to manage these hepatic veins.

AB - Background: The liver sometimes has an accessory middle or inferior right hepatic vein (RHV) in addition to the usually existing superior RHV. In liver surgery, it is important to know the parenchymal drainage volume of these accessory RHVs to avoid postoperative liver dysfunction caused by blood congestion. The purpose of this study was to determine methods to estimate parenchymal drainage volume of such accessory veins. Methods: By reviewing the preoperative multidetector-row computed tomography (MDCT) and using specialist software, we investigated the presence of accessory RHVs, the diameter, and the parenchymal drainage volume of each vein, and we determined correlations between the diameter and parenchymal drainage volume of the accessory RHVs. Results: Middle (median diameter, 4.9 mm) and inferior (median diameter, 5.0 mm) RHVs were present in 15% and 47%, respectively, in this study. The median parenchymal drainage volume of the superior, middle, and inferior RHVs was 401 mL, 64 mL, and 116 mL, respectively. There were positive correlations between diameters and the parenchymal drainage volume of accessory RHVs (middle RHV: y = 27.1x-45.7, r = .78, P < .05; inferior RHV: y = 34.8x-57.8, r = .80, P < .01), which made it possible to calculate the parenchymal drainage volume of these veins using their diameters alone. Conclusion: Approximately half of the livers in this study had 1 or 2 accessory RHV(s), the parenchymal drainage volume of which was substantial. We can calculate the parenchymal drainage volume from the diameter of each accessory RHV on CT, which enables liver surgeons to determine how to manage these hepatic veins.

UR - http://www.scopus.com/inward/record.url?scp=67650517120&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=67650517120&partnerID=8YFLogxK

U2 - 10.1016/j.surg.2009.06.004

DO - 10.1016/j.surg.2009.06.004

M3 - Article

VL - 146

SP - 264

EP - 268

JO - Surgery

JF - Surgery

SN - 0039-6060

IS - 2

ER -