RESUMO
Objective To investigate the relationship between diameter and drainage territory of tributaries of the hepatic vein and the clinical value of hepatic venous drainage territory evaluation before LDLT.Methods MSCT covering abdomen was performed on 68 donors.The images were transported and reconstructed in GE Advantage Windows 4.2 workplace and IQQA-liver CT images readout and analytical system.The tributaries of hepatic vein were marked,and the diameter and drainage territory were measured.Functional hepatic volume (FHV),and effective hepatic volume (EfHV) of donors and recipients according to the hepatic venous reconstruction results during the operation were calculated.The corresponding graft-to-recipient body weight ratio of recipients was calculated.Results In the tributaries of 220 hepatic veins studied,the coefficient correlation of diameter and drainage territory was 0.752 (P≤0.01),but there was significant difference in the drainage territory of the veins with same diameter.By using Chi-square analysis,venous diameter and drainage territory are classified and statistical frequency by 5 mm and 50 cm3 respectively,and there was statistically significant difference between them (X2 =61.97,P＜0.01).The mean value of drainage territory of RHV (RHVV) was 510.80 ± 168.33 cm3,and that of RFHV (drainage territory with reconstructed IRHV added) was 577.26± 156.72 cm3 respectively.The mean value of drainage territory of LHV (LHVV) was 292.70 ± 76.61 cm3,and that of LFHV (drainage territory with Ⅳ segment tributaries of MHV added) was 551.26 ± 111.82 cm3 respectively.In 25 grafts without MHV,the mean value of drainage territory of EfHV was 405.52-1038.43 cm3.In 43 donors donating grafts with MHV,the mean value of drainage territory of EfHV was 175.35-575.35 cm3.Conclusion There is significant difference in drainage territory of same diameter veins.Bigger diameter doesn't always mean bigger drainage territory.Hepatic vein drainage territory evaluation before LDLT has important clinical significance to formulate surgery scheme.