Analysis of the hepatic vessels structure in potential liver donors

Abstract

Aim. To analyze anatomic variants of arterial and venous blood supply of liver in potential liver donors by using of CT-angiography (CTA).Material and methods. CTA data of 151 potential donors have been examined for the period 01.01.2016-01.01.2018. Non-ionic iodine-containing (320 mg/ml) contrast agent was used at a dose of 1.4 ml/kg and infusion rate near 4.0 ml/s. Variants of arterial anatomy were classified according to N. Michels, portal vein anatomy — according to T Nakamura classification (2002).Results. N. Michels type I was the most common variant of arterial structure (n = 108, 71.5%). Types II and III were observed in 8.6% and in 7.9% of cases, respectively. Types IV and IX included the same number of donors (2.6%). Types VII and VIII were the rarest (0.7% and 1.3%). Types V, VI, X were absent. There were 7 cases (4.6%) with arterial variants which are not described by N.Michels classification. Moreover, 3 types were not previously described by other authors.Conclusion. Hepatic artery variations coincide with the classification of N. Michels as a rule (95.4%). Other anatomic variants not described in this classification were observed only in 4.6% of cases.