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Study of hepatic vascular anatomy with multidetector computed tomography
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Abstract
SUMMARY
Aims: To identify the prevalence of normal anatomy and vascular variants of hepatic vessels by using multidetector computed tomography (MDCT).
Methods: We conducted a retrospective study of 611 adults who, for different reasons, came to university medical center Hochiminh city, all underwent abdominal MDCT with contrast material. From the data stored in PACS, using image processing applications (MPR, CPR, MIP, VR) to investigate anatomy of the hepatic artery, the portal vein and the hepatic vein systems.
Results: From 08/2017 to 08/2018 at University Medical Center, HCMC, a total of 564 of the 611 patients had the common hepatic artery originated the celiac axis, anatomic variations were seen in 7.7% of patients. 9 of 10 anatomic types (criteria laid by Michels ‘s classification) were identified in our study, type 1 (the typical type) seen in 73.6% cases, we also found 5 other types of the hepatic artery not mentioned in Michels classification (3.1%). Normal anatomy of portal vein was identified in 84.1% of cases. Trifurcation - the most popular type of portal vein variants was seen in 11.3% of patients. The common trunk between the left hepatic vein and the median hepatic vein was seen in 58.6% cases. The accessory right hepatic veins were identified in 45.5% of the patients. There were not correlation between kinds of hepatic vascular variants (p>0.05).
Conclusion: Hepatic vascular anatomy plays an important role in hepatectomy, pancreaticoduodenectommy and living liver transplantation. Because of high prevalence of vascular variants, knowledge of these abnormalities and their frequency is of major importance for the surgeon as well as the radiologist.
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References
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