# Variations in origin of middle hepatic artery, a CT angiographic study

## TL;DR

This study uses CT scans to examine variations in the middle hepatic artery, which is important for liver surgeries and transplants.

## Contribution

The study provides new insights into the anatomical variations of the middle hepatic artery using CT angiography.

## Key findings

- The proper hepatic artery typically divides into right and left hepatic arteries in 93.1% of cases.
- The middle hepatic artery most commonly arises from the left or right hepatic artery in 76.6% of cases.
- Arterial variations were observed in 42% of the studied population.

## Abstract

A detailed understanding of hepatic arterial and portal venous anatomy is essential for liver-centric therapies and surgical procedures,
especially transplantation. This cross-sectional CT angiographic study was conducted on 50 subjects (12-75 years) at King George's Medical
University, Lucknow. The proper hepatic artery divided into Right Hepatic Artery (RHA) and Left Hepatic Artery (LHA) in 93.1% of cases, while
trifurcation was rare (4%); overall, 42% showed arterial variations. The middle hepatic artery (MHA) most commonly arose from the LHA
(44.7%) or RHA (31.9%), with dual arterial supply to segment IV in 6% of cases. Identifying these variations through CT angiography is
crucial for preoperative planning to optimize surgical outcomes and reduce complications.