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

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.