Visualization of the segment IV hepatic artery using 128-section MDCT angiography
Y Z Xie1, Jun Liu2, Gung Ho Chung3
1Department of Anatomy, Chonbuk National University Medical School, Jeonju, Republic of Korea; Department of Radiology, Taishan Medical University Taishan Hospital, Taian, China.
Clinical Radiology
|July 3, 2014
Summary
Multidetector computed tomography (MDCT) angiography effectively visualizes segment IV hepatic arteries and their anatomical variations. Understanding these arterial patterns is crucial for planning liver surgeries and radiological procedures.
Area of Science:
- Radiology
- Vascular Anatomy
- Surgical Planning
Background:
- The hepatic artery anatomy, particularly segment IV, is complex and prone to variations.
- Accurate visualization of segment IV hepatic arteries is critical for liver surgery and interventional radiology.
Purpose of the Study:
- To visualize the segment IV hepatic artery using multidetector computed tomography (MDCT) angiography.
- To evaluate anatomical variations of the segment IV hepatic artery.
Main Methods:
- MDCT angiography was performed on 617 patients using a 128-section MDCT system.
- Segment IV hepatic arteries of 453 patients with adequate image quality were analyzed using volume rendering, MIP, and MPR by radiologists and an anatomist.
Main Results:
- Segment IV arteries were categorized into five types based on origin: LHA (51.66%), RHA (30.68%), PHA (5.3%), dual (12.14%), and triple (0.22%).
- Normal origins were observed in 73.73% of patients, while variations occurred in 26.27%.
- Novel patterns (RN2, LA2, LA3, LA4, PN2, PV1, DA1, DA2, DV3, DV4) were reported.
Conclusions:
- MDCT angiography is a valuable tool for assessing normal and variant anatomy of segment IV hepatic arteries.
- Predicting segment IV arterial patterns is essential for successful liver radiological and surgical procedures, especially hemi-liver grafts.
