Interactive 3D learning module for vascular anatomical variations in HPB surgery

Abstract

Background: Hepato-pancreato-biliary (HPB) vascular anatomic variations are seen in nearly half of humans. These variations can sometimes be difficult to imagine three dimensionally by trainees. We developed a computer module that contains 3D interactive models of main vascular anatomical variations of HPB system a surgeon may encounter in daily practice. Methods: We used 3D modeling and illustration softwares including Maya®, Blender® and MS Powerpoint®. Variations of celiac trunk, portal vein and hepatic veins were created in conformity with three reference articles on vascular anatomical variations. Finally, some interactive futures were added to the software. The module was made available to Turkish General Surgeons in DVD format. Results: The software contains the usual anatomy and 36 variations of the celiac trunk and its branches, the usual anatomy and 4 variations of portal venous system and hepatic veins of each. Every 3D model of anatomical structures such as segments of the liver or a vessel can be made invisible or transparent. This feature allows the user to figure out how posteriorly situated organs or vessels are positioned three dimensionally. Furthermore, the whole package or every single structure can be rotated, panned and zoomed in and out. This feature allows the user to understand how regional anatomy or a structure is seen from the back, the top or the bottom. Conclusion: This interactive 3D software will help surgeons imagine and better understand vascular anatomical variations of HPB system.