Utilizing Patient-Specific 3D Printed Guides for Graft Reconstruction in Thoracoabdominal Aortic Repair

Background: In thoracoabdominal aortic aneurysm repair, repairing the visceral and segmental arteries is challenging. Although there a pre-hand-sewn multi-branched graft based on conventional image-based technique, it has shortcomings in precisely positioning directing arteries. Methods: We introduce two new reconstruction techniques using patient-specific 3D-printed guides: 1) model-based technique that presents projected graft, visualizing main body its major branches 2) guide-based which branching vessels visualization model are replaced by marking points identifiable tactile sense. The guides cover segmentation, design, fabrication, post-processing, clinical application of open surgical repair aneurysm, proved to be efficient for accurately reconstructing customized grafts. Findings: This study demonstrated effectiveness efficiency evaluating with digital model. accuracy, reproducibility, satisfaction were higher than time requirement was reduced. Interpretation: have potential improve outcome as they can solve anatomical hurdles individual variation focus important procedures reducing level fatigue operating surgeons lengthy exhausting surgery. Funding Information: supported grant Korea Health Technology R&D Project through Industry Development Institute (KHIDI), funded Ministry & Welfare, Republic (HI18C2383). Declaration Interests: authors declare no competing interests. Ethics Approval Statement: institutional review board human investigations at Asan Medical Center approved this waiver informed consent from patients because use retrospective imaging data. data de-identified, accordance Insurance Portability Accountability Act privacy rule.