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. 2001 Mar-Apr;25(2):300-4.
doi: 10.1097/00004728-200103000-00026.

Accuracy of plastic replica of aortic aneurysm using 3D-CT data for transluminal stent-grafting: experimental and clinical evaluation

K Kato  1 , T Ishiguchi, K Maruyama, S Naganawa, T Ishigaki
Affiliations

Accuracy of plastic replica of aortic aneurysm using 3D-CT data for transluminal stent-grafting: experimental and clinical evaluation

K Kato et al. J Comput Assist Tomogr. 2001 Mar-Apr.

Abstract

Purpose: To plan stent-grafting for aortic aneurysms with complicated morphology, we prepared life-sized aortic replicas by laser stereolithography using helical 3D--CT data. The accuracy of the replica was evaluated by measurement of vessel phantoms and clinical 3D--CT data.

Method: An imaginary aortic wall was created from helical CT images of the aorta, and a hollow plastic replica was produced by laser stereolithography. The accuracy of the replica was evaluated in five abdominal aortic aneurysms by experimental phantom studies and measurements of the replicas.

Results: The mean difference in measurements between 3D--CT images and model vessels and between 3D--CT images and aortic replicas was 0.2 mm each. Therefore, the difference in measurements between real aortic aneurysms and the replicas was at most 0.4 mm.

Conclusion: The accuracy of the replica is satisfactory, making it useful for preoperative evaluation and simulation for stent-grafting.

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