2001 (and backfills for previous years) / DB reference years
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Author Kato K, Ishiguchi T, Maruyama K, Naganawa S, Ishigaki T. Department of Radiology, Nagoya University School of Medicine, Nagoya, Japan. ky-kato@est.hi-ho.ne.jp
Source J Comput Assist Tomogr 2001 Mar-Apr;25(2):300-4 1
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. (Auth abstract) XX