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Ann Thorac Surg 2007;83:1854-1857
© 2007 The Society of Thoracic Surgeons
a Department of Cardiac Surgery, Ludwig-Maximilians-University, Munich, Germany
b Institute of Micro Technology and Medical Device Technology, Technical University Munich, Garching, Germany
Accepted for publication December 4, 2006.
* Address correspondence to PD Dr Sodian, Department of Cardiac Surgery, Ludwig-Maximilians-University, Marchioninistr. 15, Munich, 81377 Germany (Email: ralf.sodian{at}med.uni-muenchen.de).
Purpose: Currently we are exploring the impact of using rapid prototyping techniques for surgical planning and intraoperative orientation during the correction of complex congenital malformation.
Description: We studied a patient with a left abnormal subclavian artery and right descending aorta as a rare cause of dyspnea and dysphagia. The patient was examined by magnetic resonance imaging angiography. The image data were visualized and reconstructed. Afterward a replica of the malformation was fabricated using a rapid prototyping machine. In addition, a stereolithographic model of an intracardiac lesion (ventricular septal defect) was fabricated with data obtained from a computed tomographic scan.
Evaluation: Using data derived from a magnetic resonance imaging angiography or computed tomographic scan linked to proprietary software, we were able to create three-dimensional reconstructions of complex vascular pathology and intracardiac lesions. In addition, we fabricated replicas of congenital malformations using a rapid prototyping machine. The models could be sterilized and taken to the operating room for orientation during the corrective surgical procedure.
Conclusions: Stereolithographic replicas are helpful for choosing treatment strategies, surgical planning of corrections, and intraoperative orientation, and as demonstrations on life-like models for the patient.
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