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首页> 外文期刊>Catheterization and cardiovascular interventions: Official journal of the Society for Cardiac Angiography & Interventions >Rapid prototyping to create vascular replicas from CT scan data: making tools to teach, rehearse, and choose treatment strategies.
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Rapid prototyping to create vascular replicas from CT scan data: making tools to teach, rehearse, and choose treatment strategies.

机译：快速原型设计从CT扫描数据中创建血管副本：制作教学，排练和选择治疗策略的工具。

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Our goal was to develop and prove the accuracy of a system that would allow us to re-create live patient arterial pathology. Anatomically accurate replicas of blood vessels could allow physicians to teach and practice dangerous interventional techniques and might also be used to gather basic physiologic information. The preparation of replicas has, until now, depended on acquisition of fresh cadaver material. Using rapid prototyping, it should be able to replicate vascular pathology in a live patient. We obtained CT angiographic scan data from two patients with known arterial abnormalities. We took such data and, using proprietary software, created a 3D replica using a commercially available rapid prototyping machine. From the prototypes, using a lost wax technique, we created vessel replicas, placed those replicas in the CT scanner, then compared those images with the original scans. Comparison of the images made directly from the patient and from the replica showed that with each step, the relationships were maintained, remaining within 3% of the original, but some smoothing occurred in the final computer manipulation. From routinely obtainable CT angiographic data, it is possible to create accurate replicas of human vascular pathology with the aid of commercially available stereolithography equipment. Visual analysis of the images appeared to be as important as the measurements. With 64 and 128 slice detector scanners becoming available, acquisition times fall enough that we should be able to model rapidly moving structures such as the aortic root.
机译：我们的目标是开发和证明系统的准确性，使我们能够重新创造活患者动脉病理学。血管的解剖学准确的复制品可以允许医生教导和实践危险的介入技术，并且也可以用于收集基本的生理信息。直到现在，复制品的制备取决于收购新鲜的尸体材料。使用快速原型设计，它应该能够在实时患者中复制血管病理学。我们从两个已知的动脉异常患者获得CT血管造影扫描数据。我们采取了这样的数据，使用专有软件，使用市售的快速原型机创建了3D副本。从原型，使用丢失的蜡技术，我们创建了船只副本，将这些副本放在CT扫描仪中，然后将这些图像与原始扫描进行比较。从患者和复制品中直接进行的图像的比较显示，随着每个步骤，保持关系，剩余的份量在原件的3％内，但在最终的计算机操作中发生了一些平滑。从常规可获得的CT血管造影数据中，借助于市售立体刻度设备可以创建人体血管病理学的准确性复制品。图像的视觉分析似乎与测量一样重要。使用64和128片探测器扫描仪成为可用的，获取时间足以使我们能够建模快速移动诸如主动脉根的结构。

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