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首页> 外文会议>International Conference on Medical Image Computing and Computer-Assisted Intervention >Towards a Deformable Multi-surface Approach to Ligamentous Spine Models for Predictive Simulation-Based Scoliosis Surgery Planning
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Towards a Deformable Multi-surface Approach to Ligamentous Spine Models for Predictive Simulation-Based Scoliosis Surgery Planning

机译：朝着可变形的多表面方法呈现韧带脊柱模型，用于预测仿真基础脊柱侧凸手术规划

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Scoliosis correction surgery is typically a highly invasive procedure that involves either an anterior or posterior release, which respectively entail the resection of ligaments and bone facets from the front or back of the spine, in order to make it sufficiently compliant to enable the correction of the deformity. In light of progress in other areas of surgery in minimally invasive therapies, orthopedic surgeons have begun envisioning computer simulation-assisted planning that could answer unprecedented what-if questions. This paper presents preliminary steps taken towards simulation-based surgery planning that will provide answers as to how much anterior or posterior release is truly necessary, provided we also establish the amplitude of surgical forces involved in corrective surgery. This question motivates us to pursue a medical image-based anatomical modeling pipeline that can support personalized finite elements simulation, based on models of the spine that not only feature vertebrae and inter-vertebral discs (IVDs), but also descriptive ligament models. This paper suggests a way of proceeding, based on the application of deformable multi-surface Simplex model applied to a CAD-based representation of the spine that makes explicit all spinal ligaments, along with vertebrae and IVDs. It presents a preliminary model-based segmentation study whereby Simplex meshes of CAD vertebrae are registered to the subject's corresponding vertebrae in CT data, which then drives ligament and IVD model registration by aggregation of neighboring vertebral transformations. This framework also anticipates foreseen improvements in MR imaging that could achieve better contrasts in ligamentous tissues in the future.
机译：脊柱侧凸矫正手术通常是一种高度侵入性的程序，涉及前部或后释放，其分别需要从脊柱的前或背面切除韧带和骨头，以使其充分符合能够校正畸形。鉴于在微创疗法中的其他手术领域的进展，矫形外科医生已经开始设想计算机模拟辅助规划，这可能会回答前所未有的什么问题。本文介绍了基于模拟的手术规划所采取的初步步骤，以便我们还建立了矫正手术的手术力的幅度，提供了最佳的前型或后释放的答案。这个问题激发了我们追求基于医学图像的解剖学建模管道，可以基于脊柱的模型来支持个性化的有限元模拟，不仅具有椎骨和椎间椎间盘（IVDS），而且还具有描述性韧带模型。本文提出了一种方法，基于可变形的多表面单纯形模型应用于脊柱的CAD的表示的应用，与椎骨和IVDS一起施加到基于CAD的脊柱。它呈现了基于初步的基于模型的分割研究，由此CAD椎骨的单纯形网状物在CT数据中注册到受试者的相应椎骨，然后通过邻近椎体转化的聚集驱动韧带和IVD模型登记。该框架还预期预见到MR成像的预见，可以在未来韧带组织中达到更好地对比。

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