Incorporation of surface-based deformations for updating images intraoperatively
Incorporation of surface-based deformations for updating images intraoperatively
复制标题
结合基于表面的变形来更新术中图像
DOI：
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发表时间：
2001
期刊：
影响因子：
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通讯作者：
Keith D. Paulsen
中科院分区：
文献类型：
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作者：
M. Miga;J. Michael Fitzpatrick;Robert L. Galloway, Jr.;Keith D. Paulsen
常见的手术事件如脑凹陷、药物相互作用、回缩和切除会加剧患者与图像的错位。纠正这种错误配准的一种策略是将计算模型与低成本术中获取的数据（例如表面跟踪和联合配准超声）结合使用，以变形术前成像数据，以解释手术室的动作。在本文中，我们提供了来自皮质表面扫描系统的初步数据，并研究了基于表面的信息对模型更新的影响。初步数据使用3D激光扫描技术结合迭代最近点（ICP）算法来记录和跟踪幻影和离体数据。在重力引起的变形的临床例子中，提出了模拟来分析直接使用位移数据与建模潜在的物理负载。结果显示，在地下变形场的显著差异，强调手术负荷的性质（即表面或身体的力量）必须仔细区分，以准确地更新图像。此外，结果表明，应用表面位移来更新图像体积必须与变形的物理起源一致，而不是在直接插值意义上应用。
Patient-to-image misalignment becomes exacerbated by common surgical events such as brain sag, drug interactions, retraction, and resection. One strategy to remedy this mis- registration is to employ computational models in conjunction with low-cost intraoperatively-acquired data (e.g. surface tracking, and co-registered ultrasound) to deform preoperative imaging data to account for OR actions. In this paper, we present preliminary data from a cortical surface scanning system and study the impact of surface- based information on model-updates. Preliminary data is presented using a 3D laser scanning technology in conjunction with an iterative closest point (ICP) algorithm to register and track phantom and ex vivo data. Simulations are presented to analyze the direct use of displacement data versus modeling the underlying physical load in a clinical example of gravity-induced deformation. Results demonstrate dramatic differences in subsurface deformation fields highlighting that the nature of the surgical load (i.e. surface or body force) must be thoughtfully discriminated to accurately update images. Furthermore, the results suggest that the application of surface displacements to update image volumes must be consistent with the physical origin of deformation rather than applied in a direct interpolative sense.
影响因子：
4.8
作者：
D. Roberts;M. Miga;A. Hartov;S. Eisner;J. Lemery;F. Kennedy;K. Paulsen
通讯作者：
D. Roberts;M. Miga;A. Hartov;S. Eisner;J. Lemery;F. Kennedy;K. Paulsen
影响因子：
4.8
作者：
Black, PM;Moriarty, T;Jolesz, FA
通讯作者：
Jolesz, FA