Imaging Research Laboratories, Robarts ResearchInstitute, University of Western Ontario, London, ON N6A5K8, Canada.
IEEE Trans Biomed Eng. 2010 Sep;57(9):2209-18. doi: 10.1109/TBME.2010.2050886. Epub 2010 May 27.
Minimizing invasiveness associated with cardiac procedures has led to limited visual access to the target tissues. To address these limitations, we have developed a visualization environment that integrates interventional ultrasound (US) imaging with preoperative anatomical models and virtual representations of the surgical instruments tracked in real time. In this paper, we present a comprehensive evaluation of our model-enhanced US-guidance environment by simulating clinically relevant interventions in vitro . We have demonstrated that model-enhanced US guidance provides a clinically desired targeting accuracy better than 3-mm rms and maintains this level of accuracy even in the case of image-to-patient misalignments that are often encountered in the clinic. These studies emphasize the benefits of integrating real-time imaging with preoperative data to enhance surgical navigation in the absence of direct vision during minimally invasive cardiac interventions.
为了尽量减少与心脏手术相关的侵袭性操作，导致对目标组织的可视访问受到限制。为了解决这些限制，我们开发了一种可视化环境，该环境将介入性超声 (US) 成像与术前解剖模型以及实时跟踪的手术器械的虚拟表示相结合。在本文中，我们通过在体外模拟临床相关干预来对我们的模型增强 US 引导环境进行全面评估。我们已经证明，模型增强的 US 引导提供了临床所需的目标精度优于 3 毫米均方根，并且即使在临床上经常遇到的图像与患者之间的配准错误的情况下，也能保持这种精度水平。这些研究强调了将实时成像与术前数据集成以增强在微创心脏介入中缺乏直接视觉时的手术导航的好处。
