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首页> 外文期刊>International Journal of Innovative Computing Information and Control >A MEDICAL AUGMENTED-REALITY SYSTEM FOR IMAGE-GUIDED SURGERY USING MARKER-ADDED ICP
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A MEDICAL AUGMENTED-REALITY SYSTEM FOR IMAGE-GUIDED SURGERY USING MARKER-ADDED ICP

机译：使用添加了MARK的ICP进行外科手术的医学增强型可靠性系统

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摘要

Image-to-physical registration is critical for reliable anatomical information mapping and spatial guidance in image-guided surgery (IGS) systems. Conventional stereotactic frame-based or fiducial-based approaches provide accurate registration but are not patient-friendly. This study proposes a frameless cranial IGS system that uses computer vision techniques to replace the frame or fiducials by with the natural features of the patient. To perform a cranial surgery with the proposed system, the facial surface of the patient is first reconstructed by stereo vision. Accuracy is ensured by capturing parallel-line patterns projected from a calibrated LCD projector. Meanwhile, another facial surface is reconstructed from preoperative CT images of the patient. A proposed Marker-added ICP algorithm (M-ICP) is then used to register the two facial-data sets, which brings the anatomical information from the CT images to the physical space. Compared with the adaptive ICP algorithm [8], experimental results reveal that the M-ICP algorithm is more practical and the registration accuracy is under 3-mm target registration error. Moreover, optical-based spatial digitizing devices can be integrated to further enhance surgical navigation. Anatomical information or image-guided surgical landmarks can be projected onto the patient by the projector to obtain an immersive augmented-reality environment.
机译：图像到物理配准对于图像引导手术（IGS）系统中可靠的解剖信息映射和空间引导至关重要。常规的基于立体定向的基于帧或基于基准的方法提供了准确的配准，但并不友好。这项研究提出了一种无框架的颅骨IGS系统，该系统使用计算机视觉技术以患者的自然特征代替框架或基准。为了用所提出的系统执行颅骨手术，首先通过立体视觉重建患者的面部表面。通过捕获从校准的LCD投影仪投射的平行线图案，可以确保准确性。同时，从患者的术前CT图像重建另一个面部表面。然后，使用提出的添加标记的ICP算法（M-ICP）来注册两个面部数据集，从而将来自CT图像的解剖信息带到物理空间。与自适应ICP算法相比[8]，实验结果表明，M-ICP算法更实用，套准精度在3mm目标套准误差以下。此外，可以集成基于光学的空间数字化设备以进一步增强手术导航。投影仪可以将解剖学信息或图像引导的手术界标投影到患者身上，以获得沉浸式增强现实环境。

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