Augmented reality navigation system for laparoscopic splenectomy in children based on preoperative CT image using optical tracking device
Augmented reality navigation system for laparoscopic splenectomy in children based on preoperative CT image using optical tracking device
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DOI：
10.1007/s00383-011-3034-x
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发表时间：
2012-04-01
影响因子：
1.8
通讯作者：
Taguchi, Tomoaki
中科院分区：
文献类型：
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作者：
Ieiri, Satoshi;Uemura, Munenori;Taguchi, Tomoaki
在内窥镜手术中，有限的视野和触觉的缺乏限制了外科医生的能力并给外科医生造成压力。因此，强烈建议使用术中导航系统。我们开发了一种基于术前CT成像的增强现实（AR）导航系统。本研究的目的是评估该系统在儿童腹腔镜脾切除术中的实用性、可行性和准确性。我们使用光学跟踪系统进行体积图像和体表标记之间的配准。AR可视化将术前3D CT图像叠加到捕获的腹腔镜实时图像上。该系统应用于6例小儿腹腔镜脾切除术。为了评估配准精度，计算标记位置到容积数据的距离，操作员通过将图像叠加到腹腔镜实时图像上来识别脾动脉和静脉、副脾和胰尾的隐藏血管变异。6例患者的配准准确度分别为5.30 +/- A 0.08、5.71 +/- A 1.70、10.1 +/- A 0.60、18.8 +/- A 3.56、4.06 +/- A 1.71和7.05 +/- A 4.71。该导航系统提供了实时解剖信息，这些信息在没有导航的情况下无法可视化。在临床操作中，配准精度可以接受。
In endoscopic surgery, limited views and lack of tactile sensation restrict the surgeon's abilities and cause stress to the surgeon. Therefore, an intra-operative navigation system is strongly recommended. We developed an augmented reality (AR) navigation system based on preoperative CT imaging. The purpose of this study is to evaluate the usefulness, feasibility, and accuracy of this system using laparoscopic splenectomy in children.Volume images were reconstructed by three-dimensional (3D) viewer application. We used an optical tracking system for registration between volume image and body surface markers. The AR visualization was superimposed preoperative 3D CT images onto captured laparoscopic live images. This system was applied to six cases of laparoscopic splenectomy in children. To evaluate registration accuracy, distances from the marker position to the volume data were calculated.The operator recognized the hidden vascular variation of the splenic artery and vein, accessory spleen, and pancreatic tail by overlaying an image onto a laparoscopic live image. The registration accuracy of six cases was 5.30 +/- A 0.08, 5.71 +/- A 1.70, 10.1 +/- A 0.60, 18.8 +/- A 3.56, 4.06 +/- A 1.71, and 7.05 +/- A 4.71.This navigation system provides real-time anatomical information, which cannot be otherwise visualized without navigation. The registration accuracy was acceptable in clinical operation.