Tracking multiple surgical instruments in a near-infrared optical system

IF 1.5 4区医学 Q3 SURGERY

Computer Assisted Surgery Pub Date : 2016-01-01 DOI:10.1080/24699322.2016.1184312

Ken Cai, Rongqian Yang, Qinyong Lin, Zhigang Wang

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引用次数: 13

Abstract

Abstract Surgical navigation systems can assist doctors in performing more precise and more efficient surgical procedures to avoid various accidents. The near-infrared optical system (NOS) is an important component of surgical navigation systems. However, several surgical instruments are used during surgery, and effectively tracking all of them is challenging. A stereo matching algorithm using two intersecting lines and surgical instrument codes is proposed in this paper. In our NOS, the markers on the surgical instruments can be captured by two near-infrared cameras. After automatically searching and extracting their subpixel coordinates in the left and right images, the coordinates of the real and pseudo markers are determined by the two intersecting lines. Finally, the pseudo markers are removed to achieve accurate stereo matching by summing the codes for the distances between a specific marker with the other two markers on the surgical instrument. Experimental results show that the markers on the different surgical instruments can be automatically and accurately recognized. The NOS can accurately track multiple surgical instruments.

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在近红外光学系统中跟踪多个手术器械

手术导航系统可以帮助医生进行更精确、更有效的手术，避免各种事故的发生。近红外光学系统(NOS)是外科导航系统的重要组成部分。然而，在手术过程中使用了几种手术器械，有效地跟踪它们是具有挑战性的。提出了一种基于两条相交线和手术器械编码的立体匹配算法。在我们的NOS中，手术器械上的标记可以被两个近红外摄像机捕获。在左右图像中自动搜索提取其亚像素坐标后，由两条相交线确定真实标记点和伪标记点的坐标。最后，去除伪标记，通过将特定标记与手术器械上其他两个标记之间的距离的代码相加来实现精确的立体匹配。实验结果表明，该方法能够自动准确地识别不同手术器械上的标记。NOS能准确跟踪多种手术器械。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Computer Assisted Surgery Medicine-Surgery

CiteScore

2.30

自引率

0.00%

发文量

审稿时长

10 weeks

期刊介绍： omputer Assisted Surgery aims to improve patient care by advancing the utilization of computers during treatment; to evaluate the benefits and risks associated with the integration of advanced digital technologies into surgical practice; to disseminate clinical and basic research relevant to stereotactic surgery, minimal access surgery, endoscopy, and surgical robotics; to encourage interdisciplinary collaboration between engineers and physicians in developing new concepts and applications; to educate clinicians about the principles and techniques of computer assisted surgery and therapeutics; and to serve the international scientific community as a medium for the transfer of new information relating to theory, research, and practice in biomedical imaging and the surgical specialties. The scope of Computer Assisted Surgery encompasses all fields within surgery, as well as biomedical imaging and instrumentation, and digital technology employed as an adjunct to imaging in diagnosis, therapeutics, and surgery. Topics featured include frameless as well as conventional stereotactic procedures, surgery guided by intraoperative ultrasound or magnetic resonance imaging, image guided focused irradiation, robotic surgery, and any therapeutic interventions performed with the use of digital imaging technology.