Characterization and in-vivo evaluation of a multi-resolution foveated laparoscope for minimally invasive surgery.
Characterization and in-vivo evaluation of a multi-resolution foveated laparoscope for minimally invasive surgery.
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DOI：
10.1364/boe.5.002548
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发表时间：
2014-08-01
影响因子：
3.4
通讯作者：
Nguyen M
中科院分区：
文献类型：
--
作者：
Qin Y;Hua H;Nguyen M
最先进的腹腔镜缺乏同时捕获高放大率和广角图像的能力，这在临床实践中需要用于细节的特写视图和用于定向的广角概览时带来了挑战。提出了一种多分辨率中心凹腹腔镜（MRFL），它可以为外科医生提供高放大倍数的特写和广角图像，以解决最先进的外科腹腔镜的局限性。在本文中，我们提出了整体系统设计，从临床和光学系统的角度沿着一组实验来表征我们的原型系统的光学性能，并描述了我们的初步体内评价的原型与猪模型。实验结果表明，在最佳工作距离为120 mm时，高倍率探头的分辨率为6.35lp/mm，成像范围为53 × 40 mm ~ 2;广角探头提供160 × 120 mm 2的手术区域覆盖范围，分辨率为2.83lp/mm。体内评价表明，MRFL在提高腹腔镜手术的安全性和有效性方面具有很大的临床应用潜力。
The state-of-the-art laparoscope lacks the ability to capture high-magnification and wide-angle images simultaneously, which introduces challenges when both close- up views for details and wide-angle overviews for orientation are required in clinical practice. A multi-resolution foveated laparoscope (MRFL) which can provide the surgeon both high-magnification close-up and wide-angle images was proposed to address the limitations of the state-of-art surgical laparoscopes. In this paper, we present the overall system design from both clinical and optical system perspectives along with a set of experiments to characterize the optical performances of our prototype system and describe our preliminary in-vivo evaluation of the prototype with a pig model. The experimental results demonstrate that at the optimum working distance of 120mm, the high-magnification probe has a resolution of 6.35lp/mm and image a surgical area of 53 × 40mm2; the wide-angle probe provides a surgical area coverage of 160 × 120mm2 with a resolution of 2.83lp/mm. The in-vivo evaluation demonstrates that MRFL has great potential in clinical applications for improving the safety and efficiency of the laparoscopic surgery.