Enhancement of accuracy in shape sensing of surgical needles using optical frequency domain reflectometry in optical fibers
Enhancement of accuracy in shape sensing of surgical needles using optical frequency domain reflectometry in optical fibers
复制标题
DOI：
10.1364/boe.8.002210
复制
发表时间：
2017-04-01
影响因子：
3.4
通讯作者：
Kashyap, Raman
中科院分区：
文献类型：
--
作者：
Parent, Francois;Loranger, Sebastien;Kashyap, Raman
提出了一种基于分布式应变传感的光学频域反射仪(OFDR)提高手术针形跟踪精度的新方法。通过使用具有高散射特性的光纤来提高精度。近年来，利用光纤的应变传感特性对手术工具进行形状跟踪已受到越来越多的关注。该领域的研究大多采用光纤布拉格光栅(FBG)，它可以作为离散型或准分布式的应变传感器。通过使用真正的分布式传感方法(OfDR)，初步结果表明，可达到的精度与文献中使用FBG传感器进行跟踪应用的精度相当(类似于1 mm)。我们提出了一种技术，将我们的准确度提高了47%，使用紫外线曝光的光纤，与未曝光的标准单模光纤相比，具有更高的光散射。改进实验装置将提高OF DR形状跟踪的准确性，并将对临床应用做出重大贡献。(C)2017年美国光学学会
We demonstrate a novel approach to enhance the precision of surgical needle shape tracking based on distributed strain sensing using optical frequency domain reflectometry (OFDR). The precision enhancement is provided by using optical fibers with high scattering properties. Shape tracking of surgical tools using strain sensing properties of optical fibers has seen increased attention in recent years. Most of the investigations made in this field use fiber Bragg gratings (FBG), which can be used as discrete or quasi-distributed strain sensors. By using a truly distributed sensing approach (OFDR), preliminary results show that the attainable accuracy is comparable to accuracies reported in the literature using FBG sensors for tracking applications (similar to 1mm). We propose a technique that enhanced our accuracy by 47% using UV exposed fibers, which have higher light scattering compared to un-exposed standard single mode fibers. Improving the experimental setup will enhance the accuracy provided by shape tracking using OFDR and will contribute significantly to clinical applications. (C) 2017 Optical Society of America