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Direct ultrasound to video registration using photoacoustic markers from a single image pose

机译:使用来自单个图像姿势的光声标记将超声直接引导到视频配准

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摘要

Fusion of video and other imaging modalities is common in modern surgical scenarios to provide surgeons with additional information. Doing so requires the use of interventional guidance equipment and surgical navigation systems to register the tools and devices used in surgery with each other. In this work, we focus explicitly on registering ultrasound with a stereocamera system using photoacoustic markers. Previous work has shown that photoacoustic markers can be used to register three-dimensional ultrasound with video resulting in target registration errors lower than the current available systems. Photoacoustic markers are non-collinear laser spots projected onto some surface. They can be simultaneously visualized by a stereocamera system and in an ultrasound volume because of the photoacoustic effect. This work replaces the three-dimensional ultrasound volume with images from a single ultrasound image pose. While an ultrasound volume provides more information than an ultrasound image, it has its disadvantages such as higher cost and slower acquisition rate. However, in general, it is difficult to register two-dimensional with three-dimensional spatial data. We propose the use of photoacoustic markers viewed by a convex array ultrasound transducer. Each photoacoustic markers wavefront provides information on its elevational position, resulting in three-dimensional spatial data. This development enhances this methods practicality as convex array transducers are more common in surgical practice than three-dimensional transducers. This work is demonstrated on a synthetic phantom. The resulting target registration error for this experiment was 2.47mm and the standard deviations was 1.29mm, which is comparable to current available systems.
机译:视频和其他成像方式的融合在现代手术场景中很常见,可以为外科医生提供更多信息。这样做需要使用介入指导设备和手术导航系统来相互注册手术中使用的工具和设备。在这项工作中,我们明确地专注于使用光声标记在立体相机系统中注册超声。先前的工作表明,光声标记可用于将三维超声与视频配准,从而导致目标配准误差低于当前可用系统。光声标记是投射在某些表面上的非共线激光点。由于具有光声效应,它们可以同时通过立体摄像机系统和超声体积可视化。这项工作用来自单个超声图像姿势的图像替代了三维超声体积。尽管超声体积比超声图像提供更多的信息,但它具有诸如较高的成本和较慢的采集速率的缺点。但是,一般来说,很难用二维空间数据来注册二维。我们建议使用通过凸阵列超声换能器查看的光声标记。每个光声标记波前都会提供有关其高程位置的信息,从而产生三维空间数据。这种发展增强了该方法的实用性,因为凸面阵列换能器在外科手术实践中比三维换能器更常见。这项工作是在合成幻像上演示的。此实验产生的目标配准误差为2.47mm,标准偏差为1.29mm,与当前可用的系统相当。

著录项

  • 来源
  • 会议地点 San Francisco CA(US)
  • 作者单位

    Department of Computer Science, The Johns Hopkins University, 3400 N. Charles St., Baltimore MD 21218, USA;

    Department of Electrical and Computer Engineering, The Johns Hopkins University, 3400 N. Charles St., Baltimore MD 21218, USA;

    Department of Computer Science, The Johns Hopkins University, 3400 N. Charles St., Baltimore MD 21218, USA;

    Department of Surgery, The University of Texas Southwestern Medical Center, 5323 Harry Hines Blvd., Dallas TX 75390, USA;

    Department of Electrical and Computer Engineering, The Johns Hopkins University, 3400 N. Charles St., Baltimore MD 21218, USA;

    Department of Computer Science, The Johns Hopkins University, 3400 N. Charles St., Baltimore MD 21218, USA;

    Department of Computer Science, The Johns Hopkins University, 3400 N. Charles St., Baltimore MD 21218, USA,Department of Electrical and Computer Engineering, The Johns Hopkins University, 3400 N. Charles St., Baltimore MD 21218, USA,Department of Radiology, The Johns Hopkins Medical Institute, 1800 Orleans St., Baltimore MD 21287, USA;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Clinical Ultrasound; Video Registration; Photoacoustic Imaging; Planning and Image Guidance of Interventions;

    机译:临床超声;视频注册;光声成像;干预的计划和图像指导;

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