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首页> 外文会议>Conference on Advanced Biomedical and Clinical Diagnostic and Surgical Guidance Systems >Direct ultrasound to video registration using photoacoustic markers from a single image pose
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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直接超声波到视频注册

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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：视频和其他成像模式的融合在现代外科情景中是常见的，以提供附加信息的外科医生。这样做需要使用介入引导设备和手术导航系统来注册彼此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的立体声系统注册超声波。以前的工作表明，光声标记可用于注册三维超声，其视频导致目标登记误差低于当前可用系统。光声标记是投影到某些表面上的非共线激光斑点。它们可以同时通过立体机系统和超声音量同时可视化，因为光声效应。这项工作用单个超声图像姿势取代了三维超声音量。虽然超声音量提供比超声图像更多的信息，但它的缺点是更高的成本和较慢的采集率。然而，通常，难以使用三维空间数据注册二维。我们建议使用凸阵列超声换能器观看的光声标记。每个光声标记波前提供有关其高位位置的信息，导致三维空间数据。该开发增强了这种方法，因为凸阵传感器在外科手术实践中比三维传感器更常见。在合成幻影上证明了这项工作。该实验的结果目标登记误差为2.47mm，标准偏差为1.29mm，与当前可用系统相当。

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