Real-time Visualized Vessel and Catheter Path Reconstruction for Intravascular Intervention
Minimally invasive intravascular intervention is performed with the aid of catheters for therapy.We apply intra-operative freehand ultrasound and tracked catheter for guiding intravascular intervention.Current freehand 3D ultrasound techniques separate the scanning or acquisition step from the visualization step.This leads to no feedback during image acquisition.The reconstruction quality is highly dependent on scanning experience.A low-quality imaging even causes re-scanning and prolongs the time of image acquisition.In addition,the catheter path is important information implying the skeleton of the target vessel.It also helps doctor understand the catheter position relative to vessels for reducing the risk of vessel injuries.We developed a catheter navigation system that will allow real-time visualizing the scanned vessel volume as well as catheter path.The system consists of a freehand US for vessel reconstruction,an electromagnetic tracking system for locating the position and orientation of the ultrasound probe and catheter tip,a video frame grabber for capturing ultrasound frames,and a typical PC for performing real-time reconstruction and scene rendering.The system incorporates novel methods for visualizing data acquisition of image guided intravascular intervention in real time.This paper reports on current work in progress,and focuses on methods to achieving real-time visualizing reconstructions of freehand 3D ultrasound and catheter path.We demonstrate the system on a vessel phantom.The results suggest the system could visualize the reconstruction in real-time.
Real-time Freehand ultrasound Visualization catheter path
Kuan Luan Hongen Liao Takashi Ohya Sanghyun Joung Etsuko Kobayashi Ichiro Sakuma
Department of Precision Engineering, Faculty of Engineering, University of Tokyo, Tokyo, Japan Department of Oral and Maxillofacial Surgery, Yokohama City University Graduate School of Medicine,
国际会议
World Congress on Medical Physics and Biomedical Engineering (2012年医学物理及生物医学工程国际会议(IFMBE))
北京
英文
2142-2145
2012-05-26（万方平台首次上网日期，不代表论文的发表时间）