Image mapping of untracked free‐hand endoscopic views to an ultrasound image‐constructed 3D placenta model. Issue 2 (7th May 2014)

• Record Type: Journal Article
• Authors: Yang, Liangjing; Wang, Junchen; Kobayashi, Etsuko; Ando, Takehiro; Yamashita, Hiromasa; Sakuma, Ichiro; Chiba, Toshio
• Is Part Of: International journal of medical robotics and computer assisted surgery. Volume 11:Issue 2(2015)
• Page Start: 223
• Page End: 234
• Publication Date: 2014-05-07
• Subjects: Robotics in medicine -- Periodicals; Surgery -- Technological innovations -- Periodicals; Imaging systems in medicine -- Periodicals; 617.90285
• DOI: 10.1002/rcs.1592
• Languages: English
• ISSNs: 1478-5951

Abstract

<abstract abstract-type="main"> <title>Abstract</title> <sec id="rcs1592-sec-0001" sec-type="section"> <title>Background</title> <p>This study presents a tracker‐less image‐mapping framework for surgical navigation motivated by the clinical need for intuitive visual guidance during minimally invasive fetoscopic surgery.</p> </sec> <sec id="rcs1592-sec-0002" sec-type="section"> <title>Methods</title> <p>A navigation framework mapping 2D endoscopic vision to a 3D ultrasound image model is proposed. This maps an endoscopic image onto a 3D placenta model through a one‐time ultrasound image‐based localization method followed by a series of concurrent image alignments and texture mapping of the untracked endoscopic video stream.</p> </sec> <sec id="rcs1592-sec-0003" sec-type="section"> <title>Results</title> <p>The mean absolute error of our ultrasound image‐based localization method was (1.63 mm, 0.93°). The simulation analysis reveals an upper bound mapping performance with a mean error of 1.53 mm. In a phantom experiment, the overall mapping performance is close to this accuracy and achieves a mean absolute error of 2 mm, thereby supporting the feasibility of this method.</p> </sec> <sec id="rcs1592-sec-0004" sec-type="section"> <title>Conclusion</title> <p>This novel integration of intraoperative visual guidance has potential contributions to innovative fusions of image guidance techniques for effective navigation in minimally invasive fetoscopic surgery. Copyright © 2014 John Wiley & Sons, Ltd.</p> </sec> </abstract>