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Proceedings Paper

Automatic real-time tracking of fetal mouth in fetoscopic video sequence for supporting fetal surgeries
Author(s): Rong Xu; Tianliang Xie; Jun Ohya; Bo Zhang; Yoshinobu Sato; Masakatsu G. Fujie
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Paper Abstract

Recently, a minimally invasive surgery (MIS) called fetoscopic tracheal occlusion (FETO) was developed to treat severe congenital diaphragmatic hernia (CDH) via fetoscopy, by which a detachable balloon is placed into the fetal trachea for preventing pulmonary hypoplasia through increasing the pressure of the chest cavity. This surgery is so dangerous that a supporting system for navigating surgeries is deemed necessary. In this paper, to guide a surgical tool to be inserted into the fetal trachea, an automatic approach is proposed to detect and track the fetal face and mouth via fetoscopic video sequencing. More specifically, the AdaBoost algorithm is utilized as a classifier to detect the fetal face based on Haarlike features, which calculate the difference between the sums of the pixel intensities in each adjacent region at a specific location in a detection window. Then, the CamShift algorithm based on an iterative search in a color histogram is applied to track the fetal face, and the fetal mouth is fitted by an ellipse detected via an improved iterative randomized Hough transform approach. The experimental results demonstrate that the proposed automatic approach can accurately detect and track the fetal face and mouth in real-time in a fetoscopic video sequence, as well as provide an effective and timely feedback to the robot control system of the surgical tool for FETO surgeries.

Paper Details

Date Published: 12 March 2013
PDF: 6 pages
Proc. SPIE 8671, Medical Imaging 2013: Image-Guided Procedures, Robotic Interventions, and Modeling, 86710Z (12 March 2013); doi: 10.1117/12.2002803
Show Author Affiliations
Rong Xu, Waseda Univ. (Japan)
Tianliang Xie, Waseda Univ. (Japan)
Jun Ohya, Waseda Univ. (Japan)
Bo Zhang, Waseda Univ. (Japan)
Yoshinobu Sato, Osaka Univ. (Japan)
Masakatsu G. Fujie, Waseda Univ. (Japan)

Published in SPIE Proceedings Vol. 8671:
Medical Imaging 2013: Image-Guided Procedures, Robotic Interventions, and Modeling
David R. Holmes III; Ziv R. Yaniv, Editor(s)

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