Automatic Tracking of Region of Interest in Sonograms Using Respiratory Information
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概要
- 論文の詳細を見る
In heavy ion radiation therapy for cancer, tracking the region of interest (ROI) is important in order to monitor the position of the treatment target, which varies with respect to respiration, during therapy. We previously proposed a method to compute the optical flow, which is a 2-D velocity field, and the locus of the ROI in the internal organs using the optical flow and its reliability. In the present work, this locus is assumed to be prior knowledge and an on-line tracking method of the ROI is proposed. In this method, the ROI position is predicted using the estimated locus, and the template matching technique using the respiratory information is applied. The locus is then updated using the template matching result obtained via the Kalman filter. The effectiveness and reliability of this method are confirmed through real image experiments.
- Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
- 2003-05-15
著者
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Moriya Tadashi
Department Of Electrical Engineering Tokyo Metropolitan University
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Minagawa Akihiro
Department Of Electrical Engineering Tokyo Metropolitan University
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Minohara Shinichi
National Institute Of Radiological Sciences
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Tagawa Norio
Depart. Of Mechanical Engineering High Technology Research Center Kansai University
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Minagawa Akihiro
Department of Electrical Engineering, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji-shi, Tokyo 192-0397, Japan
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Moriya Tadashi
Department of Electrical Engineering, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji-shi, Tokyo 192-0397, Japan
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Minohara Shinichi
National Institute of Radiological Sciences, 4-9-1 Anagawa, Inage-ku, Chiba-shi 263-8555, Japan
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Osanai Yoji
Department of Electrical Engineering, Tokyo Metropolitan University, 1-1 Minami-Osawa, Hachioji-shi, Tokyo 192-0397, Japan
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