MICCAI 2013 - LNCS 8149-8151

Semi-automated Virtual Unfolded View Generation Method of Stomach from CT Volumes

Masahiro Oda¹, Tomoaki Suito¹, Yuichiro Hayashi², Takayuki Kitasaka³, Kazuhiro Furukawa⁴, Ryoji Miyahara⁴, Yoshiki Hirooka⁵, Hidemi Goto⁴, Gen Iinuma⁶, Kazunari Misawa⁷, Shigeru Nawano⁸, and Kensaku Mori^{2, 1}

¹Graduate School of Information Science, Nagoya University, Japan

²Information and Communications Headquarters, Nagoya University, Japan

³School of Information Science, Aichi Institute of Technology, Japan

⁴Graduate School of Medicine, Nagoya University, Japan

⁵Department of Endoscopy, Nagoya University Hospital, Japan

⁶National Cancer Center, Japan

⁷Aichi Cancer Center, Japan

⁸International University of Health and Welfare Mita Hospital, Japan

Abstract. CT image-based diagnosis of the stomach is developed as a new way of diagnostic method. A virtual unfolded (VU) view is suitable for displaying its wall. In this paper, we propose a semi-automated method for generating VU views of the stomach. Our method requires minimum manual operations. The determination of the unfolding forces and the termination of the unfolding process are automated. The unfolded shape of the stomach is estimated based on its radius. The unfolding forces are determined so that the stomach wall is deformed to the expected shape. The iterative deformation process is terminated if the difference of the shapes between the deformed shape and expected shape is small. Our experiments using 67 CT volumes showed that our proposed method can generate good VU views for 76.1% cases.

Keywords: Stomach, virtual unfolding, CT image

LNCS 8149, p. 332 ff.

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