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Proceedings Paper

Haustral fold registration in CT colonography and its application to registration of virtual stretched view of the colon
Author(s): Eiichiro Fukano; Masahiro Oda; Takayuki Kitasaka; Yasuhito Suenaga; Tetsuji Takayama M.D.; Hirotsugu Takabatake M.D.; Masaki Mori M.D.; Hiroshi Natori M.D.; Shigeru Nawano M.D.; Kensaku Mori
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Paper Abstract

This paper proposes a method for making correspondence between the supine and the prone positions of the colon in CT volumes. In CT colonography, two CT volumes in the supine and the prone positions are often taken to observe the whole colonic wall by comparing them. However, the colonic wall is soft and changes its shape when a patient changes positions. Therefore, physicians need to take the positional relations into account when comparing the two CT volumes. Calculation of the positional relations between the two positions of the colon can reduce load of physicians. A large number of haustral folds exists in the colon and the order doesn't change even when a patient change positions. Therefore, haustral folds are suitable for registering the supine and the prone positions of the colon. We also find sharply bending points of the centerline of the colon as landmarks for brief registration. The precise registration is then performed by finding positional correspondence of the haustral folds in the supine and the prone positions. In correspondence search, we first find the correspondence among long haustral folds, followed by small haustral folds. As the result of experiment using six pairs of 3D abdominal CT volumes, 65.1% of the correspondence of large haustral folds were correct, 25.6% were incorrect, and 9.3% could not be judged. On the other hand, 13.3% of the correspondence of small haustral folds were correct, 42.9% were incorrect, and 32.7% could not be judged.

Paper Details

Date Published: 9 March 2010
PDF: 11 pages
Proc. SPIE 7624, Medical Imaging 2010: Computer-Aided Diagnosis, 762420 (9 March 2010); doi: 10.1117/12.844600
Show Author Affiliations
Eiichiro Fukano, Nagoya Univ. (Japan)
Masahiro Oda, Nagoya Univ. (Japan)
Takayuki Kitasaka, Nagoya Univ. (Japan)
Aichi Institute of Technology (Japan)
Yasuhito Suenaga, Nagoya Univ. (Japan)
Aichi Institute of Technology (Japan)
Tetsuji Takayama M.D., Univ. of Tokushima (Japan)
Hirotsugu Takabatake M.D., Minami Sanjyo Hospital (Japan)
Masaki Mori M.D., Sapporo Kosei Hospital (Japan)
Hiroshi Natori M.D., Keiwakai Nishioka Hospital (Japan)
Shigeru Nawano M.D., International Univ. of Health and Welfare (Japan)
Kensaku Mori, Nagoya Univ. (Japan)

Published in SPIE Proceedings Vol. 7624:
Medical Imaging 2010: Computer-Aided Diagnosis
Nico Karssemeijer; Ronald M. Summers, Editor(s)

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