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Abstract #2407

Knowledge-Based Automatic Slice-Alignment Method in Cardiac Magnetic Resonance Imaging for Aortic Valve Evaluation: Comparison with Inter-observer Error

Rieko Ishimura 1 , Kenichi Yokoyama 1 , Toshiya Kariyasu 1 , Tatsuya Yoshioka 2 , Isao Miyazaki 2 , Shuhei Nitta 3 , Taichirou Shiodera 3 , Tomoyuki Takeguti 3 , Shigehide Kuhara 4 , Kuninori Kobayashi 5 , and Toshiaki Nitatori 1

1 Department of Radiology, Kyorin University School of Medicine, Mitaka-shi, Tokyo, Japan, 2 Department of Radiology, Kyorin University Hospital, Mitaka-shi, Tokyo, Japan, 3 Toshiba Corporation R&D Center, Tokyo, Japan, 4 Toshiba Medical Systems Corporation, Tochigi, Japan, 5 Department of Medical Radiological Technology, Faculty of Health Science, Kyorin University, Hachiouji-shi, Tokyo, Japan

Cardiac magnetic resonance imaging is also very useful for functional evaluation of the cardiac valves such as the aortic valve and pulmonary valve because it can be used to examine the valve openings and their shapes and to calculate flow rates based on the flow curves obtained using the phase contrast method. We investigated the usefulness of the automatic slice alignment in detecting the aortic valve planes. The knowledge-based automatic slice-alignment method described here permits the aortic valve reference planes, which are difficult to determine using the conventional method, to be detected quickly and easily.

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