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Abstract #1428

An Automatic Slice-Alignment Method for Both Left and Right Ventricular Analysis in Cardiac Magnetic Resonance Imaging

Shuhei Nitta1, Taichiro Shiodera1, Tomoyuki Takeguchi1, Shigehide Kuhara2, Kenichi Yokoyama3, Rieko Ishimura3, Toshiaki Nitatori3

1Corporate Research & Development Center, Toshiba Corporation, Kawasaki, Kanagawa, Japan; 2MRI Systems Division, Toshiba Medical Systems Corporation, Otawara, Tochigi, Japan; 3Department of Radiology, Faculty of Medicine, Kyorin University, Mitaka, Tokyo, Japan

Automatic slice alignment is important in cardiac MR examinations. However, previous work has focused on only left ventricular planes. In this paper, we propose a new knowledge-based automatic slice-alignment method which can detect six left ventricular planes and four right ventricular planes simultaneously using ECG-gated axial multislice images. The results of the present study showed that the proposed method successfully detected all planes in 55 datasets from 23 healthy volunteers. The processing time was about 2.5 seconds on a 3.0-GHz CPU. The results also showed that the proposed method is beneficial to both operators and patients.

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Keywords

accuracy achieving acquisition addition alignment anatomical angular annotations anterior apex approximately audience automatic axial axis beneficial board breath cardiac cardiovascular chamber cine combined conditions corporate corporation covering datasets detect detected detection detects determined develop development deviation division easier eight entire error errors evaluate even examination examinations example existing experimental faculty feature force free gated healthy heart hold horizontal improvement input interval involved japan journal knowledge long manual matrix measured medical medicine operation operators orientations outflow patients planning positions precession previous processing proposed protocols quick radiologists radiology recognition reproducibility require researchers respectively scanner scanning short shorter simultaneously slice slices society speed standardized steady successfully systems target task technologists though tool tract trustees valuable valve vector ventricular vertical view views volunteer volunteers wall