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Abstract #1425

Feasibility Study of Automatic Motion Probe Setting Method for Cardiovascular Magnetic Resonance Imaging

Shigehide Kuhara1, Shuhei Nitta2, Taichiro Shiodera2, Tomoyuki Takeguchi2, Kenichi Yokoyama3, Rieko Ishimura3, Toshiaki Nitatori3

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

Manual setting of the motion probe for whole-heart MR imaging with motion correction to obtain high-resolution images during free breathing remains a time-consuming task, even for expert technologists. We propose an automatic motion probe setting method employing an atlas-based segmentation technique to detect the heart region and the position of the top of the right hemidiaphragm at the same time for motion probe setting. Clinical evaluation showed that the position of the top of the right hemidiaphragm could be detected by our method almost as accurately as by manual annotation, demonstrating the usefulness of our method in the clinical setting.

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Keywords

able according accuracy accurately achieve acquisition actual addition almost analyzing anatomical annotation annotations approximately atlas audience automatic breath breathing cardiovascular chest clinical conditions considered consuming coronal corporate corporation correction corresponds covering cross datasets detect detected detection determined development diagnostic distance effective employing employs encode entire error errors euclidean evaluate evaluation even example expected expert faculty fast feasibility field free gated healthy heart hold improve indicate input inter involved japan longitudinal manual measured medical medicine model motion motions observer optimal overlapping paper passing patient patients plan position positioned positions prepared probe procedures processing propose proposed radiologists radiology readout registered remains researchers resolution respectively scanner scanning sections segmentation segmented selected setting simplifying slab slice smaller steps successfully sufficient system systems target task technologists thread tops useful volume volunteers whole