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Abstract #1763

Quiet SWI versus conventional SWI: Radiological evaluation in pediatric patients

Noriko Aida 1 , Kumiko Nozawa 1 , Yuta Fujii 1 , Tetsu Niwa 1 , Koichiro Nomura 1 , Masahiko Sato 2 , Koki Kusagiri 2 , Yasutake Muramoto 2 , Yuichi Suzuki 2 , Katsutoshi Murata 3 , Matthew Nielsen 3 , David Grodzki 4 , and Takayuki Obata 5

1 Radiology, Kanagawa Children's Medical Center, Yokohama, Kanagawa, Japan, 2 Radiological technology, Kanagawa Children's Medical Center, Yokohama, Kanagawa, Japan, 3 Research & Collaboration, Imaging &Therapy System, Siemens Japan, Tokyo, Japan, 4 Magnetic Resonace, Siemens Healthcare, Erlangen, Bavaria, Germany, 5 Research Center for Charged Particle Therapy, National Institute of Radiological Sciences, Chiba, Japan

Clinical efficacy of a prototype quiet SWI (qSWI) was prospectively evaluated compared to the conventional SWI (cSWI) in 57 sedated pediatric patients. qSWI sequence with optimized gradients was used in order to reduce acoustic noise and it was measured 8.8 dB(A) less than that of cSWI. ICC scores in all evaluated veins for two readers indicated good or moderate agreement. qSWI provided image quality that was almost identical to that of cSWI and it produced less acoustic noise by using slightly more scan time, and could be substituted for cSWI in order to provide gentler scans to pediatric patients.

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