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Abstract #1343

Inter-vender and Inter-session Reliability of Resting State Functional Magnetic Resonance Imaging (rsfMRI): Implications for Multicenter Studies

Won-Jin Moon 1 , Hyeong Su An 2 , Jae-Kyun Ryu 3 , Ju Yeon Park 4 , Won Sung Yun 4 , Jin Woo Choi 4 , Geon-Ho Jahng 5 , and Jang-Yeon Park 6

1 Department of Radiology, Konkuk University School of Medicine, Seoul, Seoul, Korea, 2 1. Department of Radiology, Konkuk University School of Medicine, Seoul, Korea, 3 2. Department of Biomedical Engineering, Konkuk University, Seoul, Korea, 4 Konkuk University School of Medicine, Seoul, Korea, 5 Kyunghee University, Seoul, Korea, 6 Konkuk University, Seoul, Korea

This study evaluated inter-vender reliability and inter-session reliability of rsfMRI by using temporal signal-to-noise ratio (tSNR) and connectivity of default-mode network (DMN).Although tSNR of rsfMRI was relatively good-to-excellent on three different 3-T MRI (from three different venders) on two different occasions, some inter-vender and inter-session differences in connectivity of the DMN were observed. Therefore, researchers using rsfMRI should be aware of these limitations especially in case of longitudinally designed multicenter studies.

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