کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5491438 | 1524999 | 2017 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Inter-vender and test-retest reliabilities of resting-state functional magnetic resonance imaging: Implications for multi-center imaging studies
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کلمات کلیدی
ICAICCBOLDDMNrs-fMRItSNRIndependent component analysis - تجزیه و تحلیل جزء مستقلMagnetic resonance imaging - تصویربرداری رزونانس مغناطیسیResting-state functional magnetic resonance imaging - تصویربرداری رزونانس مغناطیسی عملکرد حالت حالت استراحتfunctional magnetic resonance imaging - تصویرسازی تشدید مغناطیسی کارکردیResting state - حالت استراحتDefault-mode network - شبکه حالت پیش فرضIntra-class correlation coefficient - ضریب همبستگی درونی کلاسReliability - قابلیت اطمینانblood oxygen level-dependent - وابسته به سطح اکسیژن خون
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
This prospective multi-center study aimed to evaluate the inter-vendor and test-retest reliabilities of resting-state functional magnetic resonance imaging (RS-fMRI) by assessing the temporal signal-to-noise ratio (tSNR) and functional connectivity. Study included 10 healthy subjects and each subject was scanned using three 3Â T MR scanners (GE Signa HDxt, Siemens Skyra, and Philips Achieva) in two sessions. The tSNR was calculated from the time course data. Inter-vendor and test-retest reliabilities were assessed with intra-class correlation coefficients (ICCs) derived from variant component analysis. Independent component analysis was performed to identify the connectivity of the default-mode network (DMN). In result, the tSNR for the DMN was not significantly different among the GE, Philips, and Siemens scanners (PÂ =Â 0.638). In terms of vendor differences, the inter-vendor reliability was good (ICCÂ =Â 0.774). Regarding the test-retest reliability, the GE scanner showed excellent correlation (ICCÂ =Â 0.961), while the Philips (ICCÂ =Â 0.671) and Siemens (ICCÂ =Â 0.726) scanners showed relatively good correlation. The DMN pattern of the subjects between the two sessions for each scanner and between three scanners showed the identical patterns of functional connectivity. The inter-vendor and test-retest reliabilities of RS-fMRI using different 3Â T MR scanners are good. Thus, we suggest that RS-fMRI could be used in multicenter imaging studies as a reliable imaging marker.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Magnetic Resonance Imaging - Volume 44, December 2017, Pages 125-130
Journal: Magnetic Resonance Imaging - Volume 44, December 2017, Pages 125-130
نویسندگان
Hyeong Su An, Won-Jin Moon, Jae-Kyun Ryu, Ju Yeon Park, Won Sung Yun, Jin Woo Choi, Geon-Ho Jahng, Jang-Yeon Park,