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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 대한자기공명의과학회 Investigative Magnetic Resonance Imaging Investigative Magnetic Resonance Imaging 제21권 제4호
- 발행연도
- 2017.1
- 수록면
- 223 - 232 (10page)
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초록· 키워드
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Purpose: To report the use of multiband accelerated echo-planar imaging (EPI) for resting-state functional MRI (rs-fMRI) to achieve rapid high temporal resolution at 3T compared to conventional EPI.
Materials and Methods: rs-fMRI data were acquired from 20 healthy right-handed volunteers by using three methods: conventional single-band gradient-echo EPI acquisition (Data 1), multiband gradient-echo EPI acquisition with 240 volumes (Data 2) and 480 volumes (Data 3). Temporal signal-to-noise ratio (tSNR) maps were obtained by dividing the mean of the time course of each voxel by its temporal standard deviation. The resting-state sensorimotor network (SMN) and default mode network (DMN) were estimated using independent component analysis (ICA) and a seed-based method. One-way analysis of variance (ANOVA) was performed between the tSNR map, SMN, and DMN from the three data sets for between-group analysis.
P < 0.05 with a family-wise error (FWE) correction for multiple comparisons was considered statistically significant.
Results: One-way ANOVA and post-hoc two-sample t-tests showed that the tSNR was higher in Data 1 than Data 2 and 3 in white matter structures such as the striatum and medial and superior longitudinal fasciculus. One-way ANOVA revealed no differences in SMN or DMN across the three data sets.
Conclusion: Within the adapted metrics estimated under specific imaging conditions employed in this study, multiband accelerated EPI, which substantially reduced scan times, provides the same quality image of functional connectivity as rs-fMRI by using conventional EPI at 3T. Under employed imaging conditions, this technique shows strong potential for clinical acceptance and translation of rs-fMRI protocols with potential advantages in spatial and/or temporal resolution. However, further study is warranted to evaluate whether the current findings can be generalized in diverse settings.
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참고문헌 (16)
참고문헌 신청
Boyacioglu R / 2015 / Improved sensitivity and specificity for resting state and task fMRI with multiband multi-echo EPI compared to multi-echo EPI at 7 T / Neuroimage 119 :
Cole DM / 2010 / Advances and pitfalls in the analysis and interpretation of resting-state FMRI data / Front Syst Neurosci 4 : 8 ~
Cordes D / 2001 / Frequencies contributing to functional connectivity in the cerebral cortex in"resting-state"data / AJNR Am J Neuroradiol 22 : 1326 ~ 1333
Feinberg DA / 2010 / Multiplexed echo planar imaging for sub-second whole brain FMRI and fast diffusion imaging / PLoS One 5 : e15710 ~
Griffanti L / 2014 / ICAbased artefact removal and accelerated fMRI acquisition for improved resting state network imaging / Neuroimage 95 : 232 ~ 247
Cole DM / 2010 / Advances and pitfalls in the analysis and interpretation of resting-state FMRI data / Front Syst Neurosci 4 : 8 ~
Cordes D / 2001 / Frequencies contributing to functional connectivity in the cerebral cortex in"resting-state"data / AJNR Am J Neuroradiol 22 : 1326 ~ 1333
Feinberg DA / 2010 / Multiplexed echo planar imaging for sub-second whole brain FMRI and fast diffusion imaging / PLoS One 5 : e15710 ~
Griffanti L / 2014 / ICAbased artefact removal and accelerated fMRI acquisition for improved resting state network imaging / Neuroimage 95 : 232 ~ 247
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