PMID- 19607928 OWN - NLM STAT- MEDLINE DCOM- 20091104 LR - 20211028 IS - 1095-9572 (Electronic) IS - 1053-8119 (Print) IS - 1053-8119 (Linking) VI - 48 IP - 3 DP - 2009 Nov 15 TI - Static and dynamic characteristics of cerebral blood flow during the resting state. PG - 515-24 LID - 10.1016/j.neuroimage.2009.07.006 [doi] AB - In this study, the static and dynamic characteristics of cerebral blood flow (CBF) in the resting state were investigated using an arterial spin labeling (ASL) perfusion imaging technique. Consistent with previous PET results, static CBF measured by ASL was significantly higher in the posterior cingulate cortex (PCC), thalamus, insula/superior temporal gyrus (STG) and medial prefrontal cortex (MPFC) than the average CBF of the brain. The dynamic measurement of CBF fluctuations showed high correlation (functional connectivity) between components in the default mode network. These brain regions also had high local temporal synchrony and high fluctuation amplitude, as measured by regional homogeneity (ReHo) and amplitude of low-frequency fluctuation (ALFF) analyses. The spatial pattern of the static CBF correlated well with that of the dynamic indices. The high static and dynamic activities in the PCC, MPFC, insula/STG and thalamus suggest that these regions play a vital role in maintaining and facilitating fundamental brain functions. FAU - Zou, Qihong AU - Zou Q AD - Neuroimaging Research Branch, National Institute on Drug Abuse, National Institutes of Health, 251 Bayview Blvd., Suite 200, Baltimore, MD 21224, USA. FAU - Wu, Changwei W AU - Wu CW FAU - Stein, Elliot A AU - Stein EA FAU - Zang, Yufeng AU - Zang Y FAU - Yang, Yihong AU - Yang Y LA - eng GR - Z01 DA000469-04/ImNIH/Intramural NIH HHS/United States GR - Z99 DA999999/ImNIH/Intramural NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural DEP - 20090714 PL - United States TA - Neuroimage JT - NeuroImage JID - 9215515 RN - 0 (Spin Labels) SB - IM MH - Adult MH - Brain/*blood supply/*physiology MH - Brain Mapping MH - Cerebrovascular Circulation/*physiology MH - Female MH - Humans MH - Kinetics MH - Magnetic Resonance Imaging MH - Male MH - Perfusion Imaging MH - Rest/*physiology MH - Spin Labels PMC - PMC2739419 MID - NIHMS136586 EDAT- 2009/07/18 09:00 MHDA- 2009/11/05 06:00 PMCR- 2010/11/15 CRDT- 2009/07/18 09:00 PHST- 2009/03/03 00:00 [received] PHST- 2009/06/29 00:00 [revised] PHST- 2009/07/03 00:00 [accepted] PHST- 2009/07/18 09:00 [entrez] PHST- 2009/07/18 09:00 [pubmed] PHST- 2009/11/05 06:00 [medline] PHST- 2010/11/15 00:00 [pmc-release] AID - S1053-8119(09)00766-6 [pii] AID - 10.1016/j.neuroimage.2009.07.006 [doi] PST - ppublish SO - Neuroimage. 2009 Nov 15;48(3):515-24. doi: 10.1016/j.neuroimage.2009.07.006. Epub 2009 Jul 14.