Yongquan Ye1, Ewart Mark Haacke1
1Radiology, Wayne State University, Detroit, MI, United States
It is well known that the intravascular signals contribute about half of the functional contrast at 3T, and physiological effects also contribute to the BOLD signal. Although extensively studied in task/event related fMRI, the role of vascular and physiological effects in resting state (RS) functional connectivity is yet to be fully understood. By implementing flow dephasing with low VENC value, this study aims at estimating the contribution of the intravascular (IV) blood signal and physiological effects to local and long range resting state signal characteristics.