Echo Time Dependence of Resting Signal Fluctuations in USPIO Based Cerebral Blood Volume Imaging: Implications for Task-Based and Resting State fMRI

Keywords

according achieved acknowledgments activities affect application approximately around averaging believed blood bold bottom brain cardiac channel characterize chosen christen coefficients coil component components connectivity consider considered contrast coverage covering defined degree degrees depend dependence dependent deviation dropout echoes effective enhanced entire even exploring five fluctuations formulated foundation frames functional give gives gradient gray guiding half head health hence humans implications include included includes increasing induced injection instability intensities intensity interpreted intriguing inversion iron life likely long materials matrix measured measuring model neural noise noises normalized numerical ongoing optimal oxide panel part peaks physiological placed plasma post power previous project proportional pulsation quadratically radiology reasonable recovery reduced reducing reduction required resolution respect respiration resting sacrificing scenario scenarios selection sensitivity series significantly simulated simulation since slice slices slower slowly smaller smoothing spatial spectral speed spoiled spontaneous static statistics strong studies subjection suggested suggesting suggests system task temporal termed thermal true useful volume ways