Meeting Banner
Abstract #2139

MR Perfusion Imaging Using High-Temporal-Resolution Resting-State Functional Magnetic Resonance Imaging

Tianyi Qian 1 , Yinyan Wang 2,3 , and Tao Jiang 2,3

1 MR Collaborations NE Asia, Siemens Healthcare, Beijing, Beijing, China, 2 Beijing Neurosurgical Institute, Beijing, China, 3 Beijing Tiantan Hospital, Capital Medical University, Beijing, China

In previous resting-state functional magnetic resonance imaging (rs-fMRI) studies, the global signal (the averaged time series of BOLD signal across the whole brain) has always been treated as the background noise and is typically regressed out. Here, an iterative algorithm was used to extract the time-shift-corrected global signal. By calculating the time delay and weight with respect to the corrected global signal in each voxel, we were able to measure the transient time of the whole brain. Simultaneous multislice acceleration acquisition combined with rs-fMRI was used to acquire the dataset used in this study to further improve the temporal and spatial resolution of this method.

This abstract and the presentation materials are available to members only; a login is required.

Join Here