Fast 3D fMRI Acquisition over a Small Field-of-View with (k, t)-Space Undersampling
Qingfei Luo1, Kaibao Sun1, Alessandro Scotti1, Guangyu Dan1,2, Muge Karaman1,2, and Xiaohong Joe Zhou1,2,3
1Center for Magnetic Resonance Research, University of Illinois at Chicago, Chicago, IL, United States, 2Department of Biomedical Engineering, University of Illinois at Chicago, Chicago, IL, United States, 3Departments of Radiology and Neurosurgery, University of Illinois at Chicago, Chicago, IL, United States
The simultaneous multi-slice EPI (SMS-EPI) technique is widely used in fast fMRI studies to achieve a short TR (e.g., < 1 s), but its image quality can be degraded when the slices span only a small brain area. In this study we develop a fast fMRI acquisition technique for imaging a small area by employing (k, t)-space undersampling and three-dimension reduced field-of-view imaging (k-t 3D-rFOVI). Our human fMRI experiments covering the visual cortex demonstrate that k-t 3D-rFOVI can provide higher detection sensitivity of brain activations than SMS-EPI.
This abstract and the presentation materials are available to members only;
a login is required.