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Ultrafast inverse imaging techniques for fMRI

Authors
Journal
NeuroImage
1053-8119
Publisher
Elsevier
Publication Date
Volume
62
Issue
2
Identifiers
DOI: 10.1016/j.neuroimage.2012.01.072
Keywords
  • Ini
  • Fast Imaging
  • Parallel Imaging
  • Inverse Problem

Abstract

Abstract Inverse imaging (InI) supercharges the sampling rate of traditional functional MRI 10–100 fold at a cost of a moderate reduction in spatial resolution. The technique is inspired by similarities between multi-sensor magnetoencephalography (MEG) and highly parallel radio-frequency (RF) MRI detector arrays. Using presently available 32-channel head coils at 3T, InI can be sampled at 10Hz and provides about 5-mm cortical spatial resolution with whole-brain coverage. Here we discuss the present applications of InI, as well as potential future challenges and opportunities in further improving its spatiotemporal resolution and sensitivity. InI may become a helpful tool for clinicians and neuroscientists for revealing the complex dynamics of brain functions during task-related and resting states.

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