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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Afacan, O. Hoge, S. Brooks, D.H. Morocz, I.A. |
| Copyright Year | 2009 |
| Description | Author affiliation: Dept. of Radiology, Harvard Medical School & Brigham and Women's Hospital, 75 Francis St., Boston, MA, USA (Hoge, S.; Morocz, I.A.) || ECE Dept., Northeastern University, 360 Huntington Ave., Boston, MA, USA (Afacan, O.; Brooks, D.H.) |
| Abstract | In this work, we apply the UNFOLD technique to a hybrid 3D-EPI sequence in order to accelerate image acquisition for fMRI studies. UNFOLD is used in the 3D slice encoding direction which directly doubles the temporal resolution. Combining UNFOLD with Partial Fourier acqusition further reduces the acquisition time for a whole brain volume from 2.4 seconds to 1 seconds. The sequence was tested on healthy volunteers who were exposed to an audio-visual stimulus paradigm involving the solution of arithmetic problems. The temporal decoding of neural activity using the BOLD contrast mechanism improved significantly at the cost of a slight loss in SNR. |
| Starting Page | 654 |
| Ending Page | 657 |
| File Size | 279428 |
| Page Count | 4 |
| File Format | |
| ISBN | 9781424439317 |
| ISSN | 19457928 |
| DOI | 10.1109/ISBI.2009.5193132 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2009-06-28 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Encoding Image analysis Recruitment Spatial resolution Image resolution Testing Magnetic resonance imaging Frequency Radiology Biomedical imaging fMRI analysis functional MRI UNFOLD partial Fourier |
| Content Type | Text |
| Resource Type | Article |
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