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Prospective acquisition correction for head motion with image-based tracking for real-time fMRI.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Thesen, Stefan Heid, Oliver Mueller, Edgar |
| Copyright Year | 2000 |
| Abstract | In functional magnetic resonance imaging (fMRI) head motion can corrupt the signal changes induced by brain activation. This paper describes a novel technique called Prospective Acquisition CorrEction (PACE) for reducing motion-induced effects on magnetization history. Full three-dimensional rigid body estimation of head movement is obtained by image-based motion detection to a high level of accuracy. Adjustment of slice position and orientation, as well as regridding of residual volume to volume motion, is performed in real-time during data acquisition. Phantom experiments demonstrate a high level of consistency (translation < 40 microm; rotation < 0.05 degrees ) for detected motion parameters. In vivo experiments were carried out and they showed a significant decrease of variance between successively acquired datasets compared to retrospective correction algorithms. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | https://pdfs.semanticscholar.org/b048/4f2ddd69a76f0dfdbd6803527d55cb8895a0.pdf |
| Alternate Webpage(s) | http://cds.ismrm.org/ismrm-2000/PDF1/0056.PDF |
| PubMed reference number | 10975899v1 |
| Volume Number | 44 |
| Issue Number | 3 |
| Journal | Magnetic resonance in medicine |
| Language | English |
| Access Restriction | Open |
| Subject Keyword | Correction text:Find:Pt:Contact lens.left:Nar Head Movements Magnetic Resonance Imaging Muscle Rigidity Phantoms, Imaging Sample Variance algorithm fMRI |
| Content Type | Text |
| Resource Type | Article |
