Method for determining the reliability of fMRI parameters
US6477399B2 · kind B2 · utility
10Cited by
6References
5Claims
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Key dates
| Filing date | Mar 29, 2001 |
| Grant date | Nov 5, 2002 |
| Priority date | — |
| Expiry date | Apr 13, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/5616
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An EPI pulse sequence is performed by an MRI system which acquires images of the brain over a time interval during which the subject performs a function or is stimulated in a pattern. An fMRI parameter is calculated for each voxel which indicates those regions of the brain that are active during the study. The same acquired NMR data is employed in a jackknife method for recalculating the fMRI parameter many times and from the distribution of the recalculated values a confidence level indicator is produced. Low confidence level indicators are used to exclude regions which are otherwise indicated as active.
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