Stimulus induced rotary saturation for magnetic resonance functional imaging
US9983282B2 · kind B2 · utility
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6References
11Claims
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Key dates
| Filing date | Nov 21, 2007 |
| Grant date | May 29, 2018 |
| Priority date | — |
| Expiry date | Nov 1, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/5602
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Spin-lock T1ρ-weighted images of a subject are acquired and processed to produce an image that is indicative of bioelectromagnetic activity in the subject. A spin-lock RF field B1ρ is produced such that the Larmor frequency in the rotating frame corresponds to the expected frequency of the bioelectromagnetic activity. As a result, the magnetic field fluctuations generated by the bioelectromagnetic currents shorten the T1ρ of the surrounding tissue, creating a contrast mechanism that is seen as a reduced MR signal in the T1ρ-weighted image that is produced.
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