Phase sensitive magnetic resonance technique with integrated gradient profile and continuous tunable flow
US5652513A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 1, 1996 |
| Grant date | Jul 29, 1997 |
| Priority date | — |
| Expiry date | Aug 1, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/563
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
When a magnetic resonance imaging sequence is retrieved from memory (58), one of the slice select, phase-encode to read gradient profiles are retrieved for one of the slice select, phase-encode, read gradients. The two gradient profiles have a common field of view if a read gradient or slice thickness if a slice select gradient, but have different motion sensitizations. The reference gradient profile G.sub.1 stored in a memory (52) and the motion sensitized gradient profile G.sub.2 stored in a memory (56) are weighted (60, 62) by weighting functions .alpha..sub.1, .alpha..sub.2 which are selected in accordance with the selected motion sensitivity and a selected one of the field of view or slice thickness. The weighted profiles are combined (64) to generate a motion sensitized gradient with the selected motion sensitivity, field of view or slice thickness. The combined weighted gradient profile and the reference gradient profile are used in imaging sequences to generate reference and motion sensitized data lines (82, 84) which are reconstructed (86) into a reference image representation and a motion sensitized image representation. A moving tissue only image representation can be ob…
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