Magnetic resonance tomography method with screening of signals from tissues with long transverse relaxation times
US5814991A · kind A · utility
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10Claims
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Key dates
| Filing date | Apr 14, 1997 |
| Grant date | Sep 29, 1998 |
| Priority date | — |
| Expiry date | Apr 14, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/50
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In a nuclear magnetic resonance tomography apparatus and a method in the form of a pulse sequence for operating the apparatus, after an excitation of spins in a subject, two groups of nuclear magnetic resonance signals are obtained in two time intervals at different chronological spacings from the excitation time. An image is obtained on the basis of the signal differences of nuclear magnetic resonance signals of the first and second groups with corresponding locus-encoding. Signal contributions from tissues with longer T2 relaxation time can thereby be screened out.
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