Multiplexed echo trains in nuclear magnetic resonance
US5327088A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 31, 1992 |
| Grant date | Jul 5, 1994 |
| Priority date | — |
| Expiry date | Jul 31, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/561
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A nuclear magnetic resonance (NMR) technique for producing multiplexed NMR echo trains. The present invention results in the placement of discrete copies of the original spin-echo in a line along k-space. Utilizing a conventional NMR apparatus, a longitudinal magnetic field is first generated. Next a train of NMR spin-echoes is created by imprinting a repetitive pattern on the longitudinal magnetization. This pattern is composed of a sum of complex exponentials. The spins are then evolved and observed in an uninterrupted readout period. The result is an NMR pulse sequence (10) which splits the spin-echo into a series of spin-echoes thereby permitting the sampling of k-space in a single data acquisition. In the preferred embodiment, the multiplexed echo train technique of the present invention is applied to single-shot magnetic residence imaging (MRI) to permit rapid collection of data, fast screening, and two or three-dimensional imaging in clinically practical times.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.