Method for producing an off-center image using an EPI pulse sequence
US5689186A · kind A · utility
11Cited by
5References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 26, 1995 |
| Grant date | Nov 18, 1997 |
| Priority date | — |
| Expiry date | Dec 26, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/4833
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An off-center NMR image is produced using an EPI pulse sequence. The offset along the readout gradient axis is achieved by shifting the frequency of an RF reference signal used to demodulate the received NMR echo signals. Phase errors produced by the NMR system and by the shifts in reference signal frequency are corrected in "real time" by also shifting the phase of the RF reference signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.