Method of compensating for phase error of phase encoding gradient pulse in fast spin echo imaging method
US6335621B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 8, 2000 |
| Grant date | Jan 1, 2002 |
| Priority date | — |
| Expiry date | Nov 8, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/56518
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of compensating a phase error of a phase encoding gradient pulse in fast spin echo (FSE) imaging, wherein a bipolar type phase encoding gradient pulses for tuning are applied between a 90° RF signal and a first 180° RF signal in a FSE sequence to obtain a tuning value. Alternatively, an additional 180° RF signal is applied between a 90° RF signal and a first 180° RF signal in a FSE sequence, and then phase encoding gradient pulses for tuning are applied between the additional 180° RF signal and the first 180° RF signal to obtain a tuning value. The phase errors of the phase encoding gradient pulses are compensated for using the obtained tuning value. Accordingly, a ringing artifact or blurring phenomenon of an image can be reduced in the FSE imaging, and the contrast of an image can be improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.