Reduction of truncation caused artifacts
US4950991A · kind A · utility
8Cited by
4References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 31, 1989 |
| Grant date | Aug 21, 1990 |
| Priority date | — |
| Expiry date | May 31, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/5676
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The Gibb's artifact in magnetic resonance images is reduced by asymmetrically sampling acquired F.I.D. signals to obtain data, time domain filtering the obtained data with a filter that reduces overshoot, degrades resolution but increases SNR. Then obtaining symmetrical data by complex conjugating the time domain filtered data which improves the resolution, compresses the overshoot, but decreases SNR. Processing the symmetrical data to obtain images with insignificant Gibb's artifacts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.