Complex quotient nuclear magnetic resonance imaging
US4649346A · kind A · utility
12Cited by
3References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 9, 1983 |
| Grant date | Mar 10, 1987 |
| Priority date | — |
| Expiry date | Nov 9, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/565
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
In an NMR imaging system, an image plane is scanned and NMR signals are collected over a plurality of image lines. The experiment is repeated, with the timing of the excitation pulses changed. Images are formed by performing Fourier transformations of the signal values. A ratio image is then formed by performing a complex division of the two images on a pixel by pixel basis. The ratio values cancel phase error effects in the image data and the use of complex numbers maintains the proper pixel polarity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.