Blood vessel projection imaging system using nuclear magnetic resonance
US4565968A · kind A · utility
67Cited by
2References
25Claims
0Family size
Inventor
Key dates
| Filing date | Feb 16, 1983 |
| Grant date | Jan 21, 1986 |
| Priority date | — |
| Expiry date | Feb 16, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/56308
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A two-dimensional projection image of the NMR activity within a volume is obtained. The signals due to static material are cancelled and do not appear in the projection image. The signals due to moving blood in vessels produce an isolated image of the vessels with the superimposed structure removed. The excitation of a plane is accomplished using a single excitation pulse without requiring an a.c. gradient. The uniformity requirement of the inversion excitation is minimized. Images are generated which distinguish the direction of flow.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.