Imaging systems
US4315216A · kind A · utility
25Cited by
4References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 16, 1979 |
| Grant date | Feb 9, 1982 |
| Priority date | — |
| Expiry date | May 16, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F7/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Nuclear magnetic resonance (NMR) apparatus have beenproposed for examining slices or volumes of bodies, perhaps for medical examination of patients. Magnetic fields are used to induce resonance in a selected region of a body and a resonance signal is detected during a pulse of a gradient field which causes phase dispersion across the region. It is now proposed that more efficient operation of the apparatus is possible if the gradient pulse is a non-square pulse, perhaps a distorted sinusoid, and the resonance signal is sampled during that pulse at intervals such that .intg. Hdt is substantially equal between adjacent samples.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.