.sup.23 NA magnetic resonance functional brain imaging
US4779619A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 15, 1986 |
| Grant date | Oct 25, 1988 |
| Priority date | — |
| Expiry date | Aug 15, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/4806
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Magnetic resonance imaging of sodium levels in the brain is used as a method for determining regional brain function. Direct measurement of sodium levels can be directly used to determine characteristics of blood volume in the cerebrum for research, diagnostic or clinical applications. Determination of the ratio between changes in sodium level changes and changes in arterial dissolved carbon dioxide levels can be used as a measure of regional vascular reserve when compared with norms, as an early indicator of possible cerebral ischemia. Grey scale images can be made by tomographic methods of the information generated by these scans.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.