Use of persistent heterocyclic free-radicals in magnetic resonance imaging
US5435991A · kind A · utility
14Cited by
7References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 18, 1994 |
| Grant date | Jul 25, 1995 |
| Priority date | — |
| Expiry date | Mar 18, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/24
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention provides the use of a persistent .pi.-system free radical for the manufacture of a contrast medium for use in magnetic resonance imaging, wherein the electron delocalising .pi.-system of said radical comprises at least one homo or heterocyclic ring, said radical being other than the chloranil semiquinone anion radical or a trityl radical. Also provided are magnetic resonance imaging contrast media containing and methods using such radicals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.