Encapsulated particles useful as contrast agents in ultrasound and x-ray imaging compositions and methods
US5233995A · kind A · utility
17Cited by
9References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 21, 1991 |
| Grant date | Aug 10, 1993 |
| Priority date | — |
| Expiry date | Nov 21, 2011 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K49/049
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Stable particles comprising a core consisting of a water-insoluble ester or amide of 3,5-diacetamido-2,4,6-triiodobenzoic acid encapsulated with methyl cellulose, such particles having an average particle size of less than about 10 .mu.m, dispersions containing such particles, and methods for the preparation thereof are disclosed. The particles are particularly useful as contrast agents for use in x-ray and ultrasound diagnostic imaging compositions and methods.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.