Rare earth/chelating agent complex for digital fluoroscopy
US4478816A · kind A · utility
18Cited by
8References
6Claims
0Family size
Assignee
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Key dates
| Filing date | Jun 7, 1982 |
| Grant date | Oct 23, 1984 |
| Priority date | — |
| Expiry date | Jun 7, 2002 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K49/04
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A rare earth/chelating agent complex is employed in digital fluoroscopy. More specifically, a contrast medium is utilized in digital fluoroscopy, the contrast medium consisting of a non-radioactive composition of a rare earth metal and a chelating agent. The rare earth metal is lutecium or ytterbium, while the chelating agent is DTPA, EHPG or HBED. The digital fluoroscopy method results in the development of diagnostic energy difference image information as a result of application of X-ray beams of two different energy levels, coupled with subtraction processing of the resulting image information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.