Methods of in vivo radiation measurement
US4976266A · kind A · utility
111Cited by
13References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 25, 1988 |
| Grant date | Dec 11, 1990 |
| Priority date | — |
| Expiry date | Jul 25, 2008 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N2005/1072
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Methods of and apparatus for in vivo radiation measurements relay on a MOSFET dosimeter of high radiation sensitivity with operates in both the passive mode to provide an integrated dose detector and active mode to provide an irradiation rate detector. A compensating circuit with a matched unirradiated MOSFET is provided to operate at a current designed to eliminate temperature dependence of the device. Preferably, the MOSFET is rigidly mounted in the end of a miniature catheter and the catheter is implanted in the patient proximate the radiation source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.