Radiation detection circuit and apparatus for radiographic examination
US7459688B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 11, 2006 |
| Grant date | Dec 2, 2008 |
| Priority date | — |
| Expiry date | Jan 3, 2027 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B6/037
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
An apparatus for radiographic examination includes a detection unit including a detector configured to detect a gamma ray emitted from a radioactive isotope in an object and to output a detected signal, a first measurement unit configured to determine a first crossing time at which a pulse height of the detected signal becomes substantially equal to a first threshold value, a second measurement unit configured to determine a second crossing time at which the pulse height of the detected signal becomes substantially equal to a second threshold value, and an incidence time calculation unit configured to calculate a starting time of the detected signal based on the first crossing time and the second crossing time and to output detection data; and an information processing unit configured to determine distribution of radioactive isotopes in the object based on multiple sets of said detection data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.