Radiography apparatus
US4179100A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 1, 1977 |
| Grant date | Dec 18, 1979 |
| Priority date | — |
| Expiry date | Aug 1, 1997 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B6/4258
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Radiography apparatus including radiation generating means, collimator means interposed between the radiation generating means and an object to be exposed to radiation, scintillator means disposed on the opposite side of the object from the radiation generating means for converting the radiation to light, a self-scanning, integrated array of photodiodes for receiving light and emitting responsive electrical signals, optical coupling means connecting the scintillator means to the self-scanning, integrated photodiode array and signal receiving means for storing, processing or displaying the electrical signals. Additional collimators may be employed if desired. In a nuclear isotope embodiment, collimator means are provided between the object and the scintillator means. The self-scanning array of photodiodes has one or more integrated circuit elements, each having a plurality of photodiodes, a storage capacitor on which to integrate electric charges and a multiplex switch for periodic readout by means of an integrated shift register scanning circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.