Imaging with focused curved radiation detectors
US4709382A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 21, 1984 |
| Grant date | Nov 24, 1987 |
| Priority date | — |
| Expiry date | Nov 21, 2004 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B6/4021
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A digital radiography system is disclosed having a multi-element curved detector assembly. The system includes an X-ray tube having a focal spot from which its X-ray energy primarily emanates, and which is spaced from the detector assembly to define a subject examination space. The detector assembly includes a number of individual detector elements each having a radiation sensitive face, the element faces collectively defining a concave curved surface oriented toward the focal spot. The assembly of elements can embody forms including a single curved line of elements, multiple similarly curved lines defining collectively a portion of a cylinder, or a three-dimensional curved array defining a portion of a sphere. Multiple layer stacked arrays can also be used. Each element responds to incident X-rays to produce an electrical charge signal indicative of the radiation. The detector assembly can be scanned relative to a subject in the examination space, and time delay and integrate circuitry is employed to improve the signal to noise characteristics of data represented by the electrical signals, by shifting and adding the signals in synchrony with scan motion prior to processing by imag…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.