Radiographic diagnosis apparatus, radiographic diagnosis method, plate member, and position detecting method
US6332015A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 16, 1999 |
| Grant date | Dec 18, 2001 |
| Priority date | — |
| Expiry date | Nov 16, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B6/505
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A radiographic diagnosis apparatus includes an X-ray generation device for irradiating an object with X-rays, a two-dimensional array detector which is formed by arraying small detecting elements in a two-dimensional matrix and opposing the X-ray generation device with the object interposed between them and detects X-rays transmitted through the object in units of pixels, a ray conversion plate adhered to the detecting surface of the array detector to change the properties of X-rays in units of pixels, and an image processor for performing image processing based on data from the array detector, thereby generating a radiographic diagnosis image. The ray conversion plate includes a plurality of different types of attenuating elements arrayed in a checkerboard pattern to attenuate radiation at different attenuation ratios. The properties of X-rays are changed via the ray conversion plate. The ray conversion plate changes the properties into two types. The array detector detects two types of property-changed X-ray signals transmitted through the object in units of pixels, and converts the signals into digital signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.