Digital fluorographic method and system
US4450478A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 9, 1981 |
| Grant date | May 22, 1984 |
| Priority date | — |
| Expiry date | Sep 9, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/3205
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A digital fluorographic method and system calls for digitizing and storing first and second x-ray picture information derived prior to and after, respectively, injection of a contrast medium into the subject. The first and second x-ray picture information are digitized, stored and processed to develop first and second processed picture data, respectively, and the first and second processed picture data are subtractively combined to produce picture data corresponding to a pictorial representation of differences between the x-ray picture information prior to and after, respectively, the injection of the contrast medium. The method and system call for various combinations of the following operations: averaging one or both of the x-ray picture data; convolution of the picture data derived prior to the injection of the contrast medium; pre-enhancement of one or both of the x-ray picture data; and post-enhancement of the picture data corresponding to the pictorial representation of the differences between the x-ray pictures prior to and after, respectively, the injection of the contrast medium. The inventive system includes a plurality of storage units and display units, in conjunction w…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.