Stereographic X-ray examination system including graphic screen means for generating index marks to locate corresponding regions in different X-rays
US5245539A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 23, 1990 |
| Grant date | Sep 14, 1993 |
| Priority date | — |
| Expiry date | Mar 23, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B42/026
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A light box for X-rays is made by using a graphics screen (20) coupled to a microprocessor (23), with the screen being used with inverse brightness. Under these conditions, the graphics screen emits light at nearly all points, other than special locations (I.sup.25) whose positions can be controlled by means of a control box (24). An X-ray negative (6) to be examined is placed over the graphics screen. The control box is used to move the non-illuminated regions of the screen to point to special locations in the negative. The light box is particularly applicable t studying stereographic negatives for mammography. It makes it possible to determine more quickly and more accurately the locations of lesions in breasts under examination.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.