Mammographic methods and apparatuses
US5050197A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 19, 1989 |
| Grant date | Sep 17, 1991 |
| Priority date | — |
| Expiry date | Dec 19, 2009 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B6/107
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Methods and apparatuses in mammographic photography, wherein the breast (M) to be photographed is pressed and spread between holders (6,7) attached to the photographing apparatus. A beam (R) of X-radiation is directed from one side of the holders (6,7) through the breast (M) placed between the holders at depicting means (21) placed at the opposite side of the holders in relation to the source (2) of X-radiation, said depicting means being placed inside a film cassette or equivalent placed in connection with the frame of the apparatus. In order to carry out the photography of a breast (M.sub.1 ; M.sub.2 ;M.sub.3) in different projections (f;g;h), the frame part (25) of the apparatus, in which the source (2) of radiation, the depicting means (21), as well as the breast holders (6,7) are fitted, is turned around such an axis (b--b) as substantially coincides with the central axis (a--a) of the breast (M) to be photographed, which is being pressed by the breast holders (6,7). One objective of the invention is that the person who is being photographed should not have to move and that the height position of the apparatus should not have to be altered, at least not to a substantial extent…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.