Medical diagnostic film for soft tissue imaging (II)
US6037112A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 14, 1998 |
| Grant date | Mar 14, 2000 |
| Priority date | — |
| Expiry date | Oct 14, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/167
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A radiation-sensitive medical diagnostic film for soft tissue imaging, particularly mammography, is disclosed. The film allows more rapid processing than films currently available for mammographic imaging and maintains acceptably high levels of image sharpness and low levels of mottle. The radiographic film records medical diagnostic images of soft tissue through (a) exposure by a single intensifying screen located to receive an image bearing source of X-radiation and (b) processing, including development, fixing and drying, in 90 seconds or less comprised of a film support transparent to radiation emitted by the intensifying screen and having opposed front and back major faces and an image-forming portion for providing, when imagewise exposed by the intensifying screen and processed, an average contrast in the range of from 2.5 to 3.5, measured over a density above fog of from 0.25 to 2.0. The image-forming portion is comprised of (i) a processing solution permeable front layer unit coated on the front major face of the support capable of absorbing up to 70 percent of the exposing radiation and containing less than 40 mg/dm.sup.2 of hydrophilic colloid and less than 40 mg/dm.sup.2…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.