US5003571A
Expired / Lapsed
US
⏱️ 0.0 years remaining
X-ray image equipment
Assignee: Nippon Identograph Co Ltd
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Filing: 1990-06-01
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Granted: 1991-03-26
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Expires: 2010-06-01
Abstract
Abstract Soft x-ray radiation, which has a lower level of radiation, is transmitted to a target (i.e., the breast). The transmitted image of the target is refined through various computerized processes. All data is stored in a multiple image memory or filed in a laser having a large memory capacity. Stored images can be viewed on a a TV monitor or recalled and interfaced to a host computer. Accordingly, the present invention is designed for mass-screening. The whole sequence of data acquisition and processing is controlled by an operation controller, which also controls the accelerating voltage of the soft x-ray radiation. The equipment is not limited for use in detecting breast cancer and is equally adapted in examining infants or others who cannot tolerate large or heavy radiation dosages.
Inventors
- 👤 Cyouichiro Kido
- 👤 Katsuhei Hotta
- 👤 Takuya Haneda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:29
CPC Classifications
A; A61; A61B; A61B6/00; A61B6/50; A61B6/502; H; H04; H04N; H04N23/00; H04N23/30; H05; H05G; H05G1/00; H05G1/08; H05G1/60
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
252 words
Apparatus for providing high quality x-ray images of soft human tissue with a minimum amount of patient exposure that includes, x-ray means that includes a tube for radiating a target with soft radiation of wavelengths that are longer than one angstrom to produce images of said target, switching means associated with the x-ray tube for selectively changing the acceleration voltage applied to said x-ray tube to provide a first set of images produced at a first acceleration voltage and a second set of images produced at a second acceleration voltage, means to render the two sets of image visible, video camera means for recording both sets of images and providing video signals thereof, means for digitizing the video signals, integrating means for acting on the digitized image signal to remove unwanted noise therefrom, a first memory means for storing data relating to the first set of image signals and a second memory means for storing data relating to the second set of image signals, adding means for adding image signal data from said first and second memory means to enhance the dynamic range of said signal data, subtracting means for subtracting image signal data from said first and second memory means to enhance the intensity of said signal data, third memory means for storing the enhanced signal data to said adding and subtracting means, contrast intensifier means connected to said third memory means for increasing the resolution of the enhanced signal data, and video display means for viewing the enhanced signal data.
Claim 2
Dependent Claim
252 words
Apparatus for providing high quality x-ray images of soft human tissue with a minimum amount of patient exposure that includes, x-ray means that includes a tube for radiating a target with soft radiation of wavelengths that are longer than one angstrom to produce images of said target, switching means associated with the x-ray tube for selectively changing the acceleration voltage applied to said x-ray tube to provide a first set of images produced at a first acceleration voltage and a second set of images produced at a second acceleration voltage, means to render the two sets of image visible, video camera means for recording both sets of images and providing video signals thereof, means for digitizing the video signals, integrating means for acting on the digitized image signal to remove unwanted noise therefrom, a first memory means for storing data relating to the first set of image signals and a second memory means for storing data relating to the second set of image signals, adding means for adding image signal data from said first and second memory means to enhance the dynamic range of said signal data, subtracting means for subtracting image signal data from said first and second memory means to enhance the intensity of said signal data, third memory means for storing the enhanced signal data to said adding and subtracting means, contrast intensifier means connected to said third memory means for increasing the resolution of the enhanced signal data, and video display means for viewing the enhanced signal data.
Claim 3
Dependent Claim
39 words
The apparatus of claim 1 that further includes a profile intensifier means connected to said third memory means for intensifying high frequency components of the stored signal data and returning the profile intensified signal data to said third memory.
Claim 4
Dependent Claim
27 words
The apparatus of claim 2 that further includes a laser disk means connected to the third memory means to provide further storage of the enhanced signal data.
Claim 5
Dependent Claim
29 words
The apparatus of claim 1 that further includes a converter means for forwarding stored signal data from said first and second memory means to said adding and subtracting means.
Claim 6
Dependent Claim
29 words
The apparatus of claim 4 that further includes a controller means for controlling the operation of said switching means, said first and second memory means, and said converter means.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-03-25 | 1994-09-24 | 1995-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-03-25 | 1998-09-24 | 1999-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-03-25 | 2002-09-24 | 2003-03-26 | $7700.00 | Window Closed / Lapsed |