US4550419A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diagnostic radiology setup with means for suppressing stray radiation
Assignee: Siemens AG
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Filing: 1983-10-19
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Granted: 1985-10-29
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Expires: 2003-10-19
Abstract
Abstract The invention relates to a diagnostic radiology setup with means for suppressing stray radiation and with an image intensifier television chain with image storing means. There is provided a perforated diaphragm of radiation-absorbing material near the tube, which diaphragm can be introduced into the ray path selectively. Two image memories for an X-ray picture with a diaphragm and an X-ray picture without a diaphragm and an image processing system serve for comparing the image information of the two X-ray pictures to determine and eliminate the stray radiation component.
Inventors
- 👤 Horst Aichinger
- 👤 Paul Marhoff
- 👤 Manfred Pfeiler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:59
CPC Classifications
A; A61; A61B; A61B6/00; A61B6/48; A61B6/483; A61B6/52; A61B6/5258; G; G21; G21K; G21K1/00; G21K1/02; G21K1/025; H; H05; H05G; H05G1/00; H05G1/08; H05G1/64
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
125 words
A diagnostic radiology set up for suppressing stray radiation components which comprises, in combination: (a) an image intensifier television chain, said chain having an image intensifier, a television camera and viewing means for developing and presenting an X-ray picture; (b) a tube for generating an X-ray beam; (c) a perforated diaphragm of radiation absorbing material capable of being selectively introduced into said X-ray beam; (d) first and second image storing means for storing image information for a first X-ray picture generated with said diaphragm and a second X-ray picture generated without said diaphragm; and (e) an image processing system for comparing said first and second X-ray pictures so that stray radiation components may be identified and eliminated to generate a stray radiation free X-ray picture.
Claim 2
Dependent Claim
125 words
A diagnostic radiology set up for suppressing stray radiation components which comprises, in combination: (a) an image intensifier television chain, said chain having an image intensifier, a television camera and viewing means for developing and presenting an X-ray picture; (b) a tube for generating an X-ray beam; (c) a perforated diaphragm of radiation absorbing material capable of being selectively introduced into said X-ray beam; (d) first and second image storing means for storing image information for a first X-ray picture generated with said diaphragm and a second X-ray picture generated without said diaphragm; and (e) an image processing system for comparing said first and second X-ray pictures so that stray radiation components may be identified and eliminated to generate a stray radiation free X-ray picture.
Claim 3
Dependent Claim
28 words
A diagnostic radiology set up as recited in claim 1, further comprising means for sensing and receiving dosage control signals associated with said first and second X-ray pictures.
Claim 4
Dependent Claim
46 words
A diagnostic radiology set up according to claim 2, wherein said image intensifier television chain further comprises a dosage rate control, said dosage rate control having an amplifier controllable by and dependent on the difference between the generated power of said first and second X-ray pictures.
Claim 5
Dependent Claim
70 words
A diagnostic radiology set up according to claim 2, which further comprises: (a) an X-ray dosage control; (b) means for storing X-ray data derived from a radioscope of a patient; and (c) means for generating a correction signal, said correction signal being dependent on the degree of control required for readjustment of an X-ray picture taken without said diaphgram in comparison with a preceding X-ray picture taken with said diaphragm.
Claim 6
Dependent Claim
37 words
The diagnostic radiology set up as recited in claim 1, wherein an X-ray picture with said diaphragm is taken after an X-ray picture without said diaphragm, and wherein said radiology set up includes a dosage rate control.
Claim 7
Dependent Claim
33 words
The diagnostic radiology set up according to claims 1, 2, 3, 4 or 5 further comprising means for locating a signal in the center of a picture element of a trial X-ray take.
Claim 8
Dependent Claim
37 words
The diagnostic radiology set up according to claims 1 or 2, wherein said first memory for storing data for said first X-ray picture has a smaller capacity than said second memory for storing said second X-ray picture.
References Cited (Backward Citations)
DE2452166A1
Cited
US4087837A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-10-28 | 1989-04-29 | 1989-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-10-28 | 1993-04-29 | 1993-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-10-28 | 1997-04-29 | 1997-10-29 | $7700.00 | Window Closed / Lapsed |