Patent US5008915A successfully refreshed from Google Patents.
US5008915A
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Methods for forming a radiograph using slit radiography
Assignee: Optische Industrie de Oude Delft NV
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Filing: 1989-02-03
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Granted: 1991-04-16
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Expires: 2009-02-03
Abstract
Abstract There are disclosed methods for making radiographs using slit-scanning radiographic techniques wherein a measuring exposure is effected at low radiation intensity and thereafter radiation intensity is set at a value suitable for effecting and taking the actual exposure and further including a modulation of radiation intensity during actual exposure.
Inventors
- 👤 Hugo Vlasbloem
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:59
CPC Classifications
A; A61; A61B; A61B6/00; A61B6/44; A61B6/4476; A61B6/06; H; H05; H05G; H05G1/00; H05G1/08; H05G1/58; A61B6/54; A61B6/548
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
144 words
A method for forming a radiograph of an object, which comprises the steps of: (a) energizing an X-ray source to a first level of radiation intensity, said X-ray source including a slit diaphragm; (b) effecting a first scanning of said object by an X-ray beam from said X-ray source; (c) generating output signals of radiation intensity from an elongated X-ray detector during said first scanning; (d) measuring said output signals during at least a portion of said first scanning; (e) energizing said X-ray beam to a higher level of radiation intensity as determined by step (d) for forming a radiograph of said object; (f) effecting a second scanning of said object with an X-ray beam from said X-ray source at said higher level of radiation intensity; (g) modulating said X-ray beam during said second scanning; and (h) forming said radiograph during said second scanning.
Claim 2
Independent Claim
144 words
A method for forming a radiograph of an object, which comprises the steps of: (a) energizing an X-ray source to a first level of radiation intensity, said X-ray source including a slit diaphragm; (b) effecting a first scanning of said object by an X-ray beam from said X-ray source; (c) generating output signals of radiation intensity from an elongated X-ray detector during said first scanning; (d) measuring said output signals during at least a portion of said first scanning; (e) energizing said X-ray beam to a higher level of radiation intensity as determined by step (d) for forming a radiograph of said object; (f) effecting a second scanning of said object with an X-ray beam from said X-ray source at said higher level of radiation intensity; (g) modulating said X-ray beam during said second scanning; and (h) forming said radiograph during said second scanning.
Claim 3
Dependent Claim
21 words
The method for forming a radiograph of an object as defined in claim 1 wherein said X-ray detector measures ionizing radiation.
Claim 4
Dependent Claim
30 words
The method for forming a radiograph of an object as defined in claim 1 wherein said modulating step (g) is effected in response to said output signals of step (d).
Claim 5
Dependent Claim
55 words
The method for forming a radiograph of an object as defined in claim 1 and further including the steps of generating output signals of radiation intensity from said elongated X-ray detector during said second scanning and modulating said X-ray beam during said second scanning in response to said output signals generated during said second scanning.
References Cited (Backward Citations)
US4803714A
Cited
US4715056A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-04-15 | 1994-10-15 | 1995-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-04-15 | 1998-10-15 | 1999-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-04-15 | 2002-10-15 | 2003-04-16 | $7700.00 | Window Closed / Lapsed |