Patent US3836122A successfully refreshed from Google Patents.
Patent US5293416A successfully refreshed from Google Patents.
US5293416A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Radiography apparatus for producing X-ray shadowgraphs
Assignee: Siemens AG
•
Filing: 1992-11-16
•
Granted: 1994-03-08
•
Expires: 2012-11-16
Abstract
Abstract A radiography apparatus with which x-ray shadowgraphs are produced has a detector array in the form of a line or strip, and an x-ray radiator which is moved in a direction perpendicular to the line direction of the detector array for scanning a measuring field from different directions. The detector array accordingly receives x-radiation proceeding through the measuring field from different directions. A screen or slotted diaphragm having diaphragm shafts directed onto the detector array is disposed between the x-ray radiator and the measuring field, and blanks out x-radiation which is not useful for generating the shadowgraph image.
Inventors
- 👤 Manfred Pfeiler
- 👤 Paul Marhoff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:24
CPC Classifications
A; A61; A61B; A61B6/00; A61B6/02; A61B6/03; A61B6/032; G; G01; G01N; G01N23/00; G01N23/02; G01N23/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
196 words
A radiography apparatus for producing x-ray shadowgraphs comprising: an x-ray radiator having a focus from which an x-ray beam emanates; a detector array formed by a line of detector elements; and means for moving said x-ray radiator while said detector array remains stationary for transirradiating a measurement field, disposed between said x-ray radiator and said detector array, from different directions with said x-ray beam with said x-ray beam being incident on said detector array after passing through said measuring field from said different directions, said detector array generating electrical signals corresponding to the x-rays incident thereon; means for constructing an x-ray shadowgraph from said electrical signals; a computer tomography detector array curved around said focus of said x-ray radiator and forming, in combination with said x-ray radiator, a computer tomography measuring unit movable by said means for moving said x-ray radiator around a system axis, said detector array for producing x-ray shadowgraphs being disposed perpendicularly relative to said computer tomography detector array, said computer tomography detector array generating electrical signals corresponding to x-rays from said x-ray radiator incident thereon; and means for generating a computer tomogram from said electrical signals from said computer tomography detector array.
Claim 2
Dependent Claim
196 words
A radiography apparatus for producing x-ray shadowgraphs comprising: an x-ray radiator having a focus from which an x-ray beam emanates; a detector array formed by a line of detector elements; and means for moving said x-ray radiator while said detector array remains stationary for transirradiating a measurement field, disposed between said x-ray radiator and said detector array, from different directions with said x-ray beam with said x-ray beam being incident on said detector array after passing through said measuring field from said different directions, said detector array generating electrical signals corresponding to the x-rays incident thereon; means for constructing an x-ray shadowgraph from said electrical signals; a computer tomography detector array curved around said focus of said x-ray radiator and forming, in combination with said x-ray radiator, a computer tomography measuring unit movable by said means for moving said x-ray radiator around a system axis, said detector array for producing x-ray shadowgraphs being disposed perpendicularly relative to said computer tomography detector array, said computer tomography detector array generating electrical signals corresponding to x-rays from said x-ray radiator incident thereon; and means for generating a computer tomogram from said electrical signals from said computer tomography detector array.
Claim 3
Dependent Claim
24 words
A radiography apparatus as claimed in claim 1 wherein said detector array for producing x-ray shadowgraphs is disposed above said computer tomography detector array.
Claim 4
Dependent Claim
25 words
A radiography apparatus as claimed in claim 1 wherein said detector array for producing x-ray shadowgraphs is disposed next to said computer tomography detector array.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-03-07 | 1997-09-06 | 1998-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-03-07 | 2001-09-06 | 2002-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-03-07 | 2005-09-06 | 2006-03-08 | $7700.00 | Window Closed / Lapsed |