US4411012A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diagnostic radiology installation
Assignee: Siemens AG
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Filing: 1981-02-13
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Granted: 1983-10-18
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Expires: 2001-02-13
Abstract
Abstract In an exemplary embodiment, there is provided a patient support, a radiation measuring arrangement including a radiation source which generates at least one fan-shaped radiation beam, penetrating the radiography subject, and a radiation receiver which has an array of detectors which are connected to a signal processing circuit, and means for generating relative movement between the patient support and the radiation measuring arrangement in a longitudinal direction of the support, for the generation of a shadow image several radiation directions are generated so that a plurality of intersection points of the radiation paths result within an image exposure region. The signal processing circuit determines the radiation transparency in the patient for every intersection point of a plane parallel to the patient support.
Inventors
- 👤 Manfred Pfeiler
- 👤 Edgar Tschunt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:38
CPC Classifications
A; A61; A61B; A61B6/00; A61B6/44; A61B6/4429; A61B6/4435; A61B6/4447; A61B6/02; A61B6/03; A61B6/032; A61B6/40; A61B6/4021
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
182 words
A diagnostic radiology installation comprising a patient support extended in a longitudinal direction, a radiation measuring arrangement comprised of a radiation source, which generates at least one fan-shaped radiation beam penetrating the radiography subject and disposed transversely to the patient support, and of a radiation receiver which has an array of detectors which are connected to a signal processing circuit, means for effecting a relative movement between the patient support and the radiation measuring arrangment in the longitudinal direction of the support for generating a shadow image from the detector output signals by means of signal processing, means (16, 17, 18, 19) for generating several radiation directions are present, so that a plurality of intersection points of the radiation paths within an image exposure region result, and a signal processing circuit (20) coupled with said detectors for determining the radiation transparency in the patient (5) for every intersection point of a plane (S) parallel to the patient support (6), the radiation source (13) being rigidly connected with the radiation receiver (4) and being pivotal about the focus (1) of said radiation source.
Claim 2
Dependent Claim
182 words
A diagnostic radiology installation comprising a patient support extended in a longitudinal direction, a radiation measuring arrangement comprised of a radiation source, which generates at least one fan-shaped radiation beam penetrating the radiography subject and disposed transversely to the patient support, and of a radiation receiver which has an array of detectors which are connected to a signal processing circuit, means for effecting a relative movement between the patient support and the radiation measuring arrangment in the longitudinal direction of the support for generating a shadow image from the detector output signals by means of signal processing, means (16, 17, 18, 19) for generating several radiation directions are present, so that a plurality of intersection points of the radiation paths within an image exposure region result, and a signal processing circuit (20) coupled with said detectors for determining the radiation transparency in the patient (5) for every intersection point of a plane (S) parallel to the patient support (6), the radiation source (13) being rigidly connected with the radiation receiver (4) and being pivotal about the focus (1) of said radiation source.
Claim 3
Dependent Claim
194 words
A diagnostic radiology installation comprising a patient support extended in a longitudinal direction, a radiation measuring arrangement comprised of a radiation source, which generates at least one fan-shaped radiation beam penetrating the radiography subject and disposed transversely to the patient support, and of a radiation receiver which has an array of detectors which are connected to a signal processing circuit, means for effecting a relative movement between the patient support and the radiation measuring arrangement in the longitudinal direction of the support for generating a shadow image from the detector output signals by means of signal processing, means (16, 17, 18, 19) for generating several radiation directions are present, so that a plurality of intersection points of the radiation paths within an image exposure region result, and a signal processing circuit (20) coupled with said detectors for determining the radiation transparency in the patient (5) for every intersection point of a plane (S) parallel to the patient support (6), the radiation source emitting several ray fans (8, 9) at different directions, a detector array (10, 11) for receiving each ray fan, and the radiation source and all detector arrays (10, 11) being stationarily arranged.
Claim 4
Dependent Claim
194 words
A diagnostic radiology installation comprising a patient support extended in a longitudinal direction, a radiation measuring arrangement comprised of a radiation source, which generates at least one fan-shaped radiation beam penetrating the radiography subject and disposed transversely to the patient support, and of a radiation receiver which has an array of detectors which are connected to a signal processing circuit, means for effecting a relative movement between the patient support and the radiation measuring arrangement in the longitudinal direction of the support for generating a shadow image from the detector output signals by means of signal processing, means (16, 17, 18, 19) for generating several radiation directions are present, so that a plurality of intersection points of the radiation paths within an image exposure region result, and a signal processing circuit (20) coupled with said detectors for determining the radiation transparency in the patient (5) for every intersection point of a plane (S) parallel to the patient support (6), the radiation source emitting several ray fans (8, 9) at different directions, a detector array (10, 11) for receiving each ray fan, and the radiation source and all detector arrays (10, 11) being stationarily arranged.
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) | 1986-10-17 | 1987-04-18 | 1987-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-17 | 1991-04-18 | 1991-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-17 | 1995-04-18 | 1995-10-18 | $7700.00 | Window Closed / Lapsed |