US4651335A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Patient support bodies including reference elements for a tomographic apparatus
Assignee: Siemens AG
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Filing: 1985-02-06
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Granted: 1987-03-17
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Expires: 2005-02-06
Abstract
Abstract Patient support elements, such as pillows, are disposed on opposite sides of an examination subject lying on a supporting bed in a tomographic apparatus. The patient support bodies include one or more reference elements having known composition and characteristics which are reproduced in the image at a display unit. Standardization of the measured values is thereby achieved in a manner which is independent of the apparatus itself.
Inventors
- 👤 Willi Kalender
- 👤 Guenter Schmitt
- 👤 Christoph Suess
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:50
CPC Classifications
A; A61; A61B; A61B6/00; A61B6/02; A61B6/03; A61B6/032; A61B6/40; A61B6/4035; A61G; A61G13/00; A61G13/10; A61G13/12; G; G01; G01N; G01N23/00; G01N23/02; G01N23/04; G01N23/046; A61G13/1205; A61G13/121; A61G13/1235; A61G13/1245; G01N2223/00; G01N2223/40; G01N2223/419; G01N2223/60; G01N2223/612
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
132 words
In a diagnostic apparatus for generating slice images of an examination subject having a subject-supporting bed, means for generating an x-radiation field in which said subject is disposed, a means for generating measured signals dependent on the material distribution of the examination subject based on attenuation of said x-radiation by said subject, and a computer for calculating picture element information of the examination subject slice from said measured signals, the improvement of: a plurality of patient support pillows disposed beneath said examination subject on said bed, said pillows being comprised of a material adapting to the shape of said examination subject, each pillow having at least one reference element therein, said reference element consisting of material having a known composition and x-radiation attenuation for use in monitoring the level of said x-radiation.
Claim 2
Dependent Claim
132 words
In a diagnostic apparatus for generating slice images of an examination subject having a subject-supporting bed, means for generating an x-radiation field in which said subject is disposed, a means for generating measured signals dependent on the material distribution of the examination subject based on attenuation of said x-radiation by said subject, and a computer for calculating picture element information of the examination subject slice from said measured signals, the improvement of: a plurality of patient support pillows disposed beneath said examination subject on said bed, said pillows being comprised of a material adapting to the shape of said examination subject, each pillow having at least one reference element therein, said reference element consisting of material having a known composition and x-radiation attenuation for use in monitoring the level of said x-radiation.
Claim 3
Dependent Claim
13 words
The improvement of claim 1 wherein said pillows are comprised of cellular material.
Claim 4
Dependent Claim
15 words
The improvement of claim 1 wherein said pillows are disposed symmetrically about said examination subject.
References Cited (Backward Citations)
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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) | 1990-03-16 | 1990-09-15 | 1991-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-16 | 1994-09-15 | 1995-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-16 | 1998-09-15 | 1999-03-17 | $7700.00 | Window Closed / Lapsed |