Patent EP0041749A1 successfully refreshed from Google Patents.
EP0041749A1
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EP
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Medical radiation imaging apparatus
Assignee: Koninklijke Philips NV
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Filing: 1981-05-26
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Granted: —
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Expires: 2001-05-26
Abstract
Abstract A radiation imaging apparatus for forming three-dimensional image matrices includes means for displaying image information therefrom in scanograms which are also formed by means of the apparatus. In a scanogram thus supplemented, selected subsidiary regions are reproduced with a high resolution obtained from the image matrices and suitably positioned with respect to the patient.
Inventors
- 👤 Frans Wessel Zonneveld
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 09:42
CPC Classifications
A; A61; A61B; A61B6/00; A61B6/02; A61B6/03; A61B6/032; A61B8/00; A61B8/13; A61B8/14
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
81 words
A radiation imaging apparatus, comprising a detector which is composed of a series of individually readable detector elements and which is rotatable about a patient, either on its own or together with a radiation source, or which at least substantially surrounds the patient table, the patient table and at least the detector being arranged to be translatable with respect to one another, characterized in that there are provided means for transferring image information from a three-dimensional image matrix to a scanogram.
Claim 2
Dependent Claim
81 words
A radiation imaging apparatus, comprising a detector which is composed of a series of individually readable detector elements and which is rotatable about a patient, either on its own or together with a radiation source, or which at least substantially surrounds the patient table, the patient table and at least the detector being arranged to be translatable with respect to one another, characterized in that there are provided means for transferring image information from a three-dimensional image matrix to a scanogram.
Claim 3
Dependent Claim
46 words
A radiation imaging apparatus as claimed in Claim 1, characterized in that it is provided with an X-ray tube which is accommodated, together with the detector, in a support which is rotatable about the patient carrier, the patient carrier being translatable with respect to the support.
Claim 4
Dependent Claim
32 words
A radiation imaging apparatus as claimed in Claim 1, characterized in that the radiation to be measured is generated in a patient under examination, the detector being arranged to measure this radiation.
Claim 5
Dependent Claim
50 words
A radiation imaging apparatus as claimed in Claim 1, 2 or 3, characterized in that, in addition to the detector for measuring radiation emitted by an X-ray source and attenuated or scattered by a patient, .there is further provided a detector for measuring gamma radiation emitted by a patient.under examination.
Claim 6
Dependent Claim
43 words
A radiation imaging apparatus as claimed in any of the preceding Claims, characterized in that the patient carrier includes a drive mechanism for accurately defined, step-wise displacement of the patient carrier in a direction transverse to the planes of slices to be made.
Claim 7
Dependent Claim
38 words
A radiation imaging apparatus as claimed in any of the preceding Claims, characterized in that it comprises an arithmetic unit for selecting on the base of image orientation, profiles from scan-derived images and for composing a scanogram therefrom.
Claim 8
Dependent Claim
33 words
A radiation imaging apparatus as claimed in any of the preceding Claims, characterized in that for a simultaneous display of scanograms relating to different projection directions, a plurality of television monitors are provided.
Claim 9
Dependent Claim
37 words
A radiation imaging apparatus as claimed in Claim 1, 5, 6 or 7, characterized in. that the radiation source is formed by a high-frequency sound source, the detector being formed by a series of corresponding detector transducers.
Claim 10
Dependent Claim
54 words
A radiation imaging apparatus as claimed in Claim 1, 5, 6 or 7, characterized in that it is provided with a radiation source formed by an electromagnetic coil system for generating a magnetic alternating field in the MHz range, the detector being adapted to discriminate local differences in the radiation absorption in a patient.
Claim 11
Dependent Claim
50 words
A radiation imaging apparatus as claimed in Claim 1, 2, 5, 6 or 7, characterized in that it is provided with a high voltage X-ray tube, with a collimator for selecting a pencil like radiation beam detector being arranged to detect strong radiation occurring in a body to be examined.
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