ES447778A1 - Computed tomography apparatus - Google Patents

Computed tomography apparatus

Info

Publication number
ES447778A1
ES447778A1 ES447778A ES447778A ES447778A1 ES 447778 A1 ES447778 A1 ES 447778A1 ES 447778 A ES447778 A ES 447778A ES 447778 A ES447778 A ES 447778A ES 447778 A1 ES447778 A1 ES 447778A1
Authority
ES
Spain
Prior art keywords
emission
absorption
measurements
series
layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
ES447778A
Other languages
Spanish (es)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of ES447778A1 publication Critical patent/ES447778A1/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/02—Arrangements for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
    • A61B6/03—Computed tomography [CT]
    • A61B6/032—Transmission computed tomography [CT]
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T11/00—2D [Two Dimensional] image generation
    • G06T11/003—Reconstruction from projections, e.g. tomography

Landscapes

  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Medical Informatics (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Radiology & Medical Imaging (AREA)
  • Molecular Biology (AREA)
  • Biophysics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Optics & Photonics (AREA)
  • Pathology (AREA)
  • Pulmonology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • General Physics & Mathematics (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Image Analysis (AREA)
  • Nuclear Medicine (AREA)

Abstract

A device for determining the spatial distribution of the absorption or emission of radiation in a layer of a body, the absorption or emission of the body being measured in a large number of series of measurements in a large number of directions in the layer by means of of a radiation source and a detector, each series of measurements producing a number of measurement values of absorption or emission in bands extending at least approximately parallel to each other, with absorption or emission being calculated and displayed at points of image of the layer based on said measurement values, characterized in that an assignment device (10 ... 16; 21 ... 27) is arranged which assigns the measured value or a value (m1 ... M6) derivative thereof to each image point of the layer to be examined for each series of measurements, having been obtained the mentioned value in a band (1 ... 6) in which the pertinent image point is located, being stored and superimposed on a summing and storage device the values (m1 ... M6) assigned to the image points that have been obtained from all the series of measurements, the superimposed values being visualized by means of a visualization device, being displayed each time the average value of the absorption or emission in different adjacent image points in the region determined by these image points. (Machine-translation by Google Translate, not legally binding)
ES447778A 1975-05-13 1976-05-11 Computed tomography apparatus Expired ES447778A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19752521171 DE2521171A1 (en) 1975-05-13 1975-05-13 ARRANGEMENT FOR DETERMINING THE DISTRIBUTION OF ABSORPTION OR EMISSION OF RADIATION IN A PLANE OF A BODY

Publications (1)

Publication Number Publication Date
ES447778A1 true ES447778A1 (en) 1977-06-16

Family

ID=5946398

Family Applications (1)

Application Number Title Priority Date Filing Date
ES447778A Expired ES447778A1 (en) 1975-05-13 1976-05-11 Computed tomography apparatus

Country Status (8)

Country Link
JP (1) JPS51146884A (en)
BE (1) BE841756A (en)
CA (1) CA1061478A (en)
DE (1) DE2521171A1 (en)
ES (1) ES447778A1 (en)
FR (1) FR2311358A1 (en)
GB (1) GB1553857A (en)
IT (1) IT1061971B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2556012A1 (en) * 1975-12-12 1977-06-16 Philips Patentverwaltung PROCEDURE AND ARRANGEMENT FOR DETERMINING THE SPATIAL DISTRIBUTION OF RADIATION IN ONE PLANE OF A BODY
NL7902015A (en) * 1979-03-14 1980-09-16 Philips Nv METHOD AND APPARATUS FOR DETERMINING A RADIATION ABSORPTION DISTRIBUTION IN PART OF A BODY.
JPS58118735A (en) * 1982-01-06 1983-07-14 株式会社東芝 Computer tomography apparatus
US5015856A (en) * 1990-03-28 1991-05-14 E. I. Du Pont De Nemours And Company Automated process for permeability determinations of barrier resins
EP1964055A1 (en) 2005-12-15 2008-09-03 Philips Intellectual Property & Standards GmbH Advanced convergence for multiple iterative algorithm
US9029760B2 (en) 2009-07-07 2015-05-12 Board Of Regents, The University Of Texas System Liquid scintillator for 3D dosimetry for radiotherapy modalities

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1283915A (en) * 1968-08-23 1972-08-02 Emi Ltd A method of and apparatus for examination of a body by radiation such as x or gamma radiation
GB1464864A (en) * 1973-05-23 1977-02-16 Emi Ltd Data processing techniques

Also Published As

Publication number Publication date
BE841756A (en) 1976-11-12
GB1553857A (en) 1979-10-10
DE2521171A1 (en) 1976-11-25
FR2311358A1 (en) 1976-12-10
FR2311358B1 (en) 1982-10-15
IT1061971B (en) 1983-04-30
CA1061478A (en) 1979-08-28
JPS51146884A (en) 1976-12-16

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