FR2378289A2 - Appareil et procede de reconstitution de donnees - Google Patents

Appareil et procede de reconstitution de donnees

Info

Publication number
FR2378289A2
FR2378289A2 FR7719156A FR7719156A FR2378289A2 FR 2378289 A2 FR2378289 A2 FR 2378289A2 FR 7719156 A FR7719156 A FR 7719156A FR 7719156 A FR7719156 A FR 7719156A FR 2378289 A2 FR2378289 A2 FR 2378289A2
Authority
FR
France
Prior art keywords
radiation
unabsorbed
operations
unscattered
addition
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.)
Granted
Application number
FR7719156A
Other languages
English (en)
French (fr)
Other versions
FR2378289B2 (enrdf_load_html_response
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.)
Varian Medical Systems Inc
Original Assignee
Varian Associates Inc
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
Priority claimed from US05/760,492 external-priority patent/US4149249A/en
Application filed by Varian Associates Inc filed Critical Varian Associates Inc
Publication of FR2378289A2 publication Critical patent/FR2378289A2/fr
Application granted granted Critical
Publication of FR2378289B2 publication Critical patent/FR2378289B2/fr
Granted 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 OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T11/00—2D [Two Dimensional] image generation
    • G06T11/003—Reconstruction from projections, e.g. tomography
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T11/00—2D [Two Dimensional] image generation
    • G06T11/003—Reconstruction from projections, e.g. tomography
    • G06T11/006—Inverse problem, transformation from projection-space into object-space, e.g. transform methods, back-projection, algebraic methods
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2211/00—Image generation
    • G06T2211/40—Computed tomography
    • G06T2211/421—Filtered back projection [FBP]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
    • Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Medical Informatics (AREA)
  • Surgery (AREA)
  • Veterinary Medicine (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Optics & Photonics (AREA)
  • Pathology (AREA)
  • Radiology & Medical Imaging (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Molecular Biology (AREA)
  • Biophysics (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Algebra (AREA)
  • Pulmonology (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Mathematical Physics (AREA)
  • Pure & Applied Mathematics (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Image Processing (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Image Analysis (AREA)
  • Medical Treatment And Welfare Office Work (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
FR7719156A 1977-01-19 1977-06-22 Appareil et procede de reconstitution de donnees Granted FR2378289A2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/760,492 US4149249A (en) 1975-12-23 1977-01-19 Apparatus and method for reconstructing data

Publications (2)

Publication Number Publication Date
FR2378289A2 true FR2378289A2 (fr) 1978-08-18
FR2378289B2 FR2378289B2 (enrdf_load_html_response) 1983-08-19

Family

ID=25059266

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7719156A Granted FR2378289A2 (fr) 1977-01-19 1977-06-22 Appareil et procede de reconstitution de donnees

Country Status (7)

Country Link
JP (1) JPS5396689A (enrdf_load_html_response)
CA (1) CA1111575A (enrdf_load_html_response)
DE (1) DE2735437A1 (enrdf_load_html_response)
FR (1) FR2378289A2 (enrdf_load_html_response)
IT (1) IT1151463B (enrdf_load_html_response)
NL (1) NL7706873A (enrdf_load_html_response)
SE (1) SE437763B (enrdf_load_html_response)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2422382A1 (fr) * 1978-04-15 1979-11-09 Philips Nv Procede et dispositif d'obtention d'images perfectionnees en tomographie a reconstruction d'images par ordinateur

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8204086A (nl) * 1982-10-22 1984-05-16 Philips Nv Werkwijze en inrichting voor het bepalen van een stralingsverzwakkingsverdeling in een vlak van een lichaam.
JPH0441844Y2 (enrdf_load_html_response) * 1984-11-02 1992-10-01
JP4585815B2 (ja) * 2004-09-03 2010-11-24 キヤノン株式会社 情報処理装置、撮影システム、吸収係数補正方法、及びコンピュータプログラム

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2240710A1 (enrdf_load_html_response) * 1973-08-18 1975-03-14 Emi Ltd
FR2292985A1 (fr) * 1974-11-29 1976-06-25 Univ Leland Stanford Junior Detecteur de rayons x ou g sensible a la position et procede de tomographie a trois dimensions utilisant ce detecteur
FR2336690A1 (fr) * 1975-12-23 1977-07-22 Varian Associates Appareil et procede de tomographie destines a la reconstitution de tranches planes a partir d'un rayonnement non absorbe et non diffuse

Family Cites Families (3)

* 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
GB1471531A (en) * 1973-04-25 1977-04-27 Emi Ltd Radiography
GB1537487A (en) * 1975-03-18 1978-12-29 Emi Ltd Radiography

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2240710A1 (enrdf_load_html_response) * 1973-08-18 1975-03-14 Emi Ltd
FR2292985A1 (fr) * 1974-11-29 1976-06-25 Univ Leland Stanford Junior Detecteur de rayons x ou g sensible a la position et procede de tomographie a trois dimensions utilisant ce detecteur
FR2336690A1 (fr) * 1975-12-23 1977-07-22 Varian Associates Appareil et procede de tomographie destines a la reconstitution de tranches planes a partir d'un rayonnement non absorbe et non diffuse

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2422382A1 (fr) * 1978-04-15 1979-11-09 Philips Nv Procede et dispositif d'obtention d'images perfectionnees en tomographie a reconstruction d'images par ordinateur

Also Published As

Publication number Publication date
JPS6314983B2 (enrdf_load_html_response) 1988-04-02
NL7706873A (nl) 1978-07-21
JPS5396689A (en) 1978-08-24
FR2378289B2 (enrdf_load_html_response) 1983-08-19
CA1111575A (en) 1981-10-27
IT1151463B (it) 1986-12-17
SE7707270L (sv) 1978-07-20
DE2735437A1 (de) 1978-07-20
SE437763B (sv) 1985-03-18

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Legal Events

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TP Transmission of property