FR2338031A1 - Appareil de tomographie axiale avec correction du coefficient de diffusion du rayonnement - Google Patents

Appareil de tomographie axiale avec correction du coefficient de diffusion du rayonnement

Info

Publication number
FR2338031A1
FR2338031A1 FR7700863A FR7700863A FR2338031A1 FR 2338031 A1 FR2338031 A1 FR 2338031A1 FR 7700863 A FR7700863 A FR 7700863A FR 7700863 A FR7700863 A FR 7700863A FR 2338031 A1 FR2338031 A1 FR 2338031A1
Authority
FR
France
Prior art keywords
correction
coefficient
tomography device
axial tomography
radiation diffusion
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
FR7700863A
Other languages
English (en)
Other versions
FR2338031B1 (fr
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.)
EMI Ltd
Original Assignee
EMI Ltd
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 EMI Ltd filed Critical EMI Ltd
Publication of FR2338031A1 publication Critical patent/FR2338031A1/fr
Application granted granted Critical
Publication of FR2338031B1 publication Critical patent/FR2338031B1/fr
Granted legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
    • A61B6/48—Diagnostic techniques
    • A61B6/483—Diagnostic techniques involving scattered radiation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
    • A61B6/02—Devices for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
    • A61B6/03—Computerised tomographs
    • 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
    • G06T11/005—Specific pre-processing for tomographic reconstruction, e.g. calibration, source positioning, rebinning, scatter correction, retrospective gating
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05G—X-RAY TECHNIQUE
    • H05G1/00—X-ray apparatus involving X-ray tubes; Circuits therefor
    • H05G1/08—Electrical details
    • H05G1/66—Circuit arrangements for X-ray tubes with target movable relatively to the anode
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
    • A61B6/40—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for generating radiation specially adapted for radiation diagnosis
    • A61B6/4021—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for generating radiation specially adapted for radiation diagnosis involving movement of the focal spot
    • A61B6/4028—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for generating radiation specially adapted for radiation diagnosis involving movement of the focal spot resulting in acquisition of views from substantially different positions, e.g. EBCT
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
    • A61B6/54—Control of apparatus or devices for radiation diagnosis
    • A61B6/548—Remote control of the apparatus or devices
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S378/00—X-ray or gamma ray systems or devices
    • Y10S378/901—Computer tomography program or processor

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Medical Informatics (AREA)
  • Physics & Mathematics (AREA)
  • Biomedical Technology (AREA)
  • Molecular Biology (AREA)
  • Biophysics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Optics & Photonics (AREA)
  • Pathology (AREA)
  • Radiology & Medical Imaging (AREA)
  • Theoretical Computer Science (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)
  • Toxicology (AREA)
  • Pulmonology (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
FR7700863A 1976-01-15 1977-01-13 Appareil de tomographie axiale avec correction du coefficient de diffusion du rayonnement Granted FR2338031A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1497/76A GB1571800A (en) 1976-01-15 1976-01-15 Radiography

Publications (2)

Publication Number Publication Date
FR2338031A1 true FR2338031A1 (fr) 1977-08-12
FR2338031B1 FR2338031B1 (fr) 1981-12-24

Family

ID=9723021

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7700863A Granted FR2338031A1 (fr) 1976-01-15 1977-01-13 Appareil de tomographie axiale avec correction du coefficient de diffusion du rayonnement

Country Status (8)

Country Link
US (1) US4081681A (fr)
JP (1) JPS5293288A (fr)
DE (1) DE2702009C2 (fr)
FR (1) FR2338031A1 (fr)
GB (1) GB1571800A (fr)
HK (1) HK37681A (fr)
MY (1) MY8200058A (fr)
NL (1) NL184721C (fr)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5394787A (en) * 1977-01-31 1978-08-19 Toshiba Corp Tomographic diagnostic equipment by radiation
JPS5436780A (en) * 1977-08-26 1979-03-17 Hitachi Medical Corp Xxray detector
DE2821083A1 (de) * 1978-05-13 1979-11-22 Philips Patentverwaltung Anordnung zur ermittlung der raeumlichen absorptionsverteilung in einem ebenen untersuchungsbereich
AU523895B2 (en) * 1978-08-04 1982-08-19 Commonwealth Of Australia, The Ultrasonic echoscope
JPS5834033U (ja) * 1981-08-28 1983-03-05 三井造船株式会社 パイプ水圧試験機用シ−ル部材
CA1196691A (fr) * 1982-01-12 1985-11-12 Bradley Fry Systeme et methodes de reconstruction pour imagerie a impedance
NL8202417A (nl) * 1982-06-15 1984-01-02 Philips Nv Inrichting en werkwijze voor het verwerken van roentgenbeelden.
HU188196B (en) * 1982-08-19 1986-03-28 Medicor Muevek,Hu Firmware back-projector for ct systems
EP0105618B1 (fr) * 1982-09-07 1989-10-25 The Board Of Trustees Of The Leland Stanford Junior University Procédé et dispositif pour la production d'images à partir de rayons X avec compensation de la dispersion du rayonnement
JPS59151939A (ja) * 1983-02-08 1984-08-30 株式会社東芝 Ｘ線診断装置
JPS59151940A (ja) * 1983-02-18 1984-08-30 株式会社東芝 Ｘ線診断装置
JPS61249452A (ja) * 1985-04-30 1986-11-06 株式会社東芝 Ｘ線診断装置
JPS62191972A (ja) * 1986-02-18 1987-08-22 Toshiba Corp Ｘ線画像処理装置
US4897788A (en) * 1988-04-18 1990-01-30 General Electric Company Image correction for computed tomography to remove crosstalk artifacts
JP3408848B2 (ja) * 1993-11-02 2003-05-19 株式会社日立メディコ 散乱ｘ線補正法及びｘ線ｃｔ装置並びに多チャンネルｘ線検出器
FR2766044B1 (fr) * 1997-07-11 1999-10-08 Ge Medical Syst Sa Procede de traitement d'une sequence d'images radiologiques d'un objet
JP3919724B2 (ja) * 2003-09-19 2007-05-30 ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー 放射線計算断層画像装置および断層像データ生成方法

Family Cites Families (6)

* 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
FR2249517B1 (fr) * 1973-10-30 1976-10-01 Thomson Csf
GB1493594A (en) * 1974-01-31 1977-11-30 Emi Ltd Radiography
DE2559658A1 (de) 1974-08-28 1977-09-29 Emi Ltd Radiographisches geraet
GB1529799A (en) 1974-11-13 1978-10-25 Emi Ltd Radiography

Also Published As

Publication number Publication date
HK37681A (en) 1981-08-07
DE2702009A1 (de) 1977-07-28
MY8200058A (en) 1982-12-31
NL184721B (nl) 1989-05-16
US4081681A (en) 1978-03-28
FR2338031B1 (fr) 1981-12-24
JPS5293288A (en) 1977-08-05
NL7700410A (nl) 1977-07-19
NL184721C (nl) 1989-10-16
GB1571800A (en) 1980-07-16
DE2702009C2 (de) 1983-12-01
JPS5530856B2 (fr) 1980-08-14

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse