JPH0479259B2 - - Google Patents

Info

Publication number
JPH0479259B2
JPH0479259B2 JP62275181A JP27518187A JPH0479259B2 JP H0479259 B2 JPH0479259 B2 JP H0479259B2 JP 62275181 A JP62275181 A JP 62275181A JP 27518187 A JP27518187 A JP 27518187A JP H0479259 B2 JPH0479259 B2 JP H0479259B2
Authority
JP
Japan
Prior art keywords
data
output
ray
correction
reference value
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 - Lifetime
Application number
JP62275181A
Other languages
English (en)
Japanese (ja)
Other versions
JPH01119233A (ja
Inventor
Shigeru Matsumura
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.)
GE Healthcare Japan Corp
Original Assignee
Yokogawa Medical Systems 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 Yokogawa Medical Systems Ltd filed Critical Yokogawa Medical Systems Ltd
Priority to JP62275181A priority Critical patent/JPH01119233A/ja
Priority to US07/474,105 priority patent/US5065436A/en
Priority to EP88909367A priority patent/EP0395762B1/en
Priority to DE3850783T priority patent/DE3850783T2/de
Priority to PCT/JP1988/001113 priority patent/WO1989003658A1/ja
Publication of JPH01119233A publication Critical patent/JPH01119233A/ja
Publication of JPH0479259B2 publication Critical patent/JPH0479259B2/ja
Granted legal-status Critical Current

Links

Classifications

    • 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
    • H05G1/60—Circuit arrangements for obtaining a series of X-ray photographs or for X-ray cinematography
    • 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]
    • 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
    • A61B6/10—Safety means specially adapted therefor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
    • G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
    • G01N23/04—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material
    • G01N23/046—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material using tomography, e.g. 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
    • 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
    • H05G1/26—Measuring, controlling or protecting
    • H05G1/30—Controlling
    • H05G1/46—Combined control of different quantities, e.g. exposure time as well as voltage or current
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2223/00—Investigating materials by wave or particle radiation
    • G01N2223/40—Imaging
    • G01N2223/419—Imaging computed tomograph

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Medical Informatics (AREA)
  • Physics & Mathematics (AREA)
  • Radiology & Medical Imaging (AREA)
  • Theoretical Computer Science (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Pathology (AREA)
  • Surgery (AREA)
  • Pulmonology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Molecular Biology (AREA)
  • Optics & Photonics (AREA)
  • Animal Behavior & Ethology (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Biomedical Technology (AREA)
  • Biophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Immunology (AREA)
  • Toxicology (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
JP62275181A 1987-10-30 1987-10-30 Ｘ線断層撮影装置 Granted JPH01119233A (ja)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP62275181A JPH01119233A (ja) 1987-10-30 1987-10-30 Ｘ線断層撮影装置
US07/474,105 US5065436A (en) 1987-10-30 1988-10-31 X-ray computerized tomograph
EP88909367A EP0395762B1 (en) 1987-10-30 1988-10-31 X-ray tomograph
DE3850783T DE3850783T2 (de) 1987-10-30 1988-10-31 Röntgentomograph.
PCT/JP1988/001113 WO1989003658A1 (en) 1987-10-30 1988-10-31 X-ray tomograph

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62275181A JPH01119233A (ja) 1987-10-30 1987-10-30 Ｘ線断層撮影装置

Publications (2)

Publication Number Publication Date
JPH01119233A JPH01119233A (ja) 1989-05-11
JPH0479259B2 true JPH0479259B2 (en, 2012) 1992-12-15

Family

ID=17551802

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62275181A Granted JPH01119233A (ja) 1987-10-30 1987-10-30 Ｘ線断層撮影装置

Country Status (5)

Country Link
US (1) US5065436A (en, 2012)
EP (1) EP0395762B1 (en, 2012)
JP (1) JPH01119233A (en, 2012)
DE (1) DE3850783T2 (en, 2012)
WO (1) WO1989003658A1 (en, 2012)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9025431D0 (en) * 1990-11-22 1991-01-09 Advanced Tech Lab Three dimensional ultrasonic imaging
DE4129656C2 (de) * 1991-09-06 1994-02-10 Siemens Ag Wiedergabevorrichtung für Videosignale auf einem Monitor
EP0538707A1 (de) * 1991-10-25 1993-04-28 Heimann Systems GmbH & Co. KG Röntgenscanner
US5301108A (en) * 1993-02-01 1994-04-05 General Electric Company Computed tomography system with z-axis correction
US5406479A (en) * 1993-12-20 1995-04-11 Imatron, Inc. Method for rebinning and for correcting cone beam error in a fan beam computed tomographic scanner system
JP3547481B2 (ja) * 1994-04-19 2004-07-28 松下電器産業株式会社 映像信号処理方法および映像信号処理装置
US5937102A (en) * 1996-10-09 1999-08-10 California Institute Of Technology Image reconstruction
US6078639A (en) * 1997-11-26 2000-06-20 Picker International, Inc. Real time continuous CT imaging
US6461040B1 (en) * 1998-11-12 2002-10-08 Koninklijke Philips Electronics N.V. Apparatus and method to correct for position errors in diagnostic imaging
JP3847101B2 (ja) * 2001-05-22 2006-11-15 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 Ｘ線ｃｔ装置及び方法
JP3886895B2 (ja) * 2002-12-27 2007-02-28 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 Ｘ線データ収集装置およびｘ線ｃｔ装置
JP4717511B2 (ja) * 2005-05-20 2011-07-06 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 Ｘ線ｃｔ画像再構成方法およびｘ線ｃｔ装置
US11816757B1 (en) * 2019-12-11 2023-11-14 Meta Platforms Technologies, Llc Device-side capture of data representative of an artificial reality environment
US12361661B1 (en) 2022-12-21 2025-07-15 Meta Platforms Technologies, Llc Artificial reality (XR) location-based displays and interactions

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52104890A (en) * 1976-02-27 1977-09-02 Shimadzu Corp Tomography apparatus using x-ray
GB1577615A (en) * 1976-05-13 1980-10-29 Emi Ltd Radiography
US4068306A (en) 1976-07-12 1978-01-10 General Electric Co. X-ray data acquisition system and method for calibration
US4160906A (en) * 1977-06-23 1979-07-10 General Electric Company Anatomically coordinated user dominated programmer for diagnostic x-ray apparatus
JPS57168075U (en, 2012) * 1981-04-20 1982-10-22
DE3342353A1 (de) * 1983-11-23 1985-05-30 Siemens AG, 1000 Berlin und 8000 München Verfahren zum betrieb eines computertomographen
JPS61196945A (ja) * 1985-02-27 1986-09-01 横河メディカルシステム株式会社 Ｘ線断層撮影装置
JPS6247346A (ja) * 1985-08-27 1987-03-02 株式会社　日立メデイコ Ｘ線ｃｔ装置
US4903205A (en) * 1985-10-15 1990-02-20 Fuji Photo Film Co. Ltd. Method and apparatus for displaying radiation image, and method and apparatus for calculating unsharp mask signal used for the same
JPS62120838A (ja) * 1985-11-20 1987-06-02 株式会社　日立メデイコ Ｘ線断層撮影装置
US4731865A (en) * 1986-03-27 1988-03-15 General Electric Company Digital image correction
US4947323A (en) * 1986-05-22 1990-08-07 University Of Tennessee Research Corporation Method and apparatus for measuring small spatial dimensions of an object
US4975970A (en) * 1987-03-18 1990-12-04 General Electric Company Image display having automatic image adjustment
US4903310A (en) * 1987-04-20 1990-02-20 Fuji Photo Film Co. Ltd. Method of automatically determining imaged body posture in medical image display
DE4305090C2 (de) * 1993-02-19 1995-04-13 Webasto Karosseriesysteme Heckspoiler zum Leiten einer Windströmung an Fahrzeugen

Also Published As

Publication number Publication date
EP0395762A4 (en) 1991-04-10
JPH01119233A (ja) 1989-05-11
WO1989003658A1 (en) 1989-05-05
DE3850783D1 (de) 1994-08-25
EP0395762A1 (en) 1990-11-07
US5065436A (en) 1991-11-12
DE3850783T2 (de) 1994-10-27
EP0395762B1 (en) 1994-07-20

Similar Documents

Publication Publication Date Title
CN108158597B (zh) 确定原始x射线能量数据的方法、装置及ct设备
US6493416B1 (en) Method and apparatus for noise reduction in computed tomographic systems
JP5582514B2 (ja) Ｘ線ｃｔ装置
JPH0479259B2 (en, 2012)
US7394925B2 (en) Radiography apparatus and radiography method
US7920751B2 (en) Adaptive gradient weighting technique for detector bad cell correction
JP4363834B2 (ja) Ｘ線コンピュータ断層撮影装置
US5812628A (en) Methods and apparatus for detecting partial volume image artifacts
IL116573A (en) Leading algorithm for locating rings for image recovery
US6411671B2 (en) Method for reducing line artifacts in a CT image and device for implementing the method
EP3708082A1 (en) Image processing device, image processing method, radiation imaging device, and method and program for controlling radiation imaging device
WO1988004156A1 (en) Deconvolution processing method for x-ray tomographic equipment
JP2006102299A (ja) Ｘ線線量補正方法およびｘ線ｃｔ装置
US20050047551A1 (en) Method for tube spit correction based on high voltage output
US6466645B1 (en) Methods and apparatus for tube-spit correction
JP5406054B2 (ja) Ｘ線ｃｔ装置
JP4603086B2 (ja) プロジェクションデータ補正方法、プロジェクションデータ補正装置、記録媒体および放射線断層撮像装置
JP3544261B2 (ja) Ｘ線ｃｔ装置
JP4156311B2 (ja) データ補正方法およびｘ線ｃｔ装置
JP4064541B2 (ja) レファレンス信号生成方法および装置並びに放射線断層撮影装置
JPH05212027A (ja) Ｘ線ｃｔ装置
JPH06269443A (ja) Ｘ線ｃｔ装置
JP4451554B2 (ja) プロジェクションデータ補正方法、プロジェクションデータ補正装置、記録媒体および放射線断層撮像装置
JP4080738B2 (ja) Ｘ線コンピュータ断層撮影装置
JP2000023965A (ja) 放射線撮像装置

Legal Events

Date Code Title Description
R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

EXPY Cancellation because of completion of term