JPH0439861B2 - - Google Patents

Info

Publication number
JPH0439861B2
JPH0439861B2 JP62301949A JP30194987A JPH0439861B2 JP H0439861 B2 JPH0439861 B2 JP H0439861B2 JP 62301949 A JP62301949 A JP 62301949A JP 30194987 A JP30194987 A JP 30194987A JP H0439861 B2 JPH0439861 B2 JP H0439861B2
Authority
JP
Japan
Prior art keywords
data
fourier transform
ray
frequency component
processing
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
JP62301949A
Other languages
English (en)
Japanese (ja)
Other versions
JPH01141646A (ja
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 filed Critical
Priority to JP62301949A priority Critical patent/JPH01141646A/ja
Priority to PCT/JP1988/001211 priority patent/WO1989005121A1/ja
Publication of JPH01141646A publication Critical patent/JPH01141646A/ja
Publication of JPH0439861B2 publication Critical patent/JPH0439861B2/ja
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
    • 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
    • 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)
  • Pathology (AREA)
  • General Health & Medical Sciences (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Pulmonology (AREA)
  • Medical Informatics (AREA)
  • Radiology & Medical Imaging (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Immunology (AREA)
  • Biochemistry (AREA)
  • Biophysics (AREA)
  • Analytical Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Optics & Photonics (AREA)
  • Biomedical Technology (AREA)
  • General Physics & Mathematics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Image Analysis (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • Image Processing (AREA)
JP62301949A 1987-11-30 1987-11-30 フーリエ変換形ｘ線ｃｔ Granted JPH01141646A (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP62301949A JPH01141646A (ja) 1987-11-30 1987-11-30 フーリエ変換形ｘ線ｃｔ
PCT/JP1988/001211 WO1989005121A1 (fr) 1987-11-30 1988-11-30 Procede de formation d'images dans une installation de tomographie informatisee a rayons radioactifs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62301949A JPH01141646A (ja) 1987-11-30 1987-11-30 フーリエ変換形ｘ線ｃｔ

Publications (2)

Publication Number Publication Date
JPH01141646A JPH01141646A (ja) 1989-06-02
JPH0439861B2 true JPH0439861B2 (2) 1992-06-30

Family

ID=17903050

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62301949A Granted JPH01141646A (ja) 1987-11-30 1987-11-30 フーリエ変換形ｘ線ｃｔ

Country Status (2)

Country Link
JP (1) JPH01141646A (2)
WO (1) WO1989005121A1 (2)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100387195C (zh) * 2003-11-07 2008-05-14 Ge医疗系统环球技术有限公司 偏移量测量方法、身体活动检测方法及x射线ct装置
WO2008017076A2 (en) * 2006-08-03 2008-02-07 The Regents Of The University Of California Iterative methods for dose reduction and image enhancement in tomography
US7924983B2 (en) 2008-06-30 2011-04-12 Varian Medical Systems, Inc. Thermionic emitter designed to control electron beam current profile in two dimensions

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61290573A (ja) * 1985-06-19 1986-12-20 Hitachi Medical Corp Ｘ線ｃｔ装置

Also Published As

Publication number Publication date
JPH01141646A (ja) 1989-06-02
WO1989005121A1 (fr) 1989-06-15

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