IT1215988B - Sul contorno di un oggetto in metodo per ottenere informazioni tomografia ad angolo limitato. - Google Patents

Sul contorno di un oggetto in metodo per ottenere informazioni tomografia ad angolo limitato.

Info

Publication number
IT1215988B
IT1215988B IT8819647A IT1964788A IT1215988B IT 1215988 B IT1215988 B IT 1215988B IT 8819647 A IT8819647 A IT 8819647A IT 1964788 A IT1964788 A IT 1964788A IT 1215988 B IT1215988 B IT 1215988B
Authority
IT
Italy
Prior art keywords
contour
object method
tomography information
angle tomography
obtaining limited
Prior art date
Application number
IT8819647A
Other languages
English (en)
Other versions
IT8819647A0 (it
Inventor
Kwok Cheong Tam
Original Assignee
Gen Electric
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 Gen Electric filed Critical Gen Electric
Publication of IT8819647A0 publication Critical patent/IT8819647A0/it
Application granted granted Critical
Publication of IT1215988B publication Critical patent/IT1215988B/it

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
    • A61B6/08—Auxiliary means for directing the radiation beam to a particular spot, e.g. using light beams
    • 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
    • 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
IT8819647A 1987-04-01 1988-03-04 Sul contorno di un oggetto in metodo per ottenere informazioni tomografia ad angolo limitato. IT1215988B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/032,804 US4888693A (en) 1987-04-01 1987-04-01 Method to obtain object boundary information in limited-angle computerized tomography

Publications (2)

Publication Number Publication Date
IT8819647A0 IT8819647A0 (it) 1988-03-04
IT1215988B true IT1215988B (it) 1990-02-22

Family

ID=21866892

Family Applications (1)

Application Number Title Priority Date Filing Date
IT8819647A IT1215988B (it) 1987-04-01 1988-03-04 Sul contorno di un oggetto in metodo per ottenere informazioni tomografia ad angolo limitato.

Country Status (7)

Country Link
US (1) US4888693A (it)
JP (1) JPS63256843A (it)
DE (1) DE3806110A1 (it)
FR (1) FR2613487B1 (it)
GB (1) GB2203620B (it)
IT (1) IT1215988B (it)
TR (1) TR25873A (it)

Families Citing this family (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4920491A (en) * 1988-05-16 1990-04-24 General Electric Company Enhancement of image quality by utilization of a priori information
US5053958A (en) * 1988-06-06 1991-10-01 General Electric Company Method to reduce image reconstruction time in limited-angle ct systems including using initial reconstruction valves for measured projection data during each iteration
US4969110A (en) * 1988-08-01 1990-11-06 General Electric Company Method of using a priori information in computerized tomography
US5032990A (en) * 1989-05-30 1991-07-16 General Electric Company Translate rotate scanning method for x-ray imaging
US5233518A (en) * 1989-11-13 1993-08-03 General Electric Company Extrapolative reconstruction method for helical scanning
IL93215A0 (en) * 1990-01-30 1990-11-05 Elscint Ltd Biopsy needle positioning device
US5270926A (en) * 1990-12-21 1993-12-14 General Electric Company Method and apparatus for reconstructing a three-dimensional computerized tomography (CT) image of an object from incomplete cone beam projection data
RU2012872C1 (ru) * 1991-05-14 1994-05-15 Виктор Натанович Ингал Способ получения изображения внутренней структуры объекта
US5396528A (en) * 1991-06-28 1995-03-07 General Electric Company Tomographic image reconstruction using cross-plane rays
US5357429A (en) * 1992-04-02 1994-10-18 Levy Richard A Three-dimensional model generation using multiple angle tomographic scan planes
US5469486A (en) * 1992-08-07 1995-11-21 General Electric Company Projection domain reconstruction method for helical scanning computed tomography apparatus with multi-column detector array employing overlapping beams
US5611026A (en) * 1992-12-21 1997-03-11 General Electric Company Combining a priori data with partial scan data to project three dimensional imaging of arbitrary objects with computerized tomography
US5319693A (en) * 1992-12-30 1994-06-07 General Electric Company Three dimensional computerized tomography scanning configuration for imaging large objects with smaller area detectors
US5313513A (en) * 1993-05-11 1994-05-17 The United States Of America As Represented By The Secretary Of The Navy Annular computed tomography
US5802137A (en) * 1993-08-16 1998-09-01 Commonwealth Scientific And Industrial Research X-ray optics, especially for phase contrast imaging
US6201888B1 (en) 1998-02-18 2001-03-13 International Business Machines Corporation System and method for restoring, describing and graphically displaying noise-corrupted boundaries in tomography images
US6026142A (en) * 1998-04-02 2000-02-15 International Business Machines Corporation System and method for boundary detection in tomographic images by geometry-constrained edge detection of projected data
US6870896B2 (en) 2000-12-28 2005-03-22 Osmic, Inc. Dark-field phase contrast imaging
US6804324B2 (en) 2001-03-01 2004-10-12 Osmo, Inc. X-ray phase contrast imaging using a fabry-perot interferometer concept
US7042974B2 (en) * 2004-05-20 2006-05-09 Eastman Kodak Company Method for reconstructing tomographic images
US7203267B2 (en) * 2004-06-30 2007-04-10 General Electric Company System and method for boundary estimation using CT metrology
DE102005022540B4 (de) * 2005-05-17 2007-07-05 Siemens Ag Verfahren zur Minimierung von Bildartefakten und medizinisches Bildgebungssystem
US7477720B2 (en) * 2005-06-28 2009-01-13 University Of Utah Research Foundation Cone-beam reconstruction using backprojection of locally filtered projections and X-ray CT apparatus
WO2007095312A2 (en) 2006-02-13 2007-08-23 University Of Chicago Image reconstruction from limited or incomplete data
US7813470B2 (en) * 2006-04-13 2010-10-12 Shimadzu Corporation Three-dimensional contents determination method using transmitted x-ray
CN101071111B (zh) 2006-05-08 2011-05-11 清华大学 一种多视角航空集装箱安全检查系统及方法
US8442353B2 (en) * 2006-08-03 2013-05-14 The Regents Of The University Of California Incorporation of mathematical constraints in methods for dose reduction and image enhancement in tomography
CN101495038A (zh) * 2006-08-03 2009-07-29 加州大学董事会 层析中剂量减少和图像增强的迭代方法
US7840053B2 (en) * 2007-04-05 2010-11-23 Liao Hstau Y System and methods for tomography image reconstruction
US8126108B2 (en) 2007-04-18 2012-02-28 Agency For Science, Technology And Research Method and apparatus for reorientated resconstruction of computed tomography images of planar objects
EP2249705A4 (en) * 2008-01-30 2014-06-25 Univ California DOSE REDUCTION AND ENHANCEMENT OF TOMOGRAPHIC IMAGE BY USING THE ENVIRONMENT OF THE OBJECT AS DYNAMIC CONSTRAINTS
US8611626B2 (en) * 2009-04-30 2013-12-17 The Regents Of The University Of California System and methods for fast implementation of equally-sloped tomography
US8189735B2 (en) * 2010-07-22 2012-05-29 General Electric Company System and method for reconstruction of X-ray images
EP2677936B1 (en) * 2011-02-25 2021-09-29 Smiths Heimann GmbH Image reconstruction based on parametric models
US11408836B2 (en) 2019-04-01 2022-08-09 General Electric Company Method for inspecting components using computed tomography
EP3933339B1 (en) * 2020-06-30 2024-03-20 Mitutoyo Corporation Method and computer program product for filtering a measurement data set usable for specifying and/or verifying an internal feature of a workpiece

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4506327A (en) * 1981-11-23 1985-03-19 General Electric Company Limited-angle imaging using multiple energy scanning
JPS61220628A (ja) * 1985-03-28 1986-09-30 株式会社　日立メデイコ Ｘ線動態像計測装置
DE3716988A1 (de) * 1986-06-23 1988-01-14 Gen Electric Verfahren zum rekonstruieren von objekten aus abtastungen mit begrenztem winkel bei der computertomographie

Also Published As

Publication number Publication date
DE3806110A1 (de) 1988-10-13
GB2203620A (en) 1988-10-19
GB8804719D0 (en) 1988-03-30
JPS63256843A (ja) 1988-10-24
IT8819647A0 (it) 1988-03-04
US4888693A (en) 1989-12-19
FR2613487B1 (fr) 1990-06-01
TR25873A (tr) 1993-08-23
GB2203620B (en) 1991-06-12
FR2613487A1 (fr) 1988-10-07

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Legal Events

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TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19960327