JPH08509408A - 円すい状ビームデータからの画像の再構成 - Google Patents
円すい状ビームデータからの画像の再構成Info
- Publication number
- JPH08509408A JPH08509408A JP7521286A JP52128695A JPH08509408A JP H08509408 A JPH08509408 A JP H08509408A JP 7521286 A JP7521286 A JP 7521286A JP 52128695 A JP52128695 A JP 52128695A JP H08509408 A JPH08509408 A JP H08509408A
- Authority
- JP
- Japan
- Prior art keywords
- data
- array
- beam data
- cone
- imaging system
- 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.)
- Pending
Links
Classifications
-
- 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
- G06T11/008—Specific post-processing after tomographic reconstruction, e.g. voxelisation, metal artifact correction
-
- 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]
-
- 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
-
- 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
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR 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
- 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
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Pulmonology (AREA)
- Radiology & Medical Imaging (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Apparatus For Radiation Diagnosis (AREA)
- Image Processing (AREA)
Abstract
Description
Claims (1)
- 【特許請求の範囲】 1. コンピュータ断層撮影イメージングシステム(図2)において 発生源からの円すい状ビームの中の放射される光子を受ける検出素子の二次元 アレー、 上記検出素子のアレーが中心軸のまわりを回転する間の一連のビューにおいて 上記検出素子のアレーから円すい状ビームデータの二次元アレーを取得するディ ジタル取得システム、 上記円すい状ビームデータを受けて、それをフィルタリングするフィルタ、 上記フィルタリングされた円すい状ビームデータを逆投 上記円すい状ビームデータを受けて、上記二次元の一つの次元に沿って上記円 すい状ビームデータの中の値を加算することにより、行和データの一次元アレー を形成する行加算手段、 上記行和データをフィルタリングする手段、 上記フィルタリングされた行和データを逆投影すること 加算手段 を含むコンピュータ断層撮影イメージングシステム。 2. 上記円すい状ビームデータを受けて、この受けた 円すい状ビームデータによって与えられていない値を推定する手段、および上記 推定された値を受けて、補正された て上記画像スライスを作成する手段である請求項1記載のコンピュータ断層撮影 イメージングシステム。 3. 上記フィルタおよび上記行加算手段に上記円すい状ビームデータを印加 する前に、上記円すい状ビームデータに重み付けする手段を含んでいる請求項1 記載のコンピュータ断層撮影イメージングシステム。 4. 上記発生源がX線源であって、上記中心軸を挟んで上記検出素子のアレ ーと向かい合って位置し、上記一連のビューの取得の間、上記検出素子のアレー と上記X線源が共に上記中心軸を中心として回転する請求項1記載のコンピュー タ断層撮影イメージングシステム。 5. 上記中心軸を中心として上記X線源と上記検出素子のアレーとの間の三 次元領域に対するX線減衰データを得るために、取得された上記円すい状ビーム データが前処 通った複数の二次元画像スライスが作成される請求項4記載のコンピュータ断層 撮影イメージングシステム。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/194,894 US5400255A (en) | 1994-02-14 | 1994-02-14 | Reconstruction of images from cone beam data |
US08/194,894 | 1994-02-14 | ||
PCT/US1995/001532 WO1995022115A1 (en) | 1994-02-14 | 1995-02-06 | Reconstruction of images from cone beam data |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH08509408A true JPH08509408A (ja) | 1996-10-08 |
Family
ID=22719296
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7521286A Pending JPH08509408A (ja) | 1994-02-14 | 1995-02-06 | 円すい状ビームデータからの画像の再構成 |
Country Status (5)
Country | Link |
---|---|
US (1) | US5400255A (ja) |
JP (1) | JPH08509408A (ja) |
DE (1) | DE19580249T1 (ja) |
IL (1) | IL112556A (ja) |
WO (1) | WO1995022115A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003175028A (ja) * | 2001-10-11 | 2003-06-24 | Ge Medical Systems Global Technology Co Llc | 複数の副画像を用いた画像再構成による円錐ビームctスキャナ |
JP2007139620A (ja) * | 2005-11-18 | 2007-06-07 | Uni-Hite System Corp | 広角コーンビームct装置、画像再構成法及びプログラム |
Families Citing this family (41)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5473655A (en) * | 1994-07-21 | 1995-12-05 | General Electric Company | Artifact reduction by z-dependent filtration of three-dimensional cone beam data |
US5757951A (en) * | 1994-12-20 | 1998-05-26 | Picker International, Inc. | Correction of off-focal radiation |
FR2736455B1 (fr) * | 1995-07-03 | 1997-08-08 | Commissariat Energie Atomique | Procede de reconstruction d'une image 3d avec amelioration du contraste et de la resolution et application de ce procede a la realisation d'une cartographie d'attenuation d'un objet |
US5784481A (en) * | 1996-06-25 | 1998-07-21 | General Electric Company | CT cone beam image reconstruction with circle and line scan path |
US5706325A (en) * | 1996-12-05 | 1998-01-06 | General Electric Company | Exact regional reconstruction of longitudinally-unbounded objects using a circle-and-line cone beam tomographic system |
US6075836A (en) | 1997-07-03 | 2000-06-13 | University Of Rochester | Method of and system for intravenous volume tomographic digital angiography imaging |
US5999587A (en) * | 1997-07-03 | 1999-12-07 | University Of Rochester | Method of and system for cone-beam tomography reconstruction |
AU776340B2 (en) * | 1997-07-03 | 2004-09-02 | University Of Rochester | Method of and system for cone-beam tomography reconstruction |
US6002739A (en) * | 1998-04-28 | 1999-12-14 | Hewlett Packard Company | Computed tomography with iterative reconstruction of thin cross-sectional planes |
US6185271B1 (en) | 1999-02-16 | 2001-02-06 | Richard Estyn Kinsinger | Helical computed tomography with feedback scan control |
US6459754B1 (en) | 1999-10-27 | 2002-10-01 | Ge Medical Systems Global Technology Company, Llc | Methods and apparatus for cone beam multislice CT correction |
US6480565B1 (en) | 1999-11-18 | 2002-11-12 | University Of Rochester | Apparatus and method for cone beam volume computed tomography breast imaging |
US6898583B1 (en) | 2000-01-24 | 2005-05-24 | Sony Corporation | Method and apparatus of creating application-specific, non-uniform wavelet transforms |
US6876779B2 (en) * | 2000-01-24 | 2005-04-05 | Sony Côrporation | Method and apparatus of reconstructing audio/video/image data from higher moment data |
US6976012B1 (en) | 2000-01-24 | 2005-12-13 | Sony Corporation | Method and apparatus of using a neural network to train a neural network |
US6504892B1 (en) | 2000-10-13 | 2003-01-07 | University Of Rochester | System and method for cone beam volume computed tomography using circle-plus-multiple-arc orbit |
US6477221B1 (en) | 2001-02-16 | 2002-11-05 | University Of Rochester | System and method for fast parallel cone-beam reconstruction using one or more microprocessors |
US7945021B2 (en) * | 2002-12-18 | 2011-05-17 | Varian Medical Systems, Inc. | Multi-mode cone beam CT radiotherapy simulator and treatment machine with a flat panel imager |
JP2006517667A (ja) * | 2003-01-30 | 2006-07-27 | シデック テクノロジーズ アーベー | 高解像度三次元再構成方法 |
SE526941C2 (sv) * | 2003-01-30 | 2005-11-22 | Sidec Technologies Ab | Förfarande för 3D-återskapning med hög upplösning |
US7209535B2 (en) * | 2003-06-20 | 2007-04-24 | Wisconsin Alumni Research Foundation | Fourier space tomographic image reconstruction method |
US6990167B2 (en) * | 2003-08-29 | 2006-01-24 | Wisconsin Alumni Research Foundation | Image reconstruction method for divergent beam scanner |
US8774355B2 (en) * | 2004-06-30 | 2014-07-08 | General Electric Company | Method and apparatus for direct reconstruction in tomosynthesis imaging |
EP1828985A1 (en) * | 2004-11-24 | 2007-09-05 | Wisconsin Alumni Research Foundation | Fan-beam and cone-beam image reconstruction using filtered backprojection of differentiated projection data |
US7640607B2 (en) | 2005-04-29 | 2010-01-05 | Varian Medical Systems, Inc. | Patient support systems |
US7880154B2 (en) | 2005-07-25 | 2011-02-01 | Karl Otto | Methods and apparatus for the planning and delivery of radiation treatments |
DE102005037368A1 (de) * | 2005-08-08 | 2007-02-15 | Siemens Ag | Verfahren zur Berechnung computertomographischer Aufnahmen aus Detektordaten eines CT's mit mindestens zwei Strahlenquellen |
EP2088925B8 (en) | 2006-11-17 | 2015-06-17 | Varian Medical Systems, Inc. | Dynamic patient positioning system |
USRE46953E1 (en) | 2007-04-20 | 2018-07-17 | University Of Maryland, Baltimore | Single-arc dose painting for precision radiation therapy |
US20090285356A1 (en) * | 2008-05-16 | 2009-11-19 | Sirona Dental Systems Gmbh | System and method for patient positioning in cone-beam tomography |
DE102009042922B4 (de) * | 2009-09-24 | 2019-01-24 | Siemens Healthcare Gmbh | Verfahren und Vorrichtung zur Bildbestimmung aus beim Durchlaufen einer Trajektorie aufgenommenen Röntgenprojektionen |
EP2585854B1 (en) | 2010-06-22 | 2020-03-18 | Varian Medical Systems International AG | System and method for estimating and manipulating estimated radiation dose |
US8805037B2 (en) * | 2011-05-31 | 2014-08-12 | General Electric Company | Method and system for reconstruction of tomographic images |
US9091628B2 (en) | 2012-12-21 | 2015-07-28 | L-3 Communications Security And Detection Systems, Inc. | 3D mapping with two orthogonal imaging views |
US9364191B2 (en) | 2013-02-11 | 2016-06-14 | University Of Rochester | Method and apparatus of spectral differential phase-contrast cone-beam CT and hybrid cone-beam CT |
US20150362428A1 (en) * | 2014-06-12 | 2015-12-17 | John F. Federici | System and method for elimination of fresnel reflection boundary effects and beam steering in pulsed terahertz computed tomography |
US9427205B1 (en) | 2015-03-20 | 2016-08-30 | General Electic Company | Systems and methods for artifact removal for computed tomography imaging |
CN104888356B (zh) * | 2015-06-30 | 2018-03-02 | 瑞地玛医学科技有限公司 | 影像引导及呼吸运动分析系统 |
CN105115874B (zh) * | 2015-08-18 | 2018-02-02 | 中国石油天然气股份有限公司 | 多源信息融合的多组分三维数字岩心构建方法 |
US10013780B2 (en) | 2016-02-29 | 2018-07-03 | General Electric Company | Systems and methods for artifact removal for computed tomography imaging |
US10806409B2 (en) | 2016-09-23 | 2020-10-20 | Varian Medical Systems International Ag | Medical systems with patient supports |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4057727A (en) * | 1976-10-22 | 1977-11-08 | G. D. Searle & Co. | Positron imaging system with improved count rate and tomographic capability |
US4752691A (en) * | 1986-06-23 | 1988-06-21 | Siemens Gammasonics, Inc. | Method and apparatus for compensating finite angular resolution in collimated scintillation cameras |
US5257183A (en) * | 1990-12-21 | 1993-10-26 | General Electric Company | Method and apparatus for converting cone beam X-ray projection data to planar integral and reconstructing a three-dimensional computerized tomography (CT) image of an object |
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 |
US5170439A (en) * | 1991-06-11 | 1992-12-08 | Picker International, Inc. | Cone beam reconstruction using combined circle and line orbits |
US5291402A (en) * | 1992-08-07 | 1994-03-01 | General Electric Company | Helical scanning computed tomography apparatus |
-
1994
- 1994-02-14 US US08/194,894 patent/US5400255A/en not_active Expired - Lifetime
-
1995
- 1995-02-06 WO PCT/US1995/001532 patent/WO1995022115A1/en active Application Filing
- 1995-02-06 DE DE19580249T patent/DE19580249T1/de not_active Withdrawn
- 1995-02-06 JP JP7521286A patent/JPH08509408A/ja active Pending
- 1995-02-06 IL IL112556A patent/IL112556A/xx active IP Right Grant
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003175028A (ja) * | 2001-10-11 | 2003-06-24 | Ge Medical Systems Global Technology Co Llc | 複数の副画像を用いた画像再構成による円錐ビームctスキャナ |
JP4558266B2 (ja) * | 2001-10-11 | 2010-10-06 | 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 | 複数の副画像を用いた画像再構成による円錐ビームctスキャナ |
JP2007139620A (ja) * | 2005-11-18 | 2007-06-07 | Uni-Hite System Corp | 広角コーンビームct装置、画像再構成法及びプログラム |
Also Published As
Publication number | Publication date |
---|---|
DE19580249T1 (de) | 1996-03-07 |
US5400255A (en) | 1995-03-21 |
IL112556A0 (en) | 1995-05-26 |
WO1995022115A1 (en) | 1995-08-17 |
IL112556A (en) | 1997-09-30 |
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