SE7903602L - Sett och anordning for korrektion av polykromatisk aberration i datortomografibilder - Google Patents

Sett och anordning for korrektion av polykromatisk aberration i datortomografibilder

Info

Publication number
SE7903602L
SE7903602L SE7903602A SE7903602A SE7903602L SE 7903602 L SE7903602 L SE 7903602L SE 7903602 A SE7903602 A SE 7903602A SE 7903602 A SE7903602 A SE 7903602A SE 7903602 L SE7903602 L SE 7903602L
Authority
SE
Sweden
Prior art keywords
correction
computer tomography
tomography images
polychromatic
aberration
Prior art date
Application number
SE7903602A
Other languages
English (en)
Inventor
A Naparstek
Original Assignee
Philips Nv
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 Philips Nv filed Critical Philips Nv
Publication of SE7903602L publication Critical patent/SE7903602L/sv

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
    • A61B6/02—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
    • 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
SE7903602A 1978-04-28 1979-04-25 Sett och anordning for korrektion av polykromatisk aberration i datortomografibilder SE7903602L (sv)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/901,212 US4217641A (en) 1978-04-28 1978-04-28 Correction for polychromatic X-ray distortion in CT images

Publications (1)

Publication Number Publication Date
SE7903602L true SE7903602L (sv) 1979-10-29

Family

ID=25413756

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7903602A SE7903602L (sv) 1978-04-28 1979-04-25 Sett och anordning for korrektion av polykromatisk aberration i datortomografibilder

Country Status (8)

Country Link
US (1) US4217641A (sv)
JP (1) JPS54144189A (sv)
CA (1) CA1124890A (sv)
DE (1) DE2916486A1 (sv)
FR (1) FR2424590B1 (sv)
GB (1) GB2020939B (sv)
NL (1) NL7903199A (sv)
SE (1) SE7903602L (sv)

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US4789930A (en) * 1985-11-15 1988-12-06 Picker International, Inc. Energy dependent gain correction for radiation detection
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US4792900A (en) * 1986-11-26 1988-12-20 Picker International, Inc. Adaptive filter for dual energy radiographic imaging
FR2636752B1 (fr) * 1988-09-16 1990-10-26 Gen Electric Cgr Procede et systeme de correction des defauts d'images d'un scanner dus aux deplacements de ce dernier
US5008822A (en) * 1988-11-25 1991-04-16 Picker International, Inc. Combined high speed backprojection and forward projection processor for CT systems
US5133020A (en) * 1989-07-21 1992-07-21 Arch Development Corporation Automated method and system for the detection and classification of abnormal lesions and parenchymal distortions in digital medical images
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US5953444A (en) * 1997-10-22 1999-09-14 University Of Pennsylvania Method for improved correction of spectrum hardening artifacts in computed tomography images
US6282257B1 (en) 1999-06-23 2001-08-28 The Board Of Trustees Of The University Of Illinois Fast hierarchical backprojection method for imaging
US6263096B1 (en) 1999-06-23 2001-07-17 The Board Of Trustees Of The University Of Illinois Multilevel domain decomposition method for fast reprojection of images
US6351548B1 (en) 1999-06-23 2002-02-26 The Board Of Trustees Of The University Of Illinois Fast hierarchical reprojection algorithm for tomography
US6332035B1 (en) 1999-06-23 2001-12-18 The Board Of Trustees Of The University Of Illinois Fast hierarchical reprojection algorithms for 3D radon transforms
US6307911B1 (en) 1999-06-23 2001-10-23 The Board Of Trustees Of The University Of Illinois Fast hierarchical backprojection for 3D Radon transform
DE10051462A1 (de) 2000-10-17 2002-04-25 Siemens Ag Verfahren zur Strahlaufhärtungskorrektur für ein mittels eines CT-Geräts aufgenommenes Ausgangsbild
US7139406B2 (en) * 2001-04-03 2006-11-21 L-3 Communications Security And Detection Systems Remote baggage screening system, software and method
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CN100453044C (zh) * 2004-11-16 2009-01-21 北京航空航天大学 基于原始投影正弦图的ct射束硬化校正方法
DE102005031903A1 (de) * 2005-07-07 2007-01-11 Siemens Ag Verfahren zur nichtlinearen Bildbearbeitung und Flachdetektor mit einer Korrektureinheit
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DE102007020065A1 (de) * 2007-04-27 2008-10-30 Siemens Ag Verfahren für die Erstellung von Massenbelegungsbildern anhand von in unterschiedlichen Energiebereichen aufgenommenen Schwächungsbildern
DE102009043213A1 (de) * 2009-09-28 2011-03-31 Siemens Aktiengesellschaft Effiziente Korrektur von Polychromieeffekten bei der Bildrekonstruktion
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KR102067367B1 (ko) 2011-09-07 2020-02-11 라피스캔 시스템스, 인코포레이티드 적하목록 데이터를 이미징/검출 프로세싱에 통합시킨 x-선 검사 방법
EP3764281A1 (en) 2016-02-22 2021-01-13 Rapiscan Systems, Inc. Methods of identifying firearms in radiographic images

Family Cites Families (10)

* 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
SE373279B (sv) * 1973-05-11 1975-02-03 Atomenergi Ab Forfarande och anordning for undersokning av en del av en biologisk vevnad
GB1475492A (en) * 1973-06-01 1977-06-01 Emi Ltd Apparatus for examining objects by means of penetrating radiation
US4069422A (en) * 1973-06-01 1978-01-17 E M I Limited Apparatus for examining objects by means of penetrating radiation
US3927318A (en) * 1974-05-06 1975-12-16 Albert Macovski Cross-sectional fluorescent imaging system
DE2442412A1 (de) * 1974-09-05 1976-03-18 Philips Patentverwaltung Anordnung zur ermittlung der verteilung der absorption oder der emission von strahlung in einer ebene eines koerpers
US3965358A (en) * 1974-12-06 1976-06-22 Albert Macovski Cross-sectional imaging system using a polychromatic x-ray source
GB1578442A (en) * 1976-07-01 1980-11-05 Emi Ltd Radiography
US4029963A (en) * 1976-07-30 1977-06-14 The Board Of Trustees Of Leland Stanford Junior University X-ray spectral decomposition imaging system

Also Published As

Publication number Publication date
GB2020939A (en) 1979-11-21
JPH0260330B2 (sv) 1990-12-17
US4217641A (en) 1980-08-12
NL7903199A (nl) 1979-10-30
GB2020939B (en) 1982-11-24
DE2916486C2 (sv) 1989-04-13
CA1124890A (en) 1982-06-01
JPS54144189A (en) 1979-11-10
FR2424590B1 (fr) 1986-03-28
DE2916486A1 (de) 1979-10-31
FR2424590A1 (fr) 1979-11-23

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