WO2007110795A3 - Effective dual-energy x-ray attenuation measurement - Google Patents

Effective dual-energy x-ray attenuation measurement Download PDF

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Publication number
WO2007110795A3
WO2007110795A3 PCT/IB2007/050879 IB2007050879W WO2007110795A3 WO 2007110795 A3 WO2007110795 A3 WO 2007110795A3 IB 2007050879 W IB2007050879 W IB 2007050879W WO 2007110795 A3 WO2007110795 A3 WO 2007110795A3
Authority
WO
WIPO (PCT)
Prior art keywords
ray
focus
detector elements
focus point
energy
Prior art date
Application number
PCT/IB2007/050879
Other languages
French (fr)
Other versions
WO2007110795A2 (en
Inventor
Thomas Koehler
Jens-Peter Schlomka
Original Assignee
Philips Intellectual Property
Koninkl Philips Electronics Nv
Thomas Koehler
Jens-Peter Schlomka
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 Intellectual Property, Koninkl Philips Electronics Nv, Thomas Koehler, Jens-Peter Schlomka filed Critical Philips Intellectual Property
Priority to US12/293,564 priority Critical patent/US7778383B2/en
Priority to EP07735118A priority patent/EP2002286A2/en
Priority to JP2009502268A priority patent/JP2009531108A/en
Publication of WO2007110795A2 publication Critical patent/WO2007110795A2/en
Publication of WO2007110795A3 publication Critical patent/WO2007110795A3/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
    • G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
    • G01T1/29—Measurement performed on radiation beams, e.g. position or section of the beam; Measurement of spatial distribution of radiation
    • G01T1/2914—Measurement of spatial distribution of radiation
    • G01T1/2985—In depth localisation, e.g. using positron emitters; Tomographic imaging (longitudinal and transverse section imaging; apparatus for radiation diagnosis sequentially in different planes, steroscopic radiation diagnosis)
    • 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]
    • 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
    • A61B6/40—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for generating radiation specially adapted for radiation diagnosis
    • A61B6/4021—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for generating radiation specially adapted for radiation diagnosis involving movement of the focal spot
    • 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
    • A61B6/40—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for generating radiation specially adapted for radiation diagnosis
    • A61B6/4021—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for generating radiation specially adapted for radiation diagnosis involving movement of the focal spot
    • A61B6/4028—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for generating radiation specially adapted for radiation diagnosis involving movement of the focal spot resulting in acquisition of views from substantially different positions, e.g. EBCT
    • 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
    • A61B6/48—Diagnostic techniques
    • A61B6/482—Diagnostic techniques involving multiple energy imaging
    • G01V5/224—
    • G01V5/226—
    • 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
    • A61B6/037—Emission tomography
    • 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

Abstract

It is described a method and a CT system for measuring dual-energy X- ray attenuation data of an object. The CT system comprises a rotatable holder, an X-ray source comprising two different X-ray focus points, and an X-ray detection device comprising a plurality of detector elements exhibiting different spectral sensitivities. The method comprises the steps of (a) adjusting the X-ray source such that it emits X-rays originating a first focus point, (b) acquiring first attenuation data separately with first detector elements and with second detector elements, (c) moving the X-ray focus discretely to a second focus point, and (d) acquiring second attenuation data separately with both types of detector elements. Thereby the two focus points are spatially separated from each such that a first beam path originating from the first focus point penetrates a certain voxel within the object and impinges on a first detector element and a second beam path originating from the second X-ray focus point penetrates the same voxel and impinges on a second detector element.
PCT/IB2007/050879 2006-03-29 2007-03-14 Effective dual-energy x-ray attenuation measurement WO2007110795A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US12/293,564 US7778383B2 (en) 2006-03-29 2007-03-14 Effective dual-energy x-ray attenuation measurement
EP07735118A EP2002286A2 (en) 2006-03-29 2007-03-14 Effective dual-energy x-ray attenuation measurement
JP2009502268A JP2009531108A (en) 2006-03-29 2007-03-14 Efficient dual energy X-ray attenuation measurement

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP06111882 2006-03-29
EP06111882.4 2006-03-29

Publications (2)

Publication Number Publication Date
WO2007110795A2 WO2007110795A2 (en) 2007-10-04
WO2007110795A3 true WO2007110795A3 (en) 2008-01-31

Family

ID=38541514

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2007/050879 WO2007110795A2 (en) 2006-03-29 2007-03-14 Effective dual-energy x-ray attenuation measurement

Country Status (5)

Country Link
US (1) US7778383B2 (en)
EP (1) EP2002286A2 (en)
JP (1) JP2009531108A (en)
CN (1) CN101410727A (en)
WO (1) WO2007110795A2 (en)

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US7869559B2 (en) * 2006-10-19 2011-01-11 General Electric Company X-ray detector methods and apparatus
US7852979B2 (en) * 2007-04-05 2010-12-14 General Electric Company Dual-focus X-ray tube for resolution enhancement and energy sensitive CT
US8321131B2 (en) * 2007-12-14 2012-11-27 Schlumberger Technology Corporation Radial density information from a Betatron density sonde
BRPI0910206A2 (en) * 2008-06-30 2015-09-29 Koninkl Philips Electronics Nv computed tomography imaging system and method
GB0813560D0 (en) * 2008-07-24 2008-09-03 Bil Solutions Ltd Improvements in and relating to characterisation of radioactive waste
JP5460106B2 (en) * 2009-04-03 2014-04-02 キヤノン株式会社 X-ray imaging apparatus, control method therefor, and computer program
FR2947658B1 (en) * 2009-07-03 2011-07-29 Norbert Beyrard X-RAY IMAGING METHOD AND DEVICE WITH THREE-DIMENSIONAL PROCESSING
EP2457237B1 (en) * 2009-07-23 2019-12-11 Sun Nuclear Corp. Multiple axes scanning system for measuring radiation from a radiation source
JP2011245048A (en) * 2010-05-27 2011-12-08 Ge Medical Systems Global Technology Co Llc X-ray ct apparatus
IT1405995B1 (en) * 2010-07-09 2014-02-06 Alta Lab S R L SYSTEM AND METHOD FOR X-RAY INSPECTION AND IDENTIFICATION OF THE CHEMICAL COMPOSITION OF MATERIALS
DE102010042683B4 (en) * 2010-10-20 2013-11-14 Siemens Aktiengesellschaft Device and method for generating X-radiation and computer program and data carrier
US20120236987A1 (en) * 2011-03-18 2012-09-20 David Ruimi Multiple energy ct scanner
CA2913350A1 (en) 2012-05-29 2013-12-05 THE ROYAL INSTITUTION FOR THE ADVANCEMENT OF LEARINING/McGILL UNIVERSITY Method and system for calorimetry probe
DE102012211146A1 (en) * 2012-06-28 2014-01-02 Siemens Aktiengesellschaft Method and X-ray system for generating a phase contrast display
CN103674979B (en) * 2012-09-19 2016-12-21 同方威视技术股份有限公司 A kind of luggage and articles CT safe examination system and detector assembly thereof
WO2014052932A1 (en) * 2012-09-28 2014-04-03 The Regents Of The University Of California Realtime imaging and radiotherapy of microscopic disease
EP2932469B1 (en) 2012-12-11 2018-10-31 Koninklijke Philips N.V. Method of determining the blood flow through coronary arteries
DE102013104193A1 (en) * 2013-04-25 2014-10-30 Smiths Heimann Gmbh CT X-ray inspection system, in particular for the inspection of objects
CN105242322A (en) * 2014-06-25 2016-01-13 清华大学 Detector device, dual-energy CT system and detection method applying dual-energy CT system
US9442005B2 (en) * 2014-07-30 2016-09-13 Corning Optical Communications LLC Non-contact methods of measuring insertion loss in optical fiber connectors
EP3193720B1 (en) * 2014-09-08 2020-01-01 Koninklijke Philips N.V. Systems and methods for grating modulation of spectra and intensity in computed tomography
WO2016100739A1 (en) 2014-12-19 2016-06-23 Sun Nuclear Corporation Radiation therapy dose calculation
US10617891B2 (en) 2015-04-23 2020-04-14 Sun Nuclear Corporation Radiation detector calibration
CN105116462A (en) * 2015-09-08 2015-12-02 同方威视技术股份有限公司 Safety inspection apparatus
US10596394B2 (en) 2016-07-28 2020-03-24 Sun Nuclear Corporation Beam angle direction determination
WO2018160763A1 (en) 2017-02-28 2018-09-07 Sun Nuclear Corporation Radiation therapy treatment verification with electronic portal imaging device transit images
US10610173B2 (en) * 2018-01-16 2020-04-07 General Electric Company System and method to improve spatial resolution in computed tomography
US11278744B2 (en) 2018-09-28 2022-03-22 Sun Nuclear Corporation Systems and methods to account for tilt of a radiation measurement system
DE102019202359A1 (en) * 2019-02-21 2020-08-27 Siemens Healthcare Gmbh Method for determining a relative position of an object with respect to an X-ray recording device
WO2021007459A1 (en) 2019-07-10 2021-01-14 Sun Nuclear Corporation Scintillator-based radiation therapy quality assurance
US11600004B2 (en) 2019-07-10 2023-03-07 Sun Nuclear Corporation Image-based radiation therapy quality assurance
CN114113158A (en) * 2021-11-08 2022-03-01 上海物影科技有限公司 Target object recognition device and system
CN114295652A (en) * 2021-12-24 2022-04-08 武汉联影生命科学仪器有限公司 Dual-energy filter and dual-energy CT

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Patent Citations (3)

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EP0365084A1 (en) * 1988-10-18 1990-04-25 Koninklijke Philips Electronics N.V. Computer tomography scanner with a tomosynthetic scanogram

Also Published As

Publication number Publication date
CN101410727A (en) 2009-04-15
EP2002286A2 (en) 2008-12-17
US20100166139A1 (en) 2010-07-01
JP2009531108A (en) 2009-09-03
US7778383B2 (en) 2010-08-17
WO2007110795A2 (en) 2007-10-04

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