WO2006064403A3 - Pulsed x-ray for continuous detector correction - Google Patents

Pulsed x-ray for continuous detector correction Download PDF

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Publication number
WO2006064403A3
WO2006064403A3 PCT/IB2005/054069 IB2005054069W WO2006064403A3 WO 2006064403 A3 WO2006064403 A3 WO 2006064403A3 IB 2005054069 W IB2005054069 W IB 2005054069W WO 2006064403 A3 WO2006064403 A3 WO 2006064403A3
Authority
WO
WIPO (PCT)
Prior art keywords
gain
detector
measured
pulsed
ray
Prior art date
Application number
PCT/IB2005/054069
Other languages
French (fr)
Other versions
WO2006064403A2 (en
Inventor
Randall P Luhta
Marc A Chappo
Brian E Harwood
Rodney A Mattson
Chris J Vrettos
Original Assignee
Koninkl Philips Electronics Nv
Randall P Luhta
Marc A Chappo
Brian E Harwood
Rodney A Mattson
Chris J Vrettos
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 Koninkl Philips Electronics Nv, Randall P Luhta, Marc A Chappo, Brian E Harwood, Rodney A Mattson, Chris J Vrettos filed Critical Koninkl Philips Electronics Nv
Priority to EP05824789A priority Critical patent/EP1828810B1/en
Priority to US11/721,163 priority patent/US7873144B2/en
Priority to CN2005800433581A priority patent/CN101080653B/en
Priority to JP2007546238A priority patent/JP2008523872A/en
Publication of WO2006064403A2 publication Critical patent/WO2006064403A2/en
Publication of WO2006064403A3 publication Critical patent/WO2006064403A3/en

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]
    • 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
    • A61B6/58—Testing, adjusting or calibrating apparatus or devices for radiation diagnosis
    • A61B6/582—Calibration
    • A61B6/585—Calibration of detector units
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
    • G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
    • G01T1/16—Measuring radiation intensity
    • G01T1/24—Measuring radiation intensity with semiconductor detectors

Abstract

A radiographic imaging apparatus (10) comprises a primary radiation source (14) which projects a beam of radiation into an examination region (16). A detector (18) converts detected radiation passing through the examination region (16) into electrical detector signals representative of the detected radiation. The detector (18) has at least one temporally changing characteristic such as an offset B(t) or gain A(t). A grid pulse means (64) turns the primary radiation source (14) ON and OFF at a rate between 1000 and 5000 pulses per second, such that at least the offset B(t) is re-measured between 1000 and 5000 times per second and corrected a plurality of times during generation of the detector signals. The gain A(t) is measured by pulsing a second pulsed source (86, 100, 138) of a constant intensity (XRef) with a second pulse means (88). The gain A(t) is re-measured and corrected a plurality of times per second during generation of the detector signals.
PCT/IB2005/054069 2004-12-17 2005-12-05 Pulsed x-ray for continuous detector correction WO2006064403A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP05824789A EP1828810B1 (en) 2004-12-17 2005-12-05 Pulsed x-ray for continuous detector correction
US11/721,163 US7873144B2 (en) 2004-12-17 2005-12-05 Pulsed x-ray for continuous detector correction
CN2005800433581A CN101080653B (en) 2004-12-17 2005-12-05 X ray photographic equipment, method and computerized tomography
JP2007546238A JP2008523872A (en) 2004-12-17 2005-12-05 Pulsed X-ray for continuous detector correction

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US63747604P 2004-12-17 2004-12-17
US60/637,476 2004-12-17

Publications (2)

Publication Number Publication Date
WO2006064403A2 WO2006064403A2 (en) 2006-06-22
WO2006064403A3 true WO2006064403A3 (en) 2006-11-23

Family

ID=36579171

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2005/054069 WO2006064403A2 (en) 2004-12-17 2005-12-05 Pulsed x-ray for continuous detector correction

Country Status (5)

Country Link
US (1) US7873144B2 (en)
EP (1) EP1828810B1 (en)
JP (1) JP2008523872A (en)
CN (1) CN101080653B (en)
WO (1) WO2006064403A2 (en)

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WO2013061186A1 (en) * 2011-10-26 2013-05-02 Koninklijke Philips Electronics N.V. Radiographic apparatus for detecting photons with offset correction
US9195899B2 (en) * 2012-01-13 2015-11-24 Carestream Health, Inc. Self correcting portable digital radiography detector, methods and systems for same
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JP6049314B2 (en) * 2012-06-11 2016-12-21 キヤノン株式会社 Radiation imaging apparatus and image processing method
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JP2014061273A (en) * 2012-08-30 2014-04-10 Toshiba Corp X-ray computed tomographic device
JP6316303B2 (en) * 2012-10-12 2018-04-25 コーニンクレッカ フィリップス エヌ ヴェＫｏｎｉｎｋｌｉｊｋｅ Ｐｈｉｌｉｐｓ Ｎ．Ｖ． Radiation imaging apparatus and radiation imaging method
US9746566B2 (en) 2012-12-04 2017-08-29 Koninklijke Philips N.V. Method and apparatus for image correction of X-ray image information
US9224572B2 (en) 2012-12-18 2015-12-29 General Electric Company X-ray tube with adjustable electron beam
US9484179B2 (en) 2012-12-18 2016-11-01 General Electric Company X-ray tube with adjustable intensity profile
JP6058405B2 (en) * 2013-01-21 2017-01-11 東芝メディカルシステムズ株式会社 X-ray CT apparatus and radiation detector calibration apparatus
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CN104317214A (en) * 2014-09-26 2015-01-28 中国科学院长春光学精密机械与物理研究所 Ultraviolet photon counting detector with position readout circuit
EP3244800A1 (en) 2015-01-12 2017-11-22 Real Time Imaging Technologies, LLC Low-dose x-ray imaging system
GB201505732D0 (en) 2015-04-02 2015-05-20 Kromek Ltd Detector and method of operation
DE102016210935B4 (en) * 2016-06-20 2020-07-09 Siemens Healthcare Gmbh X-ray detector with a non-transparent intermediate layer
WO2018030928A1 (en) * 2016-08-11 2018-02-15 Prismatic Sensors Ab Data acquisition for computed tomography
CN109716164B (en) * 2016-10-18 2023-05-30 深圳帧观德芯科技有限公司 Radiation detector with scintillator for pulsed radiation source
EP3529635A4 (en) * 2016-10-18 2020-05-27 Shenzhen Xpectvision Technology Co., Ltd. Aradiation detector suitable for a pulsed radiation source
CN107015267B (en) * 2017-06-09 2018-10-09 河北格物仪器设备有限公司 Detector gain corrects system and method
CN107260197B (en) * 2017-07-10 2020-11-10 东软医疗系统股份有限公司 Time correction method, device and equipment
CN110108735B (en) * 2018-01-27 2023-08-01 天津大学 Coherent scattering type X-ray detector with grating structure and detection method
WO2020093140A1 (en) * 2018-11-05 2020-05-14 Socpra Sciences Et Génie S.E.C. Pulsed x-ray imaging

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Also Published As

Publication number Publication date
CN101080653A (en) 2007-11-28
WO2006064403A2 (en) 2006-06-22
JP2008523872A (en) 2008-07-10
EP1828810B1 (en) 2012-06-06
US20090238330A1 (en) 2009-09-24
CN101080653B (en) 2012-02-29
US7873144B2 (en) 2011-01-18
EP1828810A2 (en) 2007-09-05

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