FR2947691B1 - Procede pour le controle de l'emission d'un faisceau d'electrons dans une cathode, cathode, tube et systeme d'imagerie correspondants - Google Patents

Procede pour le controle de l'emission d'un faisceau d'electrons dans une cathode, cathode, tube et systeme d'imagerie correspondants

Info

Publication number
FR2947691B1
FR2947691B1 FR0954636A FR0954636A FR2947691B1 FR 2947691 B1 FR2947691 B1 FR 2947691B1 FR 0954636 A FR0954636 A FR 0954636A FR 0954636 A FR0954636 A FR 0954636A FR 2947691 B1 FR2947691 B1 FR 2947691B1
Authority
FR
France
Prior art keywords
cathode
emission
tube
controlling
electron beam
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.)
Active
Application number
FR0954636A
Other languages
English (en)
Other versions
FR2947691A1 (fr
Inventor
Gwenael Lemarchand
Frederic Dahan
Christelle Gaudin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Priority to FR0954636A priority Critical patent/FR2947691B1/fr
Priority to US12/829,850 priority patent/US8498378B2/en
Publication of FR2947691A1 publication Critical patent/FR2947691A1/fr
Application granted granted Critical
Publication of FR2947691B1 publication Critical patent/FR2947691B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • H05G1/56—Switching-on; Switching-off
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J35/00—X-ray tubes
    • H01J35/02—Details
    • H01J35/04—Electrodes ; Mutual position thereof; Constructional adaptations therefor
    • H01J35/06—Cathodes
    • H01J35/066—Details of electron optical components, e.g. cathode cups
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J35/00—X-ray tubes
    • H01J35/02—Details
    • H01J35/14—Arrangements for concentrating, focusing, or directing the cathode ray
    • H01J35/147—Spot size control
    • 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
    • H05G1/58—Switching arrangements for changing-over from one mode of operation to another, e.g. from radioscopy to radiography, from radioscopy to irradiation or from one tube voltage to another
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2235/00—X-ray tubes
    • H01J2235/06—Cathode assembly
    • H01J2235/068—Multi-cathode assembly
FR0954636A 2009-07-06 2009-07-06 Procede pour le controle de l'emission d'un faisceau d'electrons dans une cathode, cathode, tube et systeme d'imagerie correspondants Active FR2947691B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR0954636A FR2947691B1 (fr) 2009-07-06 2009-07-06 Procede pour le controle de l'emission d'un faisceau d'electrons dans une cathode, cathode, tube et systeme d'imagerie correspondants
US12/829,850 US8498378B2 (en) 2009-07-06 2010-07-02 Method to control the emission of a beam of electrons in a cathode, corresponding cathode, tube and imaging system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0954636A FR2947691B1 (fr) 2009-07-06 2009-07-06 Procede pour le controle de l'emission d'un faisceau d'electrons dans une cathode, cathode, tube et systeme d'imagerie correspondants

Publications (2)

Publication Number Publication Date
FR2947691A1 FR2947691A1 (fr) 2011-01-07
FR2947691B1 true FR2947691B1 (fr) 2016-12-16

Family

ID=41403954

Family Applications (1)

Application Number Title Priority Date Filing Date
FR0954636A Active FR2947691B1 (fr) 2009-07-06 2009-07-06 Procede pour le controle de l'emission d'un faisceau d'electrons dans une cathode, cathode, tube et systeme d'imagerie correspondants

Country Status (2)

Country Link
US (1) US8498378B2 (fr)
FR (1) FR2947691B1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180211809A1 (en) * 2017-01-26 2018-07-26 Varex Imaging Corporation Cathode head with multiple filaments for high emission focal spot
WO2019117757A1 (fr) * 2017-12-15 2019-06-20 Общество с ограниченной ответственностью "Научно-технический центр "МТ" (ООО "НТЦ-МТ") Tube à rayons x multiples à anode tournante
RU178295U1 (ru) * 2017-12-15 2018-03-29 Акционерное общество "МЕДИЦИНСКИЕ ТЕХНОЛОГИИ Лтд" (АО "МТЛ") Многолучевая рентгеновская трубка с вращающимся анодом
US11636996B2 (en) 2020-09-09 2023-04-25 Kla Corporation Magnetic immersion electron gun

Family Cites Families (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4689809A (en) * 1982-11-23 1987-08-25 Elscint, Inc. X-ray tube having an adjustable focal spot
US4685118A (en) * 1983-11-10 1987-08-04 Picker International, Inc. X-ray tube electron beam switching and biasing method and apparatus
US4764947A (en) * 1985-12-04 1988-08-16 The Machlett Laboratories, Incorporated Cathode focusing arrangement
US4823371A (en) * 1987-08-24 1989-04-18 Grady John K X-ray tube system
FR2658002B1 (fr) * 1990-02-02 1992-05-22 Gen Electric Cgr Cathode a deflexion en diedre pour tube a rayons x.
FR2680046B1 (fr) * 1991-07-31 1993-11-05 General Electric Cgr Sa Tube a rayons x a deflexion electromagnetique.
US5303281A (en) * 1992-07-09 1994-04-12 Varian Associates, Inc. Mammography method and improved mammography X-ray tube
US5511105A (en) * 1993-07-12 1996-04-23 Siemens Aktiengesellschaft X-ray tube with multiple differently sized focal spots and method for operating same
DE4430622C2 (de) * 1994-08-29 1998-07-02 Siemens Ag Kathodensystem für eine Röntgenröhre
DE19510048C2 (de) * 1995-03-20 1998-05-14 Siemens Ag Röntgenröhre
US5535254A (en) * 1995-05-17 1996-07-09 Carlson; Todd R. X-ray tube with self-biasing deck
US5623530A (en) * 1996-09-17 1997-04-22 General Electric Company Cathode cup assembly for an x-ray tube
EP0986090A4 (fr) * 1998-03-16 2002-01-16 Toshiba Kk Tube a rayons x
US6438207B1 (en) * 1999-09-14 2002-08-20 Varian Medical Systems, Inc. X-ray tube having improved focal spot control
US6480572B2 (en) * 2001-03-09 2002-11-12 Koninklijke Philips Electronics N.V. Dual filament, electrostatically controlled focal spot for x-ray tubes
EP1429587A4 (fr) * 2001-08-29 2008-12-10 Toshiba Kk Dispositif de production de rayons x
US20030095632A1 (en) * 2001-11-20 2003-05-22 Philips Medical Systems (Cleveland), Inc. X-ray tube cathode cup structure for focal spot deflection
JP2004265606A (ja) * 2003-01-21 2004-09-24 Toshiba Corp Ｘ線管装置
US6968039B2 (en) * 2003-08-04 2005-11-22 Ge Medical Systems Global Technology Co., Llc Focal spot position adjustment system for an imaging tube
US6980623B2 (en) * 2003-10-29 2005-12-27 Ge Medical Systems Global Technology Company Llc Method and apparatus for z-axis tracking and collimation
US7327829B2 (en) * 2004-04-20 2008-02-05 Varian Medical Systems Technologies, Inc. Cathode assembly
US7657002B2 (en) * 2006-01-31 2010-02-02 Varian Medical Systems, Inc. Cathode head having filament protection features
WO2007142999A2 (fr) * 2006-05-31 2007-12-13 L-3 Communications Security And Detection Systems, Inc. Source de rayons x à deux niveaux d'énergie
US7869561B2 (en) * 2007-04-10 2011-01-11 Arineta Ltd. Cone-beam CT
US7496180B1 (en) * 2007-08-29 2009-02-24 General Electric Company Focal spot temperature reduction using three-point deflection
US7792241B2 (en) * 2008-10-24 2010-09-07 General Electric Company System and method of fast KVP switching for dual energy CT

Also Published As

Publication number Publication date
FR2947691A1 (fr) 2011-01-07
US20110002447A1 (en) 2011-01-06
US8498378B2 (en) 2013-07-30

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