EP0059238A1 - Tube à rayons X - Google Patents

Tube à rayons X Download PDF

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Publication number
EP0059238A1
EP0059238A1 EP81108428A EP81108428A EP0059238A1 EP 0059238 A1 EP0059238 A1 EP 0059238A1 EP 81108428 A EP81108428 A EP 81108428A EP 81108428 A EP81108428 A EP 81108428A EP 0059238 A1 EP0059238 A1 EP 0059238A1
Authority
EP
European Patent Office
Prior art keywords
anode
tube
shield
ray
tube according
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.)
Granted
Application number
EP81108428A
Other languages
German (de)
English (en)
Other versions
EP0059238B1 (fr
Inventor
Rudolf Dipl.-Phys. Friedel
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.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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 Siemens AG, Siemens Corp filed Critical Siemens AG
Priority to AT81108428T priority Critical patent/ATE17802T1/de
Publication of EP0059238A1 publication Critical patent/EP0059238A1/fr
Application granted granted Critical
Publication of EP0059238B1 publication Critical patent/EP0059238B1/fr
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J35/00—X-ray tubes
    • H01J35/02—Details
    • H01J35/16—Vessels; Containers; Shields associated therewith
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2235/00—X-ray tubes
    • H01J2235/16—Vessels
    • H01J2235/165—Shielding arrangements
    • H01J2235/168—Shielding arrangements against charged particles

Definitions

  • the invention relates to an x-ray tube according to the preamble of claim 1.
  • x-ray tubes are known, for example, from the publication "On the history of medical x-ray tubes” by F. Prellwitz from Siemens Aktiengesellschaft, Medical Technology Area, Erlangen, order number MR 71/1524, printed in the Federal Republic of Germany SD 06792.5.
  • the tube housing and the shield were at the same potential, so that a breakdown through the glass tube bulb was largely prevented.
  • the shield caught electrons, which led to a deterioration of the achievable X-ray beam.
  • a difficult and expensive glass technology was necessary on the one hand, and on the other hand with today's high tube outputs and tube energies the inevitably largely thermally insulated shielding is inadmissibly heated with this construction.
  • the object of the invention is to enable an x-ray tube according to the preamble of claim 1 in addition to an improvement in the dielectric strength and a manufacturing-friendly structure focal near blanking and to achieve increased anode resilience. This object is achieved by the measures specified in the characterizing part of claim 1.
  • the solution to the above problem is that a larger part of the backscattered electrons than known tubes is withdrawn from the focal spot, thereby the anode load increases.
  • the proportion of extravocal radiation in the useful beam is reduced.
  • a very close-to-focus blanking of the radiation cone is possible because the potential difference between the screen and the anode is smaller and therefore the distance between the focus and the aperture can be smaller than in previously used arrangements.
  • the shielding according to the invention can advantageously be held on a metal ring which is concentric with the discharge space.
  • the metal ring can carry an insulating part at one end to which the cathode is attached and an insulating part at its other end which carries the anode.
  • the insulating parts can be made of glass, so that the usual glass blowing technique can be used.
  • the shield usually takes the form of a cylinder, which encloses both the cathode and the anode.
  • the resulting largely metallic discharge space prevents the glass wall of the tube bulb from being hit by electrons and metal vapor deposits.
  • long insulation distances are guaranteed, which guarantee high resistance to high voltages.
  • a rotating anode X-ray tube 1 shown in section 2 denotes a metal ring made of Vacon, which has the shape of an approximately 15 mm long piece of pipe, the wall of which is 1 mm thick and which is connected at one end to a glass part 3, on the inside of which a cathode arrangement 4 is attached.
  • the metal ring carries a glass part 5, which has at its end an anode assembly 6, which consists of an anode plate 7, which carries a rotor 9 via an axis 8, which connects to the connection piece fixed to the glass part 5 10.
  • a shield 11 is attached, which is fixed in the tube 1 via holding connections 12.
  • a copper (Cu) sheet which is 1.5 mm thick is used as shielding.
  • Other sheets, such as those made of nickel or stainless steel are suitable if they are stable under the conditions in the tube.
  • a heating current is applied between lines 20 and 21 in a manner known per se, which causes the cathode 22 to glow.
  • the tube voltage is applied to the tube via one of the lines 20 or 21 and the connector 10, so that an electron current 23 strikes a focal spot path 24 of the anode plate 7.
  • an X-ray cone 25 is generated, which emerges through a window 26 in the shield 11 and a window 27 in the tube bulb.
  • the two windows 26 and 27 advantageously consist of beryllium and represent 0.5 mm thick foils which are inserted into corresponding openings in the shield 11 or the wall 5 of the glass bulb part.

Landscapes

  • X-Ray Techniques (AREA)
  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
  • Radiation-Therapy Devices (AREA)
  • Tires In General (AREA)
EP81108428A 1981-03-02 1981-10-16 Tube à rayons X Expired EP0059238B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81108428T ATE17802T1 (de) 1981-03-02 1981-10-16 Roentgenroehre.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3107949 1981-03-02
DE19813107949 DE3107949A1 (de) 1981-03-02 1981-03-02 Roentgenroehre

Publications (2)

Publication Number Publication Date
EP0059238A1 true EP0059238A1 (fr) 1982-09-08
EP0059238B1 EP0059238B1 (fr) 1986-01-29

Family

ID=6126181

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81108428A Expired EP0059238B1 (fr) 1981-03-02 1981-10-16 Tube à rayons X

Country Status (4)

Country Link
US (1) US4468802A (fr)
EP (1) EP0059238B1 (fr)
AT (1) ATE17802T1 (fr)
DE (2) DE3107949A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0563367A4 (fr) * 1991-10-18 1994-03-16 Varian Associates, Inc.
WO2003065402A1 (fr) * 2002-01-30 2003-08-07 Koninklijke Philips Electronics Nv Enveloppe de tube a rayons x avec dispositif anti-effluves solidaire

Families Citing this family (53)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4964148A (en) * 1987-11-30 1990-10-16 Meicor, Inc. Air cooled metal ceramic x-ray tube construction
US5056126A (en) * 1987-11-30 1991-10-08 Medical Electronic Imaging Corporation Air cooled metal ceramic x-ray tube construction
US5384820A (en) * 1992-01-06 1995-01-24 Picker International, Inc. Journal bearing and radiation shield for rotating housing and anode/stationary cathode X-ray tubes
DE4429910B4 (de) * 1994-01-11 2006-06-29 Siemens Ag Röntgenröhre mit Abschirmteil
GB9519715D0 (en) * 1995-09-27 1995-11-29 Kevex X Ray Inc X-ray tube
DE19542438C1 (de) * 1995-11-14 1996-11-28 Siemens Ag Röntgenröhre
DE19627025C2 (de) * 1996-07-04 1998-05-20 Siemens Ag Röntgenröhre
US6619842B1 (en) * 1997-08-29 2003-09-16 Varian Medical Systems, Inc. X-ray tube and method of manufacture
US6005918A (en) * 1997-12-19 1999-12-21 Picker International, Inc. X-ray tube window heat shield
DE19842467A1 (de) * 1998-09-16 2000-03-23 Siemens Ag Miniaturisierte Röntgenröhre
US7079624B1 (en) 2000-01-26 2006-07-18 Varian Medical Systems, Inc. X-Ray tube and method of manufacture
US6749337B1 (en) 2000-01-26 2004-06-15 Varian Medical Systems, Inc. X-ray tube and method of manufacture
WO2002035574A1 (fr) * 2000-10-23 2002-05-02 Varian Medical Systems, Inc. Tube a rayons x et son procede de fabrication
US7209546B1 (en) 2002-04-15 2007-04-24 Varian Medical Systems Technologies, Inc. Apparatus and method for applying an absorptive coating to an x-ray tube
US7963695B2 (en) 2002-07-23 2011-06-21 Rapiscan Systems, Inc. Rotatable boom cargo scanning system
US8275091B2 (en) 2002-07-23 2012-09-25 Rapiscan Systems, Inc. Compact mobile cargo scanning system
GB0525593D0 (en) 2005-12-16 2006-01-25 Cxr Ltd X-ray tomography inspection systems
GB0309383D0 (en) 2003-04-25 2003-06-04 Cxr Ltd X-ray tube electron sources
US10483077B2 (en) 2003-04-25 2019-11-19 Rapiscan Systems, Inc. X-ray sources having reduced electron scattering
US9113839B2 (en) 2003-04-25 2015-08-25 Rapiscon Systems, Inc. X-ray inspection system and method
GB0309379D0 (en) 2003-04-25 2003-06-04 Cxr Ltd X-ray scanning
GB0812864D0 (en) 2008-07-15 2008-08-20 Cxr Ltd Coolign anode
GB0309374D0 (en) * 2003-04-25 2003-06-04 Cxr Ltd X-ray sources
US8837669B2 (en) 2003-04-25 2014-09-16 Rapiscan Systems, Inc. X-ray scanning system
US7949101B2 (en) 2005-12-16 2011-05-24 Rapiscan Systems, Inc. X-ray scanners and X-ray sources therefor
US8451974B2 (en) 2003-04-25 2013-05-28 Rapiscan Systems, Inc. X-ray tomographic inspection system for the identification of specific target items
US8223919B2 (en) 2003-04-25 2012-07-17 Rapiscan Systems, Inc. X-ray tomographic inspection systems for the identification of specific target items
GB0309387D0 (en) * 2003-04-25 2003-06-04 Cxr Ltd X-Ray scanning
US8094784B2 (en) * 2003-04-25 2012-01-10 Rapiscan Systems, Inc. X-ray sources
GB0309371D0 (en) * 2003-04-25 2003-06-04 Cxr Ltd X-Ray tubes
US9208988B2 (en) 2005-10-25 2015-12-08 Rapiscan Systems, Inc. Graphite backscattered electron shield for use in an X-ray tube
US8243876B2 (en) 2003-04-25 2012-08-14 Rapiscan Systems, Inc. X-ray scanners
CN100555549C (zh) * 2003-05-30 2009-10-28 皇家飞利浦电子股份有限公司 X射线管中增强的电子反向散射
US6928141B2 (en) 2003-06-20 2005-08-09 Rapiscan, Inc. Relocatable X-ray imaging system and method for inspecting commercial vehicles and cargo containers
US7471764B2 (en) 2005-04-15 2008-12-30 Rapiscan Security Products, Inc. X-ray imaging system having improved weather resistance
US9046465B2 (en) 2011-02-24 2015-06-02 Rapiscan Systems, Inc. Optimization of the source firing pattern for X-ray scanning systems
GB0803644D0 (en) 2008-02-28 2008-04-02 Rapiscan Security Products Inc Scanning systems
GB0803641D0 (en) 2008-02-28 2008-04-02 Rapiscan Security Products Inc Scanning systems
US20090284124A1 (en) * 2008-04-22 2009-11-19 Wolfgang Kutschera Cathode composed of materials with different electron works functions
DE102008020163A1 (de) 2008-04-22 2009-10-29 Siemens Aktiengesellschaft Kathode
GB0809110D0 (en) 2008-05-20 2008-06-25 Rapiscan Security Products Inc Gantry scanner systems
DE102008038569A1 (de) * 2008-08-20 2010-02-25 Siemens Aktiengesellschaft Röntgenröhre
GB0816823D0 (en) 2008-09-13 2008-10-22 Cxr Ltd X-ray tubes
GB0901338D0 (en) 2009-01-28 2009-03-11 Cxr Ltd X-Ray tube electron sources
US9218933B2 (en) 2011-06-09 2015-12-22 Rapidscan Systems, Inc. Low-dose radiographic imaging system
MX350070B (es) 2013-01-31 2017-08-25 Rapiscan Systems Inc Sistema de inspeccion de seguridad portatil.
JP1528934S (fr) * 2014-09-25 2015-07-13
JP1528933S (fr) * 2014-09-25 2015-07-13
JP1528468S (fr) * 2014-09-25 2015-07-13
JP1528467S (fr) * 2014-09-25 2015-07-13
JP1529492S (fr) * 2014-09-25 2015-07-21
JP1528466S (fr) * 2014-09-25 2015-07-13
US11551903B2 (en) 2020-06-25 2023-01-10 American Science And Engineering, Inc. Devices and methods for dissipating heat from an anode of an x-ray tube assembly

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT134371B (de) * 1930-10-14 1933-07-25 Philips Nv Röntgenröhre.
DE612213C (de) * 1931-07-26 1935-04-16 Mueller C H F Ag Entladungsgefaess, insbesondere Roentgenroehre, mit reiner Elektronenentladung
CH614313A5 (fr) * 1974-05-03 1979-11-15 Gen Electric

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2952790A (en) * 1957-07-15 1960-09-13 Raytheon Co X-ray tubes
US4309637A (en) * 1979-11-13 1982-01-05 Emi Limited Rotating anode X-ray tube

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT134371B (de) * 1930-10-14 1933-07-25 Philips Nv Röntgenröhre.
DE612213C (de) * 1931-07-26 1935-04-16 Mueller C H F Ag Entladungsgefaess, insbesondere Roentgenroehre, mit reiner Elektronenentladung
CH614313A5 (fr) * 1974-05-03 1979-11-15 Gen Electric

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
F. PRELLWITZ " Zur Geschichte der medizinischen Röntgenröhren " , April 1981, Archiv der Siemens AG, Bereich Medizinische Technik, Erlangen, Bestellnummer MR 71/1524 * Seiten 13-16, Kap. 2.4.3; Seite 21, Kap. 4.51. * *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0563367A4 (fr) * 1991-10-18 1994-03-16 Varian Associates, Inc.
WO2003065402A1 (fr) * 2002-01-30 2003-08-07 Koninklijke Philips Electronics Nv Enveloppe de tube a rayons x avec dispositif anti-effluves solidaire

Also Published As

Publication number Publication date
EP0059238B1 (fr) 1986-01-29
DE3107949A1 (de) 1982-09-16
US4468802A (en) 1984-08-28
DE3173649D1 (en) 1986-03-13
ATE17802T1 (de) 1986-02-15

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