GB1444109A - Apparatus and method for generating x-rays - Google Patents

Apparatus and method for generating x-rays

Info

Publication number
GB1444109A
GB1444109A GB5983273A GB5983273A GB1444109A GB 1444109 A GB1444109 A GB 1444109A GB 5983273 A GB5983273 A GB 5983273A GB 5983273 A GB5983273 A GB 5983273A GB 1444109 A GB1444109 A GB 1444109A
Authority
GB
United Kingdom
Prior art keywords
scanning
target
scanning velocity
signal
control signal
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.)
Expired
Application number
GB5983273A
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.)
Jeol Ltd
Original Assignee
Jeol Ltd
Nihon Denshi KK
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 Jeol Ltd, Nihon Denshi KK filed Critical Jeol Ltd
Publication of GB1444109A publication Critical patent/GB1444109A/en
Expired legal-status Critical Current

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
    • H05G1/26—Measuring, controlling or protecting
    • H05G1/30—Controlling
    • H05G1/52—Target size or shape; Direction of electron beam, e.g. in tubes with one anode and more than one cathode
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/02—Arrangements for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/40—Arrangements for generating radiation specially adapted for radiation diagnosis
    • A61B6/4021—Arrangements for generating radiation specially adapted for radiation diagnosis involving movement of the focal spot
    • 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
    • H05G1/66—Circuit arrangements for X-ray tubes with target movable relatively to the anode

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Medical Informatics (AREA)
  • Engineering & Computer Science (AREA)
  • General Health & Medical Sciences (AREA)
  • Radiology & Medical Imaging (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Optics & Photonics (AREA)
  • Pathology (AREA)
  • Physics & Mathematics (AREA)
  • Biomedical Technology (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • Biophysics (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Toxicology (AREA)
  • X-Ray Techniques (AREA)

Abstract

1444109 Automatic control of x-ray generators NIHON DENSHI KK 27 Dec 1973 [27 Dec 1972] 59832/73 Heading G3N An electron beam is scanned over a target to produce x-rays. A beam control signal is derived corresponding to the sensed scanning velocity and is used to prevent damage to the target by excessive irradiation. In the embodiment of Fig. 1, electrons pass from a filament source 2 to a target 7 by way of a Wehnelt cylinder 3, anode 4, focusing lenses 5, 6 and scanning deflection coils 10,11. X-rays from the target pass through a pinhole 14 and object 15 to a detector 16 with an associated display tube 18. The amplitude and frequency of the scanning signal fed to coils 10, 11 by an amplifier 12 are measured by detectors 19, 20, output signals from which are multiplied together in a circuit 21 to produce a scanning velocity signal forming a control signal.. The bias voltage supplied to the filament 2 and cylinder 3 by a source 22 is adjusted by the control signal so that the electron beam current is reduced if the scanning velocity decreases. The control signal may also be used to vary the spot diameter by adjusting the current supplied to the lens 6, and to control the filament temperature. The output from multiplier 21 may be compared with a reference signal to produce a pulse which cuts off the electron beam if the scanning velocity falls below a predetermined value, Fig. 2, (not shown). The scanning velocity may alternatively be determined by differentiating the output signal from amplifier 12, Fig. 6 (not shown). In other embodiments, Figs. 3-5 (not shown), an auxiliary lens for enlarging the spot, or a deflector for rapidly scanning the beam or diverting the beam away from the target may be energized if the scanning velocity falls below the predetermined value.
GB5983273A 1972-12-27 1973-12-27 Apparatus and method for generating x-rays Expired GB1444109A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP732159A JPS5318318B2 (en) 1972-12-27 1972-12-27

Publications (1)

Publication Number Publication Date
GB1444109A true GB1444109A (en) 1976-07-28

Family

ID=11521563

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5983273A Expired GB1444109A (en) 1972-12-27 1973-12-27 Apparatus and method for generating x-rays

Country Status (5)

Country Link
US (1) US3852605A (en)
JP (1) JPS5318318B2 (en)
DE (1) DE2364142C3 (en)
FR (1) FR2212739B1 (en)
GB (1) GB1444109A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0000079A1 (en) * 1977-06-03 1978-12-20 Richard David Albert Scanning radiographic apparatus and method.
WO1997042646A1 (en) * 1996-05-07 1997-11-13 American Science And Engineering, Inc. X-ray tubes for imaging systems
WO1998013853A1 (en) * 1996-09-27 1998-04-02 Bede Scientific Instruments Limited X-ray generator
US5896486A (en) * 1997-05-01 1999-04-20 Lucent Technologies Inc. Mass splice tray for optical fibers
WO2000025341A1 (en) * 1998-10-26 2000-05-04 Industrial Control Machines S.A. X-ray control device
WO2000025342A1 (en) * 1998-10-27 2000-05-04 Litton Systems, Inc. X-ray tube providing variable imaging spot size
US9748070B1 (en) 2014-09-17 2017-08-29 Bruker Jv Israel Ltd. X-ray tube anode
GB2565138A (en) * 2017-08-04 2019-02-06 Adaptix Ltd X-ray generator
US11302508B2 (en) 2018-11-08 2022-04-12 Bruker Technologies Ltd. X-ray tube

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4066902A (en) * 1974-03-23 1978-01-03 Emi Limited Radiography with detector compensating means
GB1529799A (en) * 1974-11-13 1978-10-25 Emi Ltd Radiography
US4149076A (en) * 1976-04-05 1979-04-10 Albert Richard D Method and apparatus producing plural images of different contrast range by X-ray scanning
GB1581526A (en) * 1976-08-12 1980-12-17 Emi Ltd X-ray tube arrangements
US4130759A (en) * 1977-03-17 1978-12-19 Haimson Research Corporation Method and apparatus incorporating no moving parts, for producing and selectively directing x-rays to different points on an object
US4323779A (en) * 1977-06-03 1982-04-06 Albert Richard David Scanning radiographic method
DE2730889C2 (en) * 1977-07-08 1985-07-11 Gesellschaft für Strahlen- und Umweltforschung mbH, 8000 München Device for spatially resolving material analysis of a sample
JPS6322829Y2 (en) * 1979-10-05 1988-06-22
US4352021A (en) * 1980-01-07 1982-09-28 The Regents Of The University Of California X-Ray transmission scanning system and method and electron beam X-ray scan tube for use therewith
DE3222515C2 (en) * 1982-06-16 1986-05-28 Feinfocus Röntgensysteme GmbH, 3050 Wunstorf Fine focus X-ray tube and procedure for its operation
DE3222514A1 (en) * 1982-06-16 1984-03-22 Feinfocus Röntgensysteme GmbH, 3050 Wunstorf Method and device for producing X-ray radiation for stereo recordings, tomographs and tomo-syntheses
DE3426623A1 (en) * 1984-07-19 1986-01-30 Scanray A/S, Kopenhagen X-RAY TUBES
DE3431434A1 (en) * 1984-08-27 1986-03-06 Scanray A/S, Kopenhagen X-RAY TUBES
US4631742A (en) * 1985-02-25 1986-12-23 General Electric Company Electronic control of rotating anode microfocus x-ray tubes for anode life extension
EP0550983B1 (en) * 1992-01-06 1996-08-28 Picker International, Inc. X-ray tube with ferrite core filament transformer
US5241577A (en) * 1992-01-06 1993-08-31 Picker International, Inc. X-ray tube with bearing slip ring
US5200985A (en) * 1992-01-06 1993-04-06 Picker International, Inc. X-ray tube with capacitively coupled filament drive
US5274690A (en) * 1992-01-06 1993-12-28 Picker International, Inc. Rotating housing and anode/stationary cathode x-ray tube with magnetic susceptor for holding the cathode stationary
JPH0748091Y2 (en) * 1992-06-04 1995-11-08 株式会社セイバン Bag lid stopper
DE10224292A1 (en) * 2002-05-31 2003-12-11 Philips Intellectual Property X-ray tube
DE102005041923A1 (en) * 2005-09-03 2007-03-08 Comet Gmbh Device for generating X-ray or XUV radiation
EP1959835B1 (en) * 2005-12-08 2018-11-14 Koninklijke Philips N.V. Systems and methods for scanning and data acquisition in computed tomography (ct) applications
SE532723C2 (en) * 2007-05-03 2010-03-23 Lars Lantto Device for generating X-rays with great real focus and needs-adapted virtual focus

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3746862A (en) * 1970-11-30 1973-07-17 Picker Corp Protective circuit for x-ray tube and method of operation
US3783287A (en) * 1972-05-18 1974-01-01 Picker Corp Anode current stabilization circuit x-ray tube having stabilizer electrode

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0000079A1 (en) * 1977-06-03 1978-12-20 Richard David Albert Scanning radiographic apparatus and method.
WO1997042646A1 (en) * 1996-05-07 1997-11-13 American Science And Engineering, Inc. X-ray tubes for imaging systems
WO1998013853A1 (en) * 1996-09-27 1998-04-02 Bede Scientific Instruments Limited X-ray generator
US6282263B1 (en) 1996-09-27 2001-08-28 Bede Scientific Instruments Limited X-ray generator
US5896486A (en) * 1997-05-01 1999-04-20 Lucent Technologies Inc. Mass splice tray for optical fibers
WO2000025341A1 (en) * 1998-10-26 2000-05-04 Industrial Control Machines S.A. X-ray control device
WO2000025342A1 (en) * 1998-10-27 2000-05-04 Litton Systems, Inc. X-ray tube providing variable imaging spot size
US6236713B1 (en) 1998-10-27 2001-05-22 Litton Systems, Inc. X-ray tube providing variable imaging spot size
US9748070B1 (en) 2014-09-17 2017-08-29 Bruker Jv Israel Ltd. X-ray tube anode
GB2565138A (en) * 2017-08-04 2019-02-06 Adaptix Ltd X-ray generator
US11147150B2 (en) 2017-08-04 2021-10-12 Adaptix Ltd X-ray generator
US11302508B2 (en) 2018-11-08 2022-04-12 Bruker Technologies Ltd. X-ray tube

Also Published As

Publication number Publication date
DE2364142B2 (en) 1978-05-11
JPS4990086A (en) 1974-08-28
DE2364142C3 (en) 1982-04-22
JPS5318318B2 (en) 1978-06-14
DE2364142A1 (en) 1974-07-04
US3852605A (en) 1974-12-03
FR2212739A1 (en) 1974-07-26
FR2212739B1 (en) 1976-04-30

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee