JPS6396807U - - Google Patents

Info

Publication number
JPS6396807U
JPS6396807U JP1987177046U JP17704687U JPS6396807U JP S6396807 U JPS6396807 U JP S6396807U JP 1987177046 U JP1987177046 U JP 1987177046U JP 17704687 U JP17704687 U JP 17704687U JP S6396807 U JPS6396807 U JP S6396807U
Authority
JP
Japan
Prior art keywords
anode
computer tomograph
electron beam
frequency
scanning
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
JP1987177046U
Other languages
English (en)
Other versions
JPH079073Y2 (ja
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 filed Critical
Publication of JPS6396807U publication Critical patent/JPS6396807U/ja
Application granted granted Critical
Publication of JPH079073Y2 publication Critical patent/JPH079073Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • A61B6/03—Computed tomography [CT]
    • A61B6/032—Transmission computed tomography [CT]
    • 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
    • A61B6/4028—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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J35/00—X-ray tubes
    • H01J35/24—Tubes wherein the point of impact of the cathode ray on the anode or anticathode is movable relative to the surface thereof
    • H01J35/30—Tubes wherein the point of impact of the cathode ray on the anode or anticathode is movable relative to the surface thereof by deflection of the cathode ray

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Medical Informatics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Molecular Biology (AREA)
  • Biophysics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Optics & Photonics (AREA)
  • Pathology (AREA)
  • Radiology & Medical Imaging (AREA)
  • Biomedical Technology (AREA)
  • Physics & Mathematics (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Pulmonology (AREA)
  • Theoretical Computer Science (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • X-Ray Techniques (AREA)
  • Analysing Materials By The Use Of Radiation (AREA)

Description

【図面の簡単な説明】
第１図は本考案を説明するためのコンピユータ
トモグラフの概略を示し、第２図は第１図による
コンピユータトモグラフの陽極および焦点軌道を
示す。 １……真空管、２……電子銃、３……ヒータ、
４……電子ビーム、６……焦点調整コイル、７…
…コイル、８……測定フイールド、９……陽極、
１１……軌道面、１２……Ｘ線束、１３……ベツ
ド、１４……患者、１５……Ｘ線検出器、１６…
…Ｘ線窓、１８……焦点軌道。

Claims (1)

  1. 【実用新案登録請求の範囲】 (1) 測定フイールド８を包囲する陽極９を備え
    、測定フイールド８の投射ためのＸ線１２が種々
    の方向から生じさせられるように電子ビーム４が
    前記陽極上で回転するようなコンピユータトモグ
    ラフにおいて、電子ビーム４が陽極９の表面１１
    を方位角の方向にも半径方向にも走査して、陽極
    ８上の焦点から途切れのない波形軌道を描くよう
    に、電子ビーム４のための偏向装置７，７ａを構
    成したことを特徴とするコンピユータトモグラフ
    。 (2) 電子ビーム４のための回転周波数、走査周
    波数および掃引周波数が同期化されていることを
    特徴とする実用新案登録請求の範囲第１項記載の
    コンピユータトモグラフ。 (3) 同期化が、１つの投射に属する２つの走査
    値の取り出しの間の時間において掃引周波数の４
    分の１または２分の１の周期またはその整数倍の
    周期が存在するように設定されていることを特徴
    とする実用新案登録請求の範囲第２項記載のコン
    ピユータトモグラフ。 (4) 同期化が、焦点が投射のそれぞれの走査時
    点で陽極９上の中心円１７と交差するように、即
    ち半径方向の焦点偏向の最大点または最小点がそ
    れぞれの走査時点にあるように設定されているこ
    とを特徴とする実用新案登録請求の範囲第３項記
    載のコンピユータトモグラフ。
JP1987177046U 1986-11-25 1987-11-19 コンピユータトモグラフ Expired - Lifetime JPH079073Y2 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3640195.1 1986-11-25
DE3640195 1986-11-25

Publications (2)

Publication Number Publication Date
JPS6396807U true JPS6396807U (ja) 1988-06-22
JPH079073Y2 JPH079073Y2 (ja) 1995-03-06

Family

ID=6314695

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1987177046U Expired - Lifetime JPH079073Y2 (ja) 1986-11-25 1987-11-19 コンピユータトモグラフ

Country Status (4)

Country Link
US (1) US4914681A (ja)
EP (1) EP0269927B1 (ja)
JP (1) JPH079073Y2 (ja)
DE (1) DE3785728D1 (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009036575A (ja) * 2007-07-31 2009-02-19 Omron Corp Ｘ線検査装置およびｘ線検査方法
JP2010508080A (ja) * 2006-10-31 2010-03-18 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ 掃引アノードｃｔスキャナ

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4139150C1 (en) * 1991-11-28 1993-06-24 Siemens Ag, 8000 Muenchen, De Computer tomograph with part ring formed X=ray source and detector - has double ring system without complementary interpolation
US5241577A (en) * 1992-01-06 1993-08-31 Picker International, Inc. X-ray tube with bearing slip ring
EP0550983B1 (en) * 1992-01-06 1996-08-28 Picker International, Inc. X-ray tube with ferrite core filament transformer
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
US5200985A (en) * 1992-01-06 1993-04-06 Picker International, Inc. X-ray tube with capacitively coupled filament drive
US5386445A (en) * 1993-12-14 1995-01-31 Imatron, Inc. Method and apparatus for electron beam focusing adjustment by electrostatic control of the distribution of beam-generated positive ions in a scanning electron beam computed tomography scanner
DE102007019355A1 (de) * 2006-06-26 2008-01-03 Forster, Jan Vorrichtung zur Bestrahlung von Gewebe mit mindestens einer Elektronenquelle sowie mit einer Mehrzahl von Strahlerköpfen
DE102012005767A1 (de) * 2012-03-25 2013-09-26 DüRR DENTAL AG Phasenkontrast-Röntgen-Tomographiegerät
DE102013206252A1 (de) * 2013-04-09 2014-10-09 Helmholtz-Zentrum Dresden - Rossendorf E.V. Anordnung zur schnellen Elektronenstrahl-Röntgencomputertomographie
US9855445B2 (en) 2016-04-01 2018-01-02 Varian Medical Systems, Inc. Radiation therapy systems and methods for delivering doses to a target volume
US11590364B2 (en) 2017-07-21 2023-02-28 Varian Medical Systems International Ag Material inserts for radiation therapy
US10549117B2 (en) 2017-07-21 2020-02-04 Varian Medical Systems, Inc Geometric aspects of radiation therapy planning and treatment
US11712579B2 (en) 2017-07-21 2023-08-01 Varian Medical Systems, Inc. Range compensators for radiation therapy
US10183179B1 (en) 2017-07-21 2019-01-22 Varian Medical Systems, Inc. Triggered treatment systems and methods
US10843011B2 (en) 2017-07-21 2020-11-24 Varian Medical Systems, Inc. Particle beam gun control systems and methods
US10092774B1 (en) 2017-07-21 2018-10-09 Varian Medical Systems International, AG Dose aspects of radiation therapy planning and treatment
EP3967367A1 (en) * 2017-11-16 2022-03-16 Varian Medical Systems Inc Increased beam output and dynamic field shaping for radiotherapy system
US10910188B2 (en) 2018-07-25 2021-02-02 Varian Medical Systems, Inc. Radiation anode target systems and methods
US10814144B2 (en) 2019-03-06 2020-10-27 Varian Medical Systems, Inc. Radiation treatment based on dose rate
US10918886B2 (en) 2019-06-10 2021-02-16 Varian Medical Systems, Inc. Flash therapy treatment planning and oncology information system having dose rate prescription and dose rate mapping
US11865361B2 (en) 2020-04-03 2024-01-09 Varian Medical Systems, Inc. System and method for scanning pattern optimization for flash therapy treatment planning
US11541252B2 (en) 2020-06-23 2023-01-03 Varian Medical Systems, Inc. Defining dose rate for pencil beam scanning
EP3933881A1 (en) 2020-06-30 2022-01-05 VEC Imaging GmbH & Co. KG X-ray source with multiple grids
US11957934B2 (en) 2020-07-01 2024-04-16 Siemens Healthineers International Ag Methods and systems using modeling of crystalline materials for spot placement for radiation therapy

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52123188A (en) * 1976-04-09 1977-10-17 Jeol Ltd Equipment to obtain x-ray body axis tomogram image

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1568782A (en) * 1976-02-28 1980-06-04 Jeol Ltd Apparatus for obtaining an x-ray image of a slice plane of an object
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
DE2811464A1 (de) * 1977-03-17 1978-09-21 Jacob Haimson Verfahren und vorrichtung zum erzeugen von roentgenstrahlen aus verschiedenen richtungen ohne sich bewegende teile
GB1604252A (en) * 1977-06-03 1981-12-09 Emi Ltd X-ray generating arrangements
US4392235A (en) * 1979-08-16 1983-07-05 General Electric Company Electronically scanned x-ray tomography system
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
DE3401749A1 (de) * 1984-01-19 1985-08-01 Siemens AG, 1000 Berlin und 8000 München Roentgendiagnostikeinrichtung mit einer roentgenroehre
US4631741A (en) * 1984-04-05 1986-12-23 Imatron, Inc. Beam spot monitoring arrangement for use in a scanning electron beam computed tomography scanner and method

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52123188A (en) * 1976-04-09 1977-10-17 Jeol Ltd Equipment to obtain x-ray body axis tomogram image

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010508080A (ja) * 2006-10-31 2010-03-18 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ 掃引アノードｃｔスキャナ
JP2009036575A (ja) * 2007-07-31 2009-02-19 Omron Corp Ｘ線検査装置およびｘ線検査方法

Also Published As

Publication number Publication date
JPH079073Y2 (ja) 1995-03-06
EP0269927B1 (de) 1993-05-05
US4914681A (en) 1990-04-03
EP0269927A1 (de) 1988-06-08
DE3785728D1 (de) 1993-06-09

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