EP0001729A3 - Process and device for improving the radiological definition of the focal spots of x-ray tubes - Google Patents

Process and device for improving the radiological definition of the focal spots of x-ray tubes Download PDF

Info

Publication number
EP0001729A3
EP0001729A3 EP78400121A EP78400121A EP0001729A3 EP 0001729 A3 EP0001729 A3 EP 0001729A3 EP 78400121 A EP78400121 A EP 78400121A EP 78400121 A EP78400121 A EP 78400121A EP 0001729 A3 EP0001729 A3 EP 0001729A3
Authority
EP
European Patent Office
Prior art keywords
radiological
definition
improving
ray tubes
focal spots
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
EP78400121A
Other versions
EP0001729A2 (en
EP0001729B1 (en
Inventor
Dang Tran Quang
Jacques Leguen
Jacques Delair
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.)
Compagnie Generale de Radiologie SA
Original Assignee
Compagnie Generale de Radiologie SA
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 Compagnie Generale de Radiologie SA filed Critical Compagnie Generale de Radiologie SA
Publication of EP0001729A2 publication Critical patent/EP0001729A2/en
Publication of EP0001729A3 publication Critical patent/EP0001729A3/en
Application granted granted Critical
Publication of EP0001729B1 publication Critical patent/EP0001729B1/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
    • 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
EP78400121A 1977-10-21 1978-09-29 Process and device for improving the radiological definition of a radiodiagnostic system Expired EP0001729B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7731743A FR2406890A1 (en) 1977-10-21 1977-10-21 METHOD AND DEVICE FOR IMPROVING THE RADIOLOGICAL DEFINITION OF X-RAY TUBE FIREPLACES
FR7731743 1977-10-21

Publications (3)

Publication Number Publication Date
EP0001729A2 EP0001729A2 (en) 1979-05-02
EP0001729A3 true EP0001729A3 (en) 1979-08-08
EP0001729B1 EP0001729B1 (en) 1981-03-25

Family

ID=9196804

Family Applications (1)

Application Number Title Priority Date Filing Date
EP78400121A Expired EP0001729B1 (en) 1977-10-21 1978-09-29 Process and device for improving the radiological definition of a radiodiagnostic system

Country Status (7)

Country Link
US (1) US4213048A (en)
EP (1) EP0001729B1 (en)
JP (1) JPS5484988A (en)
CA (1) CA1118115A (en)
DE (1) DE2860563D1 (en)
FR (1) FR2406890A1 (en)
IT (1) IT1159940B (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5968200A (en) * 1982-10-08 1984-04-18 Yokogawa Hokushin Electric Corp X-ray ct apparatus
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
US5007074A (en) * 1989-07-25 1991-04-09 Picker International, Inc. X-ray tube anode focusing by low voltage bias
FR2687505B1 (en) * 1992-02-13 1994-04-08 General Electric Cgr CIRCUIT FOR HEATING CATHODE FILAMENTS OF AN X-RAY TUBE.
US5535254A (en) * 1995-05-17 1996-07-09 Carlson; Todd R. X-ray tube with self-biasing deck
DE20218138U1 (en) * 2002-11-21 2004-04-08 Heuft Systemtechnik Gmbh X-ray system for generating short X-ray pulses and an inspection device working with such an X-ray system
US8401151B2 (en) * 2009-12-16 2013-03-19 General Electric Company X-ray tube for microsecond X-ray intensity switching
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

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1057152A (en) * 1951-04-06 1954-03-05 Thomson Houston Comp Francaise Method and device for controlling x-ray tubes
FR2060772A5 (en) * 1969-09-02 1971-06-18 Watkins Johnson Co
US3992633A (en) * 1973-09-04 1976-11-16 The Machlett Laboratories, Incorporated Broad aperture X-ray generator

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3743836A (en) * 1972-02-22 1973-07-03 Machlett Lab Inc X-ray focal spot control system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1057152A (en) * 1951-04-06 1954-03-05 Thomson Houston Comp Francaise Method and device for controlling x-ray tubes
FR2060772A5 (en) * 1969-09-02 1971-06-18 Watkins Johnson Co
US3992633A (en) * 1973-09-04 1976-11-16 The Machlett Laboratories, Incorporated Broad aperture X-ray generator

Also Published As

Publication number Publication date
FR2406890B1 (en) 1980-09-12
FR2406890A1 (en) 1979-05-18
EP0001729A2 (en) 1979-05-02
JPS5484988A (en) 1979-07-06
EP0001729B1 (en) 1981-03-25
IT7828853A0 (en) 1978-10-18
CA1118115A (en) 1982-02-09
US4213048A (en) 1980-07-15
DE2860563D1 (en) 1981-04-16
IT1159940B (en) 1987-03-04

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