WO2002009140A1 - Rotation anode x-ray tube and x-ray ct device using the x-ray tube - Google Patents

Rotation anode x-ray tube and x-ray ct device using the x-ray tube Download PDF

Info

Publication number
WO2002009140A1
WO2002009140A1 PCT/JP2001/006277 JP0106277W WO0209140A1 WO 2002009140 A1 WO2002009140 A1 WO 2002009140A1 JP 0106277 W JP0106277 W JP 0106277W WO 0209140 A1 WO0209140 A1 WO 0209140A1
Authority
WO
WIPO (PCT)
Prior art keywords
ray
amount
ray tube
tube part
thermal
Prior art date
Application number
PCT/JP2001/006277
Other languages
French (fr)
Japanese (ja)
Inventor
Yoshitaka Seki
Motomichi Doi
Yoshihiko Dan
Koji Akita
Original Assignee
Hitachi Medical Corporation
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 Hitachi Medical Corporation filed Critical Hitachi Medical Corporation
Publication of WO2002009140A1 publication Critical patent/WO2002009140A1/en

Links

Classifications

    • 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
    • H01J35/08—Anodes; Anti cathodes
    • H01J35/10—Rotary anodes; Arrangements for rotating anodes; Cooling rotary anodes
    • H01J35/101—Arrangements for rotating anodes, e.g. supporting means, means for greasing, means for sealing the axle or means for shielding or protecting the driving
    • H01J35/1017—Bearings for rotating anodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2235/00—X-ray tubes
    • H01J2235/10—Drive means for anode (target) substrate
    • H01J2235/1006—Supports or shafts for target or substrate
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2235/00—X-ray tubes
    • H01J2235/12—Cooling
    • H01J2235/1208—Cooling of the bearing assembly

Landscapes

  • X-Ray Techniques (AREA)

Abstract

A rotation anode X-ray tube (30), comprising a rotation anode (31) having a rotor (35) and a fixed part (32) changed in structure and material to reduce the amount of thermal elongations thereof, the fixed part (32) further comprising an inner tube part (33) supporting bearings (9) and an outer tube part (34) covering the inner tube part, wherein the inner tube part (33) is formed of a highly thermal conductive copper and the outer tube part (34) is formed of a molybdenum with low coefficient of thermal expansion, the amount of thermal elongation is suppressed by the outer tube part (34) and the temperature rise of the bearings (9) is suppressed by the inner tube part (33), and the connection of a rotor shoulder part (36) forming the rotor (35) with an insulation support body (7) is formed in a screwing structure (thread connection) and is formed of a molybdenum (stainless steel was used before) to suppress the amount of thermal elongation so as to reinforce the connection structure, whereby the amount of movement of the focus of the X-ray tube is reduced by approx. 70% over the conventional tubes, and thus the amount of movement of the focus of the X-ray tube itself can be reduced, a mechanical strength can be increased, and the effects of the movement of the focus on an image quality can be suppressed by the thermal control of the anode of the X-ray tube of an X-ray CT device.
PCT/JP2001/006277 2000-07-21 2001-07-19 Rotation anode x-ray tube and x-ray ct device using the x-ray tube WO2002009140A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2000220709 2000-07-21
JP2000-220709 2000-07-21
JP2001041711 2001-02-19
JP2001-41711 2001-02-19

Publications (1)

Publication Number Publication Date
WO2002009140A1 true WO2002009140A1 (en) 2002-01-31

Family

ID=26596420

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2001/006277 WO2002009140A1 (en) 2000-07-21 2001-07-19 Rotation anode x-ray tube and x-ray ct device using the x-ray tube

Country Status (1)

Country Link
WO (1) WO2002009140A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014235968A (en) * 2013-06-05 2014-12-15 株式会社東芝 Rotary anode type x-ray tube

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0556958A (en) * 1991-09-05 1993-03-09 Hitachi Medical Corp X-ray tube cooler for x-ray ct device
US5345492A (en) * 1993-01-04 1994-09-06 Eureka X-Ray Tube Corp. Rotating anode x-ray tube
JPH0963522A (en) * 1995-06-12 1997-03-07 Hitachi Medical Corp X-ray source movement compensation mechanism for x-ray tube device
JP2000040480A (en) * 1998-07-23 2000-02-08 Hitachi Medical Corp Rotating anode x-ray tube
JP2000166913A (en) * 1998-12-10 2000-06-20 Ge Yokogawa Medical Systems Ltd Calibration data preparing method and radio-ct instrument

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0556958A (en) * 1991-09-05 1993-03-09 Hitachi Medical Corp X-ray tube cooler for x-ray ct device
US5345492A (en) * 1993-01-04 1994-09-06 Eureka X-Ray Tube Corp. Rotating anode x-ray tube
JPH0963522A (en) * 1995-06-12 1997-03-07 Hitachi Medical Corp X-ray source movement compensation mechanism for x-ray tube device
JP2000040480A (en) * 1998-07-23 2000-02-08 Hitachi Medical Corp Rotating anode x-ray tube
JP2000166913A (en) * 1998-12-10 2000-06-20 Ge Yokogawa Medical Systems Ltd Calibration data preparing method and radio-ct instrument

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014235968A (en) * 2013-06-05 2014-12-15 株式会社東芝 Rotary anode type x-ray tube

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