GB2007950A - X-ray system signal derivation circuits for heat unit indicators and/or calibration meters - Google Patents

X-ray system signal derivation circuits for heat unit indicators and/or calibration meters

Info

Publication number
GB2007950A
GB2007950A GB7836982A GB7836982A GB2007950A GB 2007950 A GB2007950 A GB 2007950A GB 7836982 A GB7836982 A GB 7836982A GB 7836982 A GB7836982 A GB 7836982A GB 2007950 A GB2007950 A GB 2007950A
Authority
GB
United Kingdom
Prior art keywords
heat unit
heat
monitored
ray tube
signal derivation
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
GB7836982A
Other versions
GB2007950B (en
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.)
FRANCE R R
Original Assignee
FRANCE R R
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 FRANCE R R filed Critical FRANCE R R
Priority to GB7836982A priority Critical patent/GB2007950B/en
Publication of GB2007950A publication Critical patent/GB2007950A/en
Priority to CA000334636A priority patent/CA1151314A/en
Priority to US06/071,252 priority patent/US4297638A/en
Priority to US06/287,202 priority patent/US4386320A/en
Application granted granted Critical
Publication of GB2007950B publication Critical patent/GB2007950B/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

Abstract

Milliampere and kilovolt signals are monitored from the X-ray tube system high tension transformer. These signals may be connected to a heat unit indicator or a calibration meter or both. With the heat unit indicator, the heat level in an X-ray tube anode is monitored and referred to the level corresponding to the ambient room temperature as zero reference. As successive single exposures or series of exposures are made, the X-ray tube heat loading is automatically monitored and displayed. The cooling characteristics of the tube are automatically reflected in the reading. A calibration meter may be connected to the signal derivation circuitry to indicate a plurality of operating parameters. The circuitry includes automatic scaling device for maintaining the relatively accurate signals required for the accurate operation of the heat unit indicator and the calibration meter.
GB7836982A 1977-06-17 1978-09-15 X-ray system signal derivation circuits for heat unit indicators and/or calibrating Expired GB2007950B (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB7836982A GB2007950B (en) 1977-06-17 1978-09-15 X-ray system signal derivation circuits for heat unit indicators and/or calibrating
CA000334636A CA1151314A (en) 1978-09-15 1979-08-27 X-ray system signal derivation circuits for heat unit indicators and/or calibration meters
US06/071,252 US4297638A (en) 1978-09-15 1979-08-30 X-ray system signal derivation circuits for heat unit indicators and/or calibration meters
US06/287,202 US4386320A (en) 1978-09-15 1981-07-27 X-Ray system signal derivation circuits for heat unit indicators and/or calibration meters

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB2545877 1977-06-17
GB7836982A GB2007950B (en) 1977-06-17 1978-09-15 X-ray system signal derivation circuits for heat unit indicators and/or calibrating

Publications (2)

Publication Number Publication Date
GB2007950A true GB2007950A (en) 1979-05-23
GB2007950B GB2007950B (en) 1982-02-17

Family

ID=26257690

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7836982A Expired GB2007950B (en) 1977-06-17 1978-09-15 X-ray system signal derivation circuits for heat unit indicators and/or calibrating

Country Status (1)

Country Link
GB (1) GB2007950B (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2530019A1 (en) * 1982-07-09 1984-01-13 Thomson Csf Overheating protection system for X=ray tube rotary anode
EP0118160A2 (en) * 1983-03-08 1984-09-12 Philips Patentverwaltung GmbH Method for the detection of operative failures and X-ray generator for carrying out this method
FR2635633A1 (en) * 1988-08-19 1990-02-23 Varian Associates DEVICE FOR CONTROLLING AN X-RAY APPARATUS
US7597476B2 (en) 2007-11-07 2009-10-06 Dornier Medtech Systems Gmbh Apparatus and method for determining air-kerma rate

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2530019A1 (en) * 1982-07-09 1984-01-13 Thomson Csf Overheating protection system for X=ray tube rotary anode
EP0118160A2 (en) * 1983-03-08 1984-09-12 Philips Patentverwaltung GmbH Method for the detection of operative failures and X-ray generator for carrying out this method
EP0118160A3 (en) * 1983-03-08 1985-12-04 Philips Patentverwaltung Gmbh Method for the detection of operative failures and x-ray generator for carrying out this method
FR2635633A1 (en) * 1988-08-19 1990-02-23 Varian Associates DEVICE FOR CONTROLLING AN X-RAY APPARATUS
US7597476B2 (en) 2007-11-07 2009-10-06 Dornier Medtech Systems Gmbh Apparatus and method for determining air-kerma rate

Also Published As

Publication number Publication date
GB2007950B (en) 1982-02-17

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee