EP0092705B1 - Röntgendiagnostikanlage mit einer Bildverstärker-Fernsehkette - Google Patents

Röntgendiagnostikanlage mit einer Bildverstärker-Fernsehkette Download PDF

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Publication number
EP0092705B1
EP0092705B1 EP83103365A EP83103365A EP0092705B1 EP 0092705 B1 EP0092705 B1 EP 0092705B1 EP 83103365 A EP83103365 A EP 83103365A EP 83103365 A EP83103365 A EP 83103365A EP 0092705 B1 EP0092705 B1 EP 0092705B1
Authority
EP
European Patent Office
Prior art keywords
ray
image intensifier
radiation
image
ray tube
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
EP83103365A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0092705A1 (de
Inventor
Dieter Schmidt
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP0092705A1 publication Critical patent/EP0092705A1/de
Application granted granted Critical
Publication of EP0092705B1 publication Critical patent/EP0092705B1/de
Expired legal-status Critical Current

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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
    • H05G1/64—Circuit arrangements for X-ray apparatus incorporating image intensifiers
    • 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
    • H05G1/54—Protecting or lifetime prediction

Definitions

  • the invention relates to an X-ray diagnostic system according to the preamble of the claim.
  • DE-A-2 803 913 describes an X-ray diagnostic system with an image intensifier television chain and an X-ray generator for feeding the X-ray tube. There is a control circuit for the dose rate that keeps it constant based on a set target value. The actual value of the dose rate is formed by a sensor provided in the light path between the output of the X-ray image intensifier and the television camera.
  • FR-A-2 305 094 describes an X-ray diagnostic system according to the preamble of the claim, in which a circuit forming an automatic exposure device receives a signal which is formed by a radiation detector which is arranged after the patient. Another signal is derived from the video signal from a television camera. Both signals are compared with a target value and the X-ray tube is switched off when a predetermined radiation dose is reached.
  • the invention has for its object to provide an X-ray diagnostic system of the type mentioned, in which it is monitored whether an image actually appears at the output of the X-ray image intensifier when X-ray radiation occurs and a television signal is present and in which the X-ray tube is automatically switched off in the event of faults.
  • both the X-ray image intensifier and the television chain are monitored for faults, so that the patient is not exposed to unused radiation and unnecessary stress on the generator and the X-ray tube is avoided.
  • an X-ray device which carries an X-ray tube 2 and an X-ray image intensifier 3 on a C-arm 1.
  • the patient 4 lies in the beam path between the X-ray tube 2 and the X-ray image intensifier 3.
  • the X-ray image amplifier 3 is followed by a television chain with a television camera 5, a video amplifier 6 and a monitor 7.
  • the x-ray tube 2 is fed by an x-ray generator 8.
  • a measuring sensor 9 for X-ray radiation is arranged, which feeds an electrical signal to a safety circuit 10 when X-ray radiation occurs.
  • a light measuring sensor 11 is provided, which supplies a signal to the safety circuit 10 when light appears on the output screen of the X-ray image intensifier 3.
  • a signal is fed to the safety circuit 10 via a coupling stage 12 when a video signal occurs at the output of the video amplifier 6.
  • the safety circuit 10 monitors whether after switching on the X-ray tube 2, i.e. after the occurrence of x-rays, an output image actually appears on the output screen of the x-ray image intensifier 3 and whether a video signal is generated which causes the x-ray image to be displayed on the monitor 7. If there is an error in the imaging system, i.e. If the output image of the X-ray image intensifier 3 or the video signal is missing, the safety circuit 10 supplies the X-ray generator 8 with a control signal which causes the X-ray tube 2 to be switched off.
  • a film or single-image camera can also be optically coupled to the exit fluorescent screen of the X-ray image intensifier 3.
  • the safety circuit 10 also monitors the operation with these cameras.
  • the x-ray generator 8 can be accommodated together with the x-ray tube 2 in a common housing (single-boiler generator).

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Apparatus For Radiation Diagnosis (AREA)
  • X-Ray Techniques (AREA)
  • Closed-Circuit Television Systems (AREA)
EP83103365A 1982-04-23 1983-04-06 Röntgendiagnostikanlage mit einer Bildverstärker-Fernsehkette Expired EP0092705B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19823215114 DE3215114A1 (de) 1982-04-23 1982-04-23 Roengtendiagnostikanlage mit einer bildverstaerker-fernsehkette
DE3215114 1982-04-23

Publications (2)

Publication Number Publication Date
EP0092705A1 EP0092705A1 (de) 1983-11-02
EP0092705B1 true EP0092705B1 (de) 1986-07-16

Family

ID=6161709

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83103365A Expired EP0092705B1 (de) 1982-04-23 1983-04-06 Röntgendiagnostikanlage mit einer Bildverstärker-Fernsehkette

Country Status (4)

Country Link
US (1) US4530007A (enrdf_load_stackoverflow)
EP (1) EP0092705B1 (enrdf_load_stackoverflow)
JP (1) JPS58197699A (enrdf_load_stackoverflow)
DE (1) DE3215114A1 (enrdf_load_stackoverflow)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3432665A1 (de) * 1984-09-05 1986-03-13 Siemens AG, 1000 Berlin und 8000 München Roentgendiagnostikeinrichtung
DE58905562D1 (de) * 1989-10-16 1993-10-14 Siemens Ag Röntgeneinrichtung.
DE102004017185B4 (de) * 2004-04-07 2010-06-10 Siemens Ag Medizinisches Gesamtsystem

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3567854A (en) * 1968-10-23 1971-03-02 Gen Electric Automatic brightness control for x-ray image intensifier system
DE2511523A1 (de) * 1975-03-15 1976-09-23 Philips Patentverwaltung Roentgenanlage mit einer fernseheinrichtung und einem belichtungsautomaten
DE2550437C2 (de) * 1975-11-10 1985-03-28 Siemens AG, 1000 Berlin und 8000 München Belichtungsautomat für ein Röntgenaufnahmegerät
JPS536593A (en) * 1976-07-08 1978-01-21 Toshiba Corp X-ray apparatus for diagnosis
DE2803913C2 (de) * 1978-01-30 1986-01-30 Siemens AG, 1000 Berlin und 8000 München Röntgendiagnostikanlage mit einer Bildverstärker-Fernsehkette

Also Published As

Publication number Publication date
EP0092705A1 (de) 1983-11-02
US4530007A (en) 1985-07-16
DE3215114A1 (de) 1983-10-27
JPH0317200B2 (enrdf_load_stackoverflow) 1991-03-07
JPS58197699A (ja) 1983-11-17

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