GB1173967A - Controlling Tube Current and Anode Voltage of an X-ray Tube - Google Patents

Controlling Tube Current and Anode Voltage of an X-ray Tube

Info

Publication number
GB1173967A
GB1173967A GB1494367A GB1494367A GB1173967A GB 1173967 A GB1173967 A GB 1173967A GB 1494367 A GB1494367 A GB 1494367A GB 1494367 A GB1494367 A GB 1494367A GB 1173967 A GB1173967 A GB 1173967A
Authority
GB
United Kingdom
Prior art keywords
tube
current
output
picture
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.)
Expired
Application number
GB1494367A
Inventor
Sandor Brandelik
Laszlo Batki
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.)
Medicor Muvek
Original Assignee
Medicor Muvek
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 Medicor Muvek filed Critical Medicor Muvek
Publication of GB1173967A publication Critical patent/GB1173967A/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

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • X-Ray Techniques (AREA)

Abstract

1,173,967. Controlling X-ray exposures. MEDICOR MUVEK. March 31, 1967 [April 7, 1966], No. 14943/67. Heading G1A. The current in a radiological X-ray tube is optimized by scanning the fluorescent picture produced, integrating a signal indicative of the luminosity over those areas which the presence of high frequencies in the scanning signal shows to contain most detail and adjusting the tube current until the integrated signal has a predetermined value. The tube anode voltage is adjusted to mascinize the high frequencies in the scanning signal and consequently the amount of detail in the picture. The output of a photo-electric cell 3 or television camera scanning the fluorescent picture 2 is fed through a gate 5 to an integrator 6 and also directly to a selective amplifier 7 comprising a linear amplifier 11 and high pass filter 12 having a transmission capacity of which increases linearly with frequency. The amplifier output is fed to a pulse forming circuit 10 which opens the gate 5 when the R.M.S, value of the A.C. component of the scanning signal is above a predetermined level. The output of integrator 6 may automatically adjust a potentiometer 19 varying the current through the tube 1 until the integrator output reaches a preset value. The R.M.S. value of the amplifier output is also derived by a rectifier 8 and differentiated by a circuit 21 which adjusts the tube anode voltage by means of a potentiometer 25 until the derivitive is zero. The amount of detail in the picture is then a maximum. The circuit 21 and the potentiometers 19, 25 may be omitted and the tube current and voltage adjusted in accordance with the readings on indicators 14, 15.
GB1494367A 1966-04-07 1967-03-31 Controlling Tube Current and Anode Voltage of an X-ray Tube Expired GB1173967A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
HUME000756 1966-04-07

Publications (1)

Publication Number Publication Date
GB1173967A true GB1173967A (en) 1969-12-10

Family

ID=10999185

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1494367A Expired GB1173967A (en) 1966-04-07 1967-03-31 Controlling Tube Current and Anode Voltage of an X-ray Tube

Country Status (2)

Country Link
DE (1) DE1614150B1 (en)
GB (1) GB1173967A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL168392C (en) * 1973-10-12 1982-03-16 Philips Nv DEVICE FOR ADJUSTING A ROTATING X-RAY TUBE.

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2913582A (en) * 1954-12-20 1959-11-17 Westinghouse Electric Corp X-ray apparatus
GB821106A (en) * 1956-05-24 1959-09-30 Gen Electric Co Ltd Improvements in or relating to radiographic apparatus
FR1184655A (en) * 1956-08-09 1959-07-24 Philips Nv Fluoroscopic device
FR1262754A (en) * 1960-04-29 1961-06-05 Optische Ind De Oude Delft Nv Fluoroscopy or photo-fluorography machine
DE1112591B (en) * 1960-07-05 1961-08-10 Koch & Sterzel Kommanditgesell Measuring chamber for X-rays, with fluorescent layer and photocell scanning
US3198947A (en) * 1961-02-21 1965-08-03 Lab For Electronics Inc Apparatus for producing visual images of x-rayed objects
DE1194070B (en) * 1961-11-02 1965-06-03 Siemens Reiniger Werke Ag X-ray diagnostic apparatus with an X-ray television device

Also Published As

Publication number Publication date
DE1614150B1 (en) 1971-07-15

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Legal Events

Date Code Title Description
416 Proceeding under section 16 patents act 1949
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees