JPS55130100A - X-ray television equipment - Google Patents

X-ray television equipment

Info

Publication number
JPS55130100A
JPS55130100A JP3856379A JP3856379A JPS55130100A JP S55130100 A JPS55130100 A JP S55130100A JP 3856379 A JP3856379 A JP 3856379A JP 3856379 A JP3856379 A JP 3856379A JP S55130100 A JPS55130100 A JP S55130100A
Authority
JP
Japan
Prior art keywords
image signals
average value
photo
circuit
timer
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
JP3856379A
Other languages
Japanese (ja)
Other versions
JPS6330759B2 (en
Inventor
Yasuyoshi Doi
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.)
Shimadzu Corp
Original Assignee
Shimadzu Corp
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 Shimadzu Corp filed Critical Shimadzu Corp
Priority to JP3856379A priority Critical patent/JPS55130100A/en
Publication of JPS55130100A publication Critical patent/JPS55130100A/en
Publication of JPS6330759B2 publication Critical patent/JPS6330759B2/ja
Granted 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
    • H05G1/38—Exposure time
    • H05G1/42—Exposure time using arrangements for switching when a predetermined dose of radiation has been applied, e.g. in which the switching instant is determined by measuring the electrical energy supplied to the tube
    • H05G1/44—Exposure time using arrangements for switching when a predetermined dose of radiation has been applied, e.g. in which the switching instant is determined by measuring the electrical energy supplied to the tube in which the switching instant is determined by measuring the amount of radiation directly

Landscapes

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

Abstract

PURPOSE:To obtain a photograph with preset concentration by setting the film concentration set point at the photo-timer automatic photography to the function of the ratio between the peak and average value in the period which corresponding to the photo-timer signal detection range for the image signals of a television equipment. CONSTITUTION:The output of a amplifier 4 which amplifies image signals is input to the peak hold circuit 7 and the wave heightness value of the image signals which correspond to the detection range between every television fields is retained. The output of the amplifier 4 is also fed into the average value circuit 8 while fluoroscopy images are obserbed and the average value of the image signals is obtained. The wave height value of the image signals and their average value are divided in the division circuit A2 and are multiplied by the DC voltage set by the film concentration setting device VR in the multiplication circuit A3. The result is fed into the comparator A1 of the photo-timer as the film concentration set point at the time of photography.
JP3856379A 1979-03-30 1979-03-30 X-ray television equipment Granted JPS55130100A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3856379A JPS55130100A (en) 1979-03-30 1979-03-30 X-ray television equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3856379A JPS55130100A (en) 1979-03-30 1979-03-30 X-ray television equipment

Publications (2)

Publication Number Publication Date
JPS55130100A true JPS55130100A (en) 1980-10-08
JPS6330759B2 JPS6330759B2 (en) 1988-06-20

Family

ID=12528761

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3856379A Granted JPS55130100A (en) 1979-03-30 1979-03-30 X-ray television equipment

Country Status (1)

Country Link
JP (1) JPS55130100A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2477826A1 (en) * 1980-03-04 1981-09-11 Siemens Ag RADIO-DIAGNOSTIC APPARATUS HAVING MEANS FOR FORMING A TRANSPARENCY SIGNAL

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01178460U (en) * 1988-05-25 1989-12-20

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54153589A (en) * 1978-05-25 1979-12-03 Toshiba Corp Bed unit for x-ray television

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54153589A (en) * 1978-05-25 1979-12-03 Toshiba Corp Bed unit for x-ray television

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2477826A1 (en) * 1980-03-04 1981-09-11 Siemens Ag RADIO-DIAGNOSTIC APPARATUS HAVING MEANS FOR FORMING A TRANSPARENCY SIGNAL

Also Published As

Publication number Publication date
JPS6330759B2 (en) 1988-06-20

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