GB929293A - Improvements in radiographic systems and method - Google Patents

Improvements in radiographic systems and method

Info

Publication number
GB929293A
GB929293A GB8656/61A GB865661A GB929293A GB 929293 A GB929293 A GB 929293A GB 8656/61 A GB8656/61 A GB 8656/61A GB 865661 A GB865661 A GB 865661A GB 929293 A GB929293 A GB 929293A
Authority
GB
United Kingdom
Prior art keywords
cineradiographic
march
rays
focal spot
grid
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
GB8656/61A
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.)
Machlett Laboratories Inc
Original Assignee
Machlett Laboratories Inc
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 Machlett Laboratories Inc filed Critical Machlett Laboratories Inc
Publication of GB929293A publication Critical patent/GB929293A/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
    • H05G1/52—Target size or shape; Direction of electron beam, e.g. in tubes with one anode and more than one cathode
    • 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
    • H01J35/06—Cathodes
    • H01J35/064—Details of the emitter, e.g. material or structure

Landscapes

  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Exposure And Positioning Against Photoresist Photosensitive Materials (AREA)
  • X-Ray Techniques (AREA)

Abstract

929,293. X-Ray systems. MACHLETT LABORATORIES Inc. March 9, 1961 [March 31, 1960], No. 8656/61. Class 38 (4). [Also in Group XL (a)] A system for selectively producing conventional radiographic or cineradiographic exposures comprises an X-ray tube having a large focal spot filament 55 for conventional X- rays, and small focal spot filament 50 havirg a field forming switching grid 46 energized at the same time for cineradiographic X-rays, the grid normally being negatively biased to prevent electron flow, square positive pulses being applied when an exposure is required. A relay switching system is provided to select one or other filaments. Specification 824,998 is referred to.
GB8656/61A 1960-03-31 1961-03-09 Improvements in radiographic systems and method Expired GB929293A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US1910160A 1960-03-31 1960-03-31

Publications (1)

Publication Number Publication Date
GB929293A true GB929293A (en) 1963-06-19

Family

ID=21791440

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8656/61A Expired GB929293A (en) 1960-03-31 1961-03-09 Improvements in radiographic systems and method

Country Status (1)

Country Link
GB (1) GB929293A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2037767A1 (en) * 1970-07-30 1972-02-03 Siemens Ag X-ray diagnostic apparatus for short exposure times
DE3244636A1 (en) 1982-10-08 1984-04-12 Yokogawa Hokushin Electric Corp., Musashino, Tokyo COMPUTER-BASED ROENTGENTOMOGRAPH
DE3249542A1 (en) * 1982-10-08 1984-06-20 Yokogawa Hokushin Electric Corp., Musashino, Tokio/Tokyo Computer-supported X-ray tomograph
EP0986090A1 (en) * 1998-03-16 2000-03-15 Kabushiki Kaisha Toshiba X-ray tube

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2037767A1 (en) * 1970-07-30 1972-02-03 Siemens Ag X-ray diagnostic apparatus for short exposure times
DE3244636A1 (en) 1982-10-08 1984-04-12 Yokogawa Hokushin Electric Corp., Musashino, Tokyo COMPUTER-BASED ROENTGENTOMOGRAPH
DE3249542A1 (en) * 1982-10-08 1984-06-20 Yokogawa Hokushin Electric Corp., Musashino, Tokio/Tokyo Computer-supported X-ray tomograph
EP0986090A1 (en) * 1998-03-16 2000-03-15 Kabushiki Kaisha Toshiba X-ray tube
EP0986090A4 (en) * 1998-03-16 2002-01-16 Toshiba Kk X-ray tube

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