GB554699A - Improvements in and relating to x-ray methods and apparatus - Google Patents

Improvements in and relating to x-ray methods and apparatus

Info

Publication number
GB554699A
GB554699A GB57442A GB57442A GB554699A GB 554699 A GB554699 A GB 554699A GB 57442 A GB57442 A GB 57442A GB 57442 A GB57442 A GB 57442A GB 554699 A GB554699 A GB 554699A
Authority
GB
United Kingdom
Prior art keywords
screen
image
screens
persistent
ray
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
GB57442A
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.)
Philips Lamps Ltd
Koninklijke Philips NV
Original Assignee
Philips Lamps Ltd
Philips Gloeilampenfabrieken NV
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 Philips Lamps Ltd, Philips Gloeilampenfabrieken NV filed Critical Philips Lamps Ltd
Priority to GB57442A priority Critical patent/GB554699A/en
Publication of GB554699A publication Critical patent/GB554699A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B42/00—Obtaining records using waves other than optical waves; Visualisation of such records by using optical means
    • G03B42/02—Obtaining records using waves other than optical waves; Visualisation of such records by using optical means using X-rays
    • G03B42/025—Positioning or masking the X-ray film cartridge in the radiographic apparatus
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/02—Viewing or reading apparatus
    • G02B27/022—Viewing apparatus
    • G02B27/023—Viewing apparatus for viewing X-ray images using image converters, e.g. radioscopes

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Apparatus For Radiation Diagnosis (AREA)

Abstract

554,699. R÷ntgen-ray apparatus. PHILIPS LAMPS, Ltd., and BAKER, W. E, Jan. 14, 1942, No. 574. [Class 98 (i)] Radiographs are produced by effecting instantaneous excitation of the X-ray tube to produce an image on a fluorescent screen giving a persistent image, and then photographing the persistent image. The image may be thereafter obliterated by flooding the screen with infra-red radiation. Apparatus employing persistent image screens for visual X-ray screen examination is also described and claimed. Fig. 2 shows an apparatus in which the persistent image formed on a screen 24 by instantaneous excitation of the tube 21 is photographed by a miniature camera 25. The screen, which may have a persistance of the order of one or two seconds without appreciable image deterioration, is of twice the length required for each photograph and is slidably mounted so that either half can be brought into operative position while the other lies within one of two lateral enclosures 29, where it is subjected to infra-red radiation from a lamp to obliterate any residual image in readiness for the next exposure. Fig. 1 shows an apparatus for visual examination in mutually perpendicular directions, for example in examining hip-joint fractures. and comprising vertical and horizontal persistent image screens 14, 12 respectively, the latter being slidably mounted in a housing 10. After images have been formed on both screens by a single movable X-ray tube, or by two tubes at right-angles, the screen 12 may be withdrawn and the images on the two screens compared. The housing 10 may be replaced by an interchangeable fluoroscope and cassette holder as described in Specification 548,999, and the screen 14 may also be enclosed.
GB57442A 1942-01-14 1942-01-14 Improvements in and relating to x-ray methods and apparatus Expired GB554699A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB57442A GB554699A (en) 1942-01-14 1942-01-14 Improvements in and relating to x-ray methods and apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB57442A GB554699A (en) 1942-01-14 1942-01-14 Improvements in and relating to x-ray methods and apparatus

Publications (1)

Publication Number Publication Date
GB554699A true GB554699A (en) 1943-07-15

Family

ID=9706772

Family Applications (1)

Application Number Title Priority Date Filing Date
GB57442A Expired GB554699A (en) 1942-01-14 1942-01-14 Improvements in and relating to x-ray methods and apparatus

Country Status (1)

Country Link
GB (1) GB554699A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2511097A (en) * 1950-06-13 Device for obtaining x-ray
US2523306A (en) * 1947-09-23 1950-09-26 Herman F Kaiser Application of radiography to infrared phosphors
US2526094A (en) * 1947-09-24 1950-10-17 Picker X Ray Corp Waite Mfg X-ray camera

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2511097A (en) * 1950-06-13 Device for obtaining x-ray
US2523306A (en) * 1947-09-23 1950-09-26 Herman F Kaiser Application of radiography to infrared phosphors
US2526094A (en) * 1947-09-24 1950-10-17 Picker X Ray Corp Waite Mfg X-ray camera

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