FR2023447A1 - - Google Patents

Info

Publication number
FR2023447A1
FR2023447A1 FR6939417A FR6939417A FR2023447A1 FR 2023447 A1 FR2023447 A1 FR 2023447A1 FR 6939417 A FR6939417 A FR 6939417A FR 6939417 A FR6939417 A FR 6939417A FR 2023447 A1 FR2023447 A1 FR 2023447A1
Authority
FR
France
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.)
Withdrawn
Application number
FR6939417A
Other languages
French (fr)
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.)
Varian Medical Systems Inc
Original Assignee
Varian Associates 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 Varian Associates Inc filed Critical Varian Associates Inc
Publication of FR2023447A1 publication Critical patent/FR2023447A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
    • G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
    • G01T1/16—Measuring radiation intensity
    • G01T1/161—Applications in the field of nuclear medicine, e.g. in vivo counting
    • G01T1/164—Scintigraphy
    • G01T1/1641—Static instruments for imaging the distribution of radioactivity in one or two dimensions using one or several scintillating elements; Radio-isotope cameras
    • G01T1/1645—Static instruments for imaging the distribution of radioactivity in one or two dimensions using one or several scintillating elements; Radio-isotope cameras using electron optical imaging means, e.g. image intensifier tubes, coordinate photomultiplier tubes, image converter
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
    • H01J29/36—Photoelectric screens; Charge-storage screens
    • H01J29/38—Photoelectric screens; Charge-storage screens not using charge storage, e.g. photo-emissive screen, extended cathode
    • H01J29/385—Photocathodes comprising a layer which modified the wave length of impinging radiation

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • General Health & Medical Sciences (AREA)
  • Medical Informatics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Optics & Photonics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Molecular Biology (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
FR6939417A 1968-11-15 1969-11-17 Withdrawn FR2023447A1 (xx)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US77608968A 1968-11-15 1968-11-15

Publications (1)

Publication Number Publication Date
FR2023447A1 true FR2023447A1 (xx) 1970-08-21

Family

ID=25106430

Family Applications (1)

Application Number Title Priority Date Filing Date
FR6939417A Withdrawn FR2023447A1 (xx) 1968-11-15 1969-11-17

Country Status (4)

Country Link
US (1) US3716714A (xx)
DE (1) DE1957152A1 (xx)
FR (1) FR2023447A1 (xx)
NL (1) NL6917214A (xx)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2284185A1 (fr) * 1974-09-05 1976-04-02 Siemens Ag Couche d'emission electro-optique

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8602629A (nl) * 1986-10-21 1988-05-16 Philips Nv Roentgenbeeldversterkerbuis met een scheidingslaag tussen de luminescentielaag en de photocathode.
US5225670A (en) * 1991-03-06 1993-07-06 Csl Opto-Electronics Corp. X-ray to visible image converter with a cathode emission layer having non-uniform density profile structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2284185A1 (fr) * 1974-09-05 1976-04-02 Siemens Ag Couche d'emission electro-optique

Also Published As

Publication number Publication date
DE1957152A1 (de) 1970-09-17
NL6917214A (xx) 1970-05-20
US3716714A (en) 1973-02-13

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Legal Events

Date Code Title Description
ST Notification of lapse