FR2384415A1 - X=Rays directed from ring of targets onto object - by moving electron beam directed onto targets without moving parts - Google Patents

X=Rays directed from ring of targets onto object - by moving electron beam directed onto targets without moving parts

Info

Publication number
FR2384415A1
FR2384415A1 FR7807665A FR7807665A FR2384415A1 FR 2384415 A1 FR2384415 A1 FR 2384415A1 FR 7807665 A FR7807665 A FR 7807665A FR 7807665 A FR7807665 A FR 7807665A FR 2384415 A1 FR2384415 A1 FR 2384415A1
Authority
FR
France
Prior art keywords
targets
electron beam
onto
rays
target
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
FR7807665A
Other languages
French (fr)
Other versions
FR2384415B3 (en
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.)
Individual
Original Assignee
Individual
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
Priority claimed from US05/778,615 external-priority patent/US4130759A/en
Application filed by Individual filed Critical Individual
Publication of FR2384415A1 publication Critical patent/FR2384415A1/en
Application granted granted Critical
Publication of FR2384415B3 publication Critical patent/FR2384415B3/fr
Granted legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/02—Arrangements for diagnosis sequentially in different planes; Stereoscopic radiation diagnosis
    • A61B6/03—Computed tomography [CT]
    • A61B6/032—Transmission computed tomography [CT]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J35/00—X-ray tubes
    • H01J35/02—Details
    • H01J35/14—Arrangements for concentrating, focusing, or directing the cathode ray
    • H01J35/147—Spot size control
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/40—Arrangements for generating radiation specially adapted for radiation diagnosis
    • A61B6/4021—Arrangements for generating radiation specially adapted for radiation diagnosis involving movement of the focal spot
    • A61B6/4028—Arrangements for generating radiation specially adapted for radiation diagnosis involving movement of the focal spot resulting in acquisition of views from substantially different positions, e.g. EBCT
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
    • A61B6/44—Constructional features of apparatus for radiation diagnosis
    • A61B6/4488—Means for cooling
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21K—TECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
    • G21K1/00—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating
    • G21K1/02—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating using diaphragms, collimators
    • G21K1/025—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating using diaphragms, collimators using multiple collimators, e.g. Bucky screens; other devices for eliminating undesired or dispersed radiation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J35/00—X-ray tubes
    • H01J35/24—Tubes wherein the point of impact of the cathode ray on the anode or anticathode is movable relative to the surface thereof
    • H01J35/30—Tubes wherein the point of impact of the cathode ray on the anode or anticathode is movable relative to the surface thereof by deflection of the cathode ray

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Medical Informatics (AREA)
  • Physics & Mathematics (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • Optics & Photonics (AREA)
  • Pathology (AREA)
  • Radiology & Medical Imaging (AREA)
  • Biomedical Technology (AREA)
  • Biophysics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • General Engineering & Computer Science (AREA)
  • Pulmonology (AREA)
  • Theoretical Computer Science (AREA)
  • X-Ray Techniques (AREA)
  • Apparatus For Radiation Diagnosis (AREA)

Abstract

A method of generating high-intensity X-rays and directing them on to an object from a stationary annular target surrounding the object consists of generating a high-power electron beam along a longitudinal axis (Z-Z) parallel to the axis of the annulus; this electron beam is selectively directed onto preselected points around a target by means of selectively activated electro-magnetic elements; on striking these points of the annular target, X-rays are generated and are directed towards the object. Selected aberrations which are imposed upon the beam by orienting or directing elements are corrected. For use in conjunction with a computer-tomography sensing system. The appts. possesses no moving parts; the limitations resulting from space-charge forces and field aberrations are reduced to a minimum. The beam can be deflected over long distances and directed onto a target with accurate results.
FR7807665A 1977-03-17 1978-03-16 X=Rays directed from ring of targets onto object - by moving electron beam directed onto targets without moving parts Granted FR2384415A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US05/778,615 US4130759A (en) 1977-03-17 1977-03-17 Method and apparatus incorporating no moving parts, for producing and selectively directing x-rays to different points on an object
US87403178A 1978-01-31 1978-01-31

Publications (2)

Publication Number Publication Date
FR2384415A1 true FR2384415A1 (en) 1978-10-13
FR2384415B3 FR2384415B3 (en) 1980-10-31

Family

ID=27119476

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7807665A Granted FR2384415A1 (en) 1977-03-17 1978-03-16 X=Rays directed from ring of targets onto object - by moving electron beam directed onto targets without moving parts

Country Status (1)

Country Link
FR (1) FR2384415A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984000079A1 (en) * 1982-06-17 1984-01-05 Thor Cryogenics Ltd X-ray source apparatus
EP0144272A1 (en) * 1983-12-06 1985-06-12 Thomson-Cgr X-ray diagnostic apparatus for stereoscopic or conventional examinations
EP0456114A2 (en) * 1990-04-30 1991-11-13 Shimadzu Corporation X-ray tube for CT apparatus

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1984000079A1 (en) * 1982-06-17 1984-01-05 Thor Cryogenics Ltd X-ray source apparatus
US4713833A (en) * 1982-06-17 1987-12-15 Kevex Corporation X-ray source apparatus
EP0144272A1 (en) * 1983-12-06 1985-06-12 Thomson-Cgr X-ray diagnostic apparatus for stereoscopic or conventional examinations
EP0456114A2 (en) * 1990-04-30 1991-11-13 Shimadzu Corporation X-ray tube for CT apparatus
EP0456114A3 (en) * 1990-04-30 1991-11-21 Shimadzu Corporation X-ray tube for ct apparatus
US5179583A (en) * 1990-04-30 1993-01-12 Shimadzu Corporation X-ray tube for ct apparatus

Also Published As

Publication number Publication date
FR2384415B3 (en) 1980-10-31

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