FR2398487A1 - Appareil radiologique pour tomographie axiale transverse - Google Patents
Appareil radiologique pour tomographie axiale transverseInfo
- Publication number
- FR2398487A1 FR2398487A1 FR7723445A FR7723445A FR2398487A1 FR 2398487 A1 FR2398487 A1 FR 2398487A1 FR 7723445 A FR7723445 A FR 7723445A FR 7723445 A FR7723445 A FR 7723445A FR 2398487 A1 FR2398487 A1 FR 2398487A1
- Authority
- FR
- France
- Prior art keywords
- axial tomography
- transverse axial
- transverse
- movable
- tomography
- 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.)
- Withdrawn
Links
- 238000003325 tomography Methods 0.000 title abstract 3
- 238000010017 direct printing Methods 0.000 abstract 1
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]
-
- 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
- A61B6/06—Diaphragms
-
- 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
- G21K1/04—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating using diaphragms, collimators using variable diaphragms, shutters, choppers
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)
- Pulmonology (AREA)
- Theoretical Computer Science (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Engineering & Computer Science (AREA)
- Apparatus For Radiation Diagnosis (AREA)
Abstract
L'invention concerne un appareil radiologique pour tomographie axiale transverse par impression directe d'une pellicule photographique. Un localisateur, constitué principalement par un tube cylindrique doublé de plomb, est fixé au levier oscillant à proximité de la source. Il contient notamment un jeu de filtres mobiles et des volets opaques mobiles, mus tous deux par des moyens moteurs en liaison avec les mouvements du levier oscillant, de manière que l'essentiel du faisceau ne vienne jamais frapper directement le porte-cassette, et que les rayons situés en bordure du faisceau soient moins puissants que ceux situés dans la région centrale. Appareil de tomographie transverse d'utilisation générale.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7723445A FR2398487A1 (fr) | 1977-07-29 | 1977-07-29 | Appareil radiologique pour tomographie axiale transverse |
DE19782832271 DE2832271A1 (de) | 1977-07-29 | 1978-07-22 | Roentgendiagnostikeinrichtung fuer die herstellung von transversal-schichtbildern |
US05/928,217 US4219734A (en) | 1977-07-29 | 1978-07-26 | X-ray apparatus for transverse axial tomography |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7723445A FR2398487A1 (fr) | 1977-07-29 | 1977-07-29 | Appareil radiologique pour tomographie axiale transverse |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2398487A1 true FR2398487A1 (fr) | 1979-02-23 |
Family
ID=9194023
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7723445A Withdrawn FR2398487A1 (fr) | 1977-07-29 | 1977-07-29 | Appareil radiologique pour tomographie axiale transverse |
Country Status (3)
Country | Link |
---|---|
US (1) | US4219734A (fr) |
DE (1) | DE2832271A1 (fr) |
FR (1) | FR2398487A1 (fr) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2479636A1 (fr) * | 1980-03-27 | 1981-10-02 | Siemens Ag | Installation de radiodiagnostic comportant un circuit de reglage du debit de dose |
FR2517954A1 (fr) * | 1981-12-15 | 1983-06-17 | Siemens Ag | Installation de radiodiagnostic dentaire |
EP0290165A1 (fr) * | 1987-05-07 | 1988-11-09 | Picker International, Inc. | Appareil de radiographie |
US4905268A (en) * | 1985-10-25 | 1990-02-27 | Picker International, Inc. | Adjustable off-focal aperture for x-ray tubes |
FR2657771A1 (fr) * | 1990-02-08 | 1991-08-09 | Gen Electric Cgr | Appareil de radiologie avec diaphragme a ouverture automatique. |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5867553A (en) * | 1995-11-02 | 1999-02-02 | Analogic Corporation | Computed tomography scanner with reduced power x-ray source |
FR2770677B1 (fr) * | 1997-11-03 | 1999-12-24 | Ge Medical Syst Sa | Filtre de conformation de faisceau de rayon-x a surface variable et appareil d'imagerie pour rayon-x incorporant un tel filtre |
FR2859868B1 (fr) * | 2003-09-12 | 2016-02-12 | Ge Med Sys Global Tech Co Llc | Installation a rayons x |
US7310410B2 (en) * | 2004-07-28 | 2007-12-18 | General Electric Co. | Single-leaf X-ray collimator |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2667588A (en) * | 1951-03-10 | 1954-01-26 | Hartford Nat Bank & Trust Co | Beam-limiting diaphragm for x-ray tubes |
US3091696A (en) * | 1960-05-17 | 1963-05-28 | Howdon Videx Products Corp | Collimator |
US3829701A (en) * | 1973-01-29 | 1974-08-13 | Picker Corp | Radiation collimator |
DE2633059C3 (de) * | 1976-07-22 | 1979-10-18 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Röntgen-Primärstrahlenblende |
-
1977
- 1977-07-29 FR FR7723445A patent/FR2398487A1/fr not_active Withdrawn
-
1978
- 1978-07-22 DE DE19782832271 patent/DE2832271A1/de not_active Withdrawn
- 1978-07-26 US US05/928,217 patent/US4219734A/en not_active Expired - Lifetime
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2479636A1 (fr) * | 1980-03-27 | 1981-10-02 | Siemens Ag | Installation de radiodiagnostic comportant un circuit de reglage du debit de dose |
FR2517954A1 (fr) * | 1981-12-15 | 1983-06-17 | Siemens Ag | Installation de radiodiagnostic dentaire |
US4905268A (en) * | 1985-10-25 | 1990-02-27 | Picker International, Inc. | Adjustable off-focal aperture for x-ray tubes |
EP0290165A1 (fr) * | 1987-05-07 | 1988-11-09 | Picker International, Inc. | Appareil de radiographie |
FR2657771A1 (fr) * | 1990-02-08 | 1991-08-09 | Gen Electric Cgr | Appareil de radiologie avec diaphragme a ouverture automatique. |
Also Published As
Publication number | Publication date |
---|---|
US4219734A (en) | 1980-08-26 |
DE2832271A1 (de) | 1979-02-08 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |