FR2401463A1 - Procede pour la mesure et le traitement de resultats de mesure dans des appareils de tomographie transversale equipes d'une calculatrice et appareil de tomographie pour sa mise en oeuvre - Google Patents
Procede pour la mesure et le traitement de resultats de mesure dans des appareils de tomographie transversale equipes d'une calculatrice et appareil de tomographie pour sa mise en oeuvreInfo
- Publication number
- FR2401463A1 FR2401463A1 FR7824392A FR7824392A FR2401463A1 FR 2401463 A1 FR2401463 A1 FR 2401463A1 FR 7824392 A FR7824392 A FR 7824392A FR 7824392 A FR7824392 A FR 7824392A FR 2401463 A1 FR2401463 A1 FR 2401463A1
- Authority
- FR
- France
- Prior art keywords
- measurement
- tomography
- measurement results
- implementation
- computer
- 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- Withdrawn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
- 238000005259 measurement Methods 0.000 title abstract 3
- 238000003325 tomography Methods 0.000 title abstract 3
- 238000000034 method Methods 0.000 title 1
- 230000005855 radiation Effects 0.000 abstract 2
- 230000005540 biological transmission Effects 0.000 abstract 1
- 238000005070 sampling 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]
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T11/00—2D [Two Dimensional] image generation
- G06T11/003—Reconstruction from projections, e.g. tomography
- G06T11/005—Specific pre-processing for tomographic reconstruction, e.g. calibration, source positioning, rebinning, scatter correction, retrospective gating
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S378/00—X-ray or gamma ray systems or devices
- Y10S378/901—Computer tomography program or processor
Landscapes
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Medical Informatics (AREA)
- Pathology (AREA)
- Heart & Thoracic Surgery (AREA)
- High Energy & Nuclear Physics (AREA)
- Pulmonology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Radiology & Medical Imaging (AREA)
- Biomedical Technology (AREA)
- Biophysics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
- Apparatus For Radiation Diagnosis (AREA)
- Medical Treatment And Welfare Office Work (AREA)
Abstract
La source de rayonnement et les détecteurs d'un appareil de tomographie transversale opérant à l'aide d'une calculatrice effectuent un mouvement de translation et un mouvement de rotation à vitesses variables. Des données de transmission de rayonnement sont mesurées et échantillonnées, les instants d'échantillonnage étant séparés par des intervalles de temps identiques. Les résultats de mesure sont ensuite interpolés et filtrés à l'aide d'une approximation polynomiale de rang élevé dans le but d'obtenir des signaux d'information pour un algorithme de reconstruction d'image qui est basé sur les signaux d'information engendrés sur des points physiques équidistants. Application à l'appareillage tomographique.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/827,932 US4136388A (en) | 1977-08-26 | 1977-08-26 | Data acquisition system for computed tomography |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2401463A1 true FR2401463A1 (fr) | 1979-03-23 |
Family
ID=25250508
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7824392A Withdrawn FR2401463A1 (fr) | 1977-08-26 | 1978-08-22 | Procede pour la mesure et le traitement de resultats de mesure dans des appareils de tomographie transversale equipes d'une calculatrice et appareil de tomographie pour sa mise en oeuvre |
Country Status (10)
Country | Link |
---|---|
US (1) | US4136388A (fr) |
JP (1) | JPS5447494A (fr) |
BE (1) | BE869952A (fr) |
CA (1) | CA1119317A (fr) |
DE (1) | DE2836577A1 (fr) |
FR (1) | FR2401463A1 (fr) |
GB (1) | GB2003361B (fr) |
IL (1) | IL55419A (fr) |
NL (1) | NL7808636A (fr) |
SE (1) | SE7808880L (fr) |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5458393A (en) * | 1977-10-19 | 1979-05-11 | Hitachi Medical Corp | Radiant ray revolving sectional layer device |
DE2753260A1 (de) * | 1977-11-30 | 1979-05-31 | Philips Patentverwaltung | Verfahren zur ermittlung der raeumlichen verteilung der absorption einer strahlung |
JPS5481095A (en) * | 1977-12-12 | 1979-06-28 | Toshiba Corp | Computer tomography device |
US4305127A (en) * | 1979-11-29 | 1981-12-08 | Technicare Corporation | Projection completion method of partial area scan |
US4493039A (en) * | 1980-05-06 | 1985-01-08 | President And Directors Of Georgetown University | Apparatus and method for image reproduction of materials using their magnetic and electric properties |
EP0041084A1 (fr) * | 1980-05-30 | 1981-12-09 | DMX Associates | Méthode et appareil d'exploration par rayonnement |
JPS58118735A (ja) * | 1982-01-06 | 1983-07-14 | 株式会社東芝 | コンピユ−タ断層撮影装置 |
FR2525103B1 (fr) * | 1982-04-14 | 1985-09-27 | Duret Francois | Dispositif de prise d'empreinte par des moyens optiques, notamment en vue de la realisation automatique de protheses |
JPS59168839A (ja) * | 1983-03-17 | 1984-09-22 | 横河メディカルシステム株式会社 | 計算機トモグラフイ装置 |
JPS59181136A (ja) * | 1983-03-17 | 1984-10-15 | シーメンス・アクチェンゲゼルシャフト | 断層撮影システム |
US4636955A (en) * | 1984-05-01 | 1987-01-13 | Mobil Oil Corporation | Method for establishing continuity between contiguous data sets |
US4712178A (en) * | 1984-11-28 | 1987-12-08 | Picker International Inc. | Malfunctioning computed tomography detector correction method |
US4752879A (en) * | 1985-01-30 | 1988-06-21 | Picker International, Inc. | Method and apparatus for medical imaging |
JP2588185B2 (ja) * | 1987-02-24 | 1997-03-05 | 株式会社東芝 | 超音波診断装置 |
JP2508078B2 (ja) * | 1987-04-30 | 1996-06-19 | 株式会社島津製作所 | X線画像処理装置 |
US5225980A (en) * | 1991-11-27 | 1993-07-06 | General Electric Company | Reduction of image artifacts from support structures in tomographic imaging |
US6856666B2 (en) * | 2002-10-04 | 2005-02-15 | Ge Medical Systems Global Technology Company, Llc | Multi modality imaging methods and apparatus |
US7254259B2 (en) * | 2002-10-04 | 2007-08-07 | Ge Medical Systems Global Technology Company Llc | Methods and apparatus for truncation compensation |
US6810102B2 (en) | 2002-10-04 | 2004-10-26 | Ge Medical Systems Global Technology Company, Llc | Methods and apparatus for truncation compensation |
US7215734B2 (en) * | 2004-06-30 | 2007-05-08 | General Electric Company | Method and system for three-dimensional reconstruction of images |
US8218720B2 (en) * | 2007-03-12 | 2012-07-10 | Varian Medical Systems, Inc. | Method and apparatus to facilitate reconstructing an image using fan-beam data |
JP6485410B2 (ja) | 2016-06-13 | 2019-03-20 | オムロン株式会社 | X線検査装置およびx線検査方法 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4044240A (en) * | 1975-11-28 | 1977-08-23 | Picker Corporation | Tomography system having an ultra high speed processing unit |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1283915A (en) | 1968-08-23 | 1972-08-02 | Emi Ltd | A method of and apparatus for examination of a body by radiation such as x or gamma radiation |
US3748470A (en) * | 1970-10-02 | 1973-07-24 | Raytheon Co | Imaging system utilizing spatial coding |
SE347859B (fr) * | 1970-11-30 | 1972-08-14 | Medinova Ab | |
GB1493243A (en) * | 1974-02-15 | 1977-11-30 | Emi Ltd | Radiographic apparatus |
US4002911A (en) * | 1974-05-20 | 1977-01-11 | Emi Limited | Data acquisition in tomography |
US4032761A (en) * | 1974-10-11 | 1977-06-28 | E M I Limited | Tomography |
-
1977
- 1977-08-26 US US05/827,932 patent/US4136388A/en not_active Expired - Lifetime
-
1978
- 1978-08-21 DE DE19782836577 patent/DE2836577A1/de active Pending
- 1978-08-22 NL NL7808636A patent/NL7808636A/xx not_active Application Discontinuation
- 1978-08-22 FR FR7824392A patent/FR2401463A1/fr not_active Withdrawn
- 1978-08-23 GB GB7834299A patent/GB2003361B/en not_active Expired
- 1978-08-23 SE SE7808880A patent/SE7808880L/xx unknown
- 1978-08-23 IL IL55419A patent/IL55419A/xx unknown
- 1978-08-24 BE BE190054A patent/BE869952A/fr unknown
- 1978-08-24 CA CA000309999A patent/CA1119317A/fr not_active Expired
- 1978-08-25 JP JP10296478A patent/JPS5447494A/ja active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4044240A (en) * | 1975-11-28 | 1977-08-23 | Picker Corporation | Tomography system having an ultra high speed processing unit |
Also Published As
Publication number | Publication date |
---|---|
GB2003361B (en) | 1982-03-17 |
NL7808636A (nl) | 1979-02-28 |
GB2003361A (en) | 1979-03-07 |
DE2836577A1 (de) | 1979-03-08 |
BE869952A (fr) | 1979-02-26 |
JPS5447494A (en) | 1979-04-14 |
SE7808880L (sv) | 1979-02-27 |
CA1119317A (fr) | 1982-03-02 |
IL55419A (en) | 1980-11-30 |
US4136388A (en) | 1979-01-23 |
IL55419A0 (en) | 1978-10-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |