NL8000354A - Inrichting voor het verkrijgen van een tomograaf onder gebruikmaking van een waaierbundel. - Google Patents
Inrichting voor het verkrijgen van een tomograaf onder gebruikmaking van een waaierbundel. Download PDFInfo
- Publication number
- NL8000354A NL8000354A NL8000354A NL8000354A NL8000354A NL 8000354 A NL8000354 A NL 8000354A NL 8000354 A NL8000354 A NL 8000354A NL 8000354 A NL8000354 A NL 8000354A NL 8000354 A NL8000354 A NL 8000354A
- Authority
- NL
- Netherlands
- Prior art keywords
- data
- fan beam
- routine
- ray
- function
- Prior art date
Links
- 238000010521 absorption reaction Methods 0.000 claims description 36
- 230000005855 radiation Effects 0.000 claims description 21
- 238000001514 detection method Methods 0.000 claims description 10
- 238000012545 processing Methods 0.000 claims description 2
- 230000006870 function Effects 0.000 description 48
- 238000002591 computed tomography Methods 0.000 description 13
- 238000005070 sampling Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 239000011159 matrix material Substances 0.000 description 5
- 238000011161 development Methods 0.000 description 4
- 238000004364 calculation method Methods 0.000 description 3
- 238000012937 correction Methods 0.000 description 3
- 230000008707 rearrangement Effects 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- 244000089409 Erythrina poeppigiana Species 0.000 description 1
- 235000009776 Rathbunia alamosensis Nutrition 0.000 description 1
- 238000005315 distribution function Methods 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 229910052704 radon Inorganic materials 0.000 description 1
- SYUHGPGVQRZVTB-UHFFFAOYSA-N radon atom Chemical compound [Rn] SYUHGPGVQRZVTB-UHFFFAOYSA-N 0.000 description 1
- 238000012360 testing method Methods 0.000 description 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
- G06T11/006—Inverse problem, transformation from projection-space into object-space, e.g. transform methods, back-projection, algebraic methods
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2211/00—Image generation
- G06T2211/40—Computed tomography
- G06T2211/421—Filtered back projection [FBP]
-
- 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)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Theoretical Computer Science (AREA)
- Medical Informatics (AREA)
- General Physics & Mathematics (AREA)
- Pure & Applied Mathematics (AREA)
- Radiology & Medical Imaging (AREA)
- Mathematical Optimization (AREA)
- Pulmonology (AREA)
- Mathematical Analysis (AREA)
- Biophysics (AREA)
- High Energy & Nuclear Physics (AREA)
- Algebra (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Optics & Photonics (AREA)
- Pathology (AREA)
- Mathematical Physics (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Apparatus For Radiation Diagnosis (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
- Image Processing (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP476079A JPS5599240A (en) | 1979-01-22 | 1979-01-22 | Ct scanner |
JP476079 | 1979-01-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
NL8000354A true NL8000354A (nl) | 1980-07-24 |
Family
ID=11592838
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL8000354A NL8000354A (nl) | 1979-01-22 | 1980-01-19 | Inrichting voor het verkrijgen van een tomograaf onder gebruikmaking van een waaierbundel. |
Country Status (6)
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4412289A (en) * | 1980-02-13 | 1983-10-25 | The President Of Tokyo Institute Of Technology | Reconstruction method of X-ray computed tomography |
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 |
FR2527339A1 (fr) * | 1982-05-21 | 1983-11-25 | Schlumberger Etienne | Procede et installation pour analyser des discontinuites situees dans un milieu sensiblement homogene |
US4570224A (en) * | 1982-11-29 | 1986-02-11 | Elscint, Inc. | Combining rebinned and unrebinned parallel ray data with unequal lateral spacing to create tomograph images |
US4581581A (en) * | 1983-06-30 | 1986-04-08 | General Electric Company | Method of projection reconstruction imaging with reduced sensitivity to motion-related artifacts |
US4578753A (en) * | 1983-08-29 | 1986-03-25 | Elscint Ltd. | Systems and methods for minimizing noncoplanarity artifacts |
DE4235183C2 (de) * | 1992-10-19 | 1997-10-23 | Fraunhofer Ges Forschung | Verfahren zur Erzeugung von Schichtaufnahmen von einem Meßobjekt mittels Röntgenstrahlung |
US5396890A (en) * | 1993-09-30 | 1995-03-14 | Siemens Medical Systems, Inc. | Three-dimensional scan converter for ultrasound imaging |
US5838756A (en) * | 1996-01-08 | 1998-11-17 | Kabushiki Kaisha Toshiba | Radiation computed tomography apparatus |
US8218720B2 (en) * | 2007-03-12 | 2012-07-10 | Varian Medical Systems, Inc. | Method and apparatus to facilitate reconstructing an image using fan-beam data |
JP6370280B2 (ja) * | 2015-09-16 | 2018-08-08 | 富士フイルム株式会社 | 断層画像生成装置、方法およびプログラム |
CN105590331B (zh) * | 2015-12-11 | 2018-09-18 | 沈阳东软医疗系统有限公司 | Ct扫描数据的背景校正方法及装置 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1531229A (en) * | 1974-12-19 | 1978-11-08 | Emi Ltd | Radiography |
DE2511231A1 (de) * | 1975-03-14 | 1976-09-23 | Philips Patentverwaltung | Anordnung zur ermittlung der absorption einer strahlung in einer ebene eines koerpers |
DE2521796C3 (de) * | 1975-05-16 | 1979-12-13 | Philips Patentverwaltung Gmbh, 2000 Hamburg | Anordnung zur Ermittlung der räumlichen Verteilung der Absorption oder der Emission von Strahlung in einer Ebene eines Körpers |
GB1594751A (en) * | 1977-01-31 | 1981-08-05 | Tokyo Shibaura Electric Co | Method and apparatus for tomography by means of penetrating radiation |
JPS5394787A (en) * | 1977-01-31 | 1978-08-19 | Toshiba Corp | Tomographic diagnostic equipment by radiation |
JPS5438789A (en) * | 1977-09-02 | 1979-03-23 | Hitachi Medical Corp | Tomography |
GB1602072A (en) * | 1978-05-12 | 1981-11-04 | Emi Ltd | Processing arrangements for constructing representations of parts of bodies |
-
1979
- 1979-01-22 JP JP476079A patent/JPS5599240A/ja active Pending
-
1980
- 1980-01-16 US US06/112,453 patent/US4313163A/en not_active Expired - Lifetime
- 1980-01-19 NL NL8000354A patent/NL8000354A/nl not_active Application Discontinuation
- 1980-01-22 FR FR8001331A patent/FR2446626A1/fr active Granted
- 1980-01-22 DE DE19803002187 patent/DE3002187A1/de not_active Ceased
- 1980-01-22 GB GB8002032A patent/GB2042847B/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR2446626A1 (fr) | 1980-08-14 |
US4313163A (en) | 1982-01-26 |
JPS5599240A (en) | 1980-07-29 |
GB2042847B (en) | 1983-05-05 |
FR2446626B1 (US20020051482A1-20020502-M00012.png) | 1985-05-17 |
GB2042847A (en) | 1980-09-24 |
DE3002187A1 (de) | 1980-07-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
A1A | A request for search or an international-type search has been filed | ||
BB | A search report has been drawn up | ||
BC | A request for examination has been filed | ||
A85 | Still pending on 85-01-01 | ||
BV | The patent application has lapsed |