CH625953A5 - - Google Patents
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- Publication number
- CH625953A5 CH625953A5 CH1053777A CH1053777A CH625953A5 CH 625953 A5 CH625953 A5 CH 625953A5 CH 1053777 A CH1053777 A CH 1053777A CH 1053777 A CH1053777 A CH 1053777A CH 625953 A5 CH625953 A5 CH 625953A5
- Authority
- CH
- Switzerland
- Prior art keywords
- window
- deconvolution
- image
- optical system
- mask
- Prior art date
Links
- 230000006870 function Effects 0.000 claims description 44
- 230000003287 optical effect Effects 0.000 claims description 25
- 230000005855 radiation Effects 0.000 claims description 22
- 238000003860 storage Methods 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 claims description 10
- 238000010521 absorption reaction Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 239000000835 fiber Substances 0.000 claims description 2
- 230000035699 permeability Effects 0.000 claims 2
- 239000003086 colorant Substances 0.000 claims 1
- 238000003384 imaging method Methods 0.000 claims 1
- 238000013507 mapping Methods 0.000 claims 1
- 238000003325 tomography Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000002591 computed tomography Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- 230000000295 complement effect Effects 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000010587 phase diagram Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation 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
-
- 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
-
- 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
- A61B6/52—Devices using data or image processing specially adapted for radiation diagnosis
- A61B6/5205—Devices using data or image processing specially adapted for radiation diagnosis involving processing of raw data to produce diagnostic data
-
- 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)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Medical Informatics (AREA)
- General Physics & Mathematics (AREA)
- Pathology (AREA)
- Molecular Biology (AREA)
- Biophysics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Optics & Photonics (AREA)
- Pulmonology (AREA)
- Radiology & Medical Imaging (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- High Energy & Nuclear Physics (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Apparatus For Radiation Diagnosis (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Image Analysis (AREA)
- Analysing Materials By The Use Of Radiation (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL7609963A NL7609963A (nl) | 1976-09-08 | 1976-09-08 | Signaalverwerkend stelsel. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH625953A5 true CH625953A5 ( ) | 1981-10-30 |
Family
ID=19826857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH1053777A CH625953A5 ( ) | 1976-09-08 | 1977-08-30 |
Country Status (11)
| Country | Link |
|---|---|
| US (1) | US4200931A ( ) |
| JP (1) | JPS5334488A ( ) |
| CA (1) | CA1087759A ( ) |
| CH (1) | CH625953A5 ( ) |
| DE (1) | DE2738954C2 ( ) |
| FR (1) | FR2364020A1 ( ) |
| GB (1) | GB1583054A ( ) |
| IL (1) | IL52900A ( ) |
| IT (1) | IT1084744B ( ) |
| NL (1) | NL7609963A ( ) |
| SE (1) | SE7710047L ( ) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL7804881A (nl) * | 1978-05-05 | 1979-11-07 | Optische Ind De Oude Delft Nv | Werkwijze en inrichting voor het elektro-optisch convo- lueren van een eendimensionaal signaal. |
| EP0047780A1 (en) * | 1980-03-21 | 1982-03-24 | University Patents, Inc. | Transverse tomography with optical filtering |
| US4331877A (en) * | 1980-03-21 | 1982-05-25 | University Patents, Inc. | Transverse tomography with optical filtering |
| US8476574B1 (en) | 2011-03-31 | 2013-07-02 | Mutoh Industries Ltd. | Method of deconvolution of spectral data |
| CN105433973B (zh) * | 2015-12-30 | 2018-09-18 | 沈阳东软医疗系统有限公司 | Ct扫描设备、ct系统和控制过滤器组件的方法及装置 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3809873A (en) * | 1971-06-28 | 1974-05-07 | C Klahr | Optical processor for convolution filtering |
| GB1478123A (en) * | 1973-08-18 | 1977-06-29 | Emi Ltd | Tomography |
| US4066902A (en) * | 1974-03-23 | 1978-01-03 | Emi Limited | Radiography with detector compensating means |
| NL7605254A (nl) | 1976-05-17 | 1977-11-21 | Optische Ind De Oude Delft Nv | Beeldconstructie. |
| US4075483A (en) * | 1976-07-12 | 1978-02-21 | Raytheon Company | Multiple masking imaging system |
| US4068306A (en) * | 1976-07-12 | 1978-01-10 | General Electric Co. | X-ray data acquisition system and method for calibration |
-
1976
- 1976-09-08 NL NL7609963A patent/NL7609963A/xx not_active Application Discontinuation
-
1977
- 1977-08-30 CH CH1053777A patent/CH625953A5/de not_active IP Right Cessation
- 1977-08-30 US US05/829,055 patent/US4200931A/en not_active Expired - Lifetime
- 1977-08-30 DE DE2738954A patent/DE2738954C2/de not_active Expired
- 1977-08-31 CA CA285,910A patent/CA1087759A/en not_active Expired
- 1977-09-02 GB GB36746/77A patent/GB1583054A/en not_active Expired
- 1977-09-06 IL IL52900A patent/IL52900A/xx unknown
- 1977-09-07 SE SE7710047A patent/SE7710047L/xx unknown
- 1977-09-08 FR FR7727248A patent/FR2364020A1/fr active Granted
- 1977-09-08 IT IT27386/77A patent/IT1084744B/it active
- 1977-09-08 JP JP10732777A patent/JPS5334488A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| FR2364020A1 (fr) | 1978-04-07 |
| DE2738954A1 (de) | 1978-03-09 |
| SE7710047L (sv) | 1978-03-09 |
| IT1084744B (it) | 1985-05-28 |
| US4200931A (en) | 1980-04-29 |
| GB1583054A (en) | 1981-01-21 |
| NL7609963A (nl) | 1978-03-10 |
| IL52900A0 (en) | 1977-11-30 |
| DE2738954C2 (de) | 1985-02-28 |
| IL52900A (en) | 1980-03-31 |
| CA1087759A (en) | 1980-10-14 |
| JPS5334488A (en) | 1978-03-31 |
| FR2364020B3 ( ) | 1980-06-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PL | Patent ceased |