IL116573A - אלגוריתם מובל לאיתור טבעות עבור שיחזור תמונות - Google Patents
אלגוריתם מובל לאיתור טבעות עבור שיחזור תמונותInfo
- Publication number
- IL116573A IL116573A IL11657395A IL11657395A IL116573A IL 116573 A IL116573 A IL 116573A IL 11657395 A IL11657395 A IL 11657395A IL 11657395 A IL11657395 A IL 11657395A IL 116573 A IL116573 A IL 116573A
- Authority
- IL
- Israel
- Prior art keywords
- detector
- vector
- accordance
- degradation
- cell
- Prior art date
Links
- 239000013598 vector Substances 0.000 claims description 53
- 230000015556 catabolic process Effects 0.000 claims description 39
- 238000006731 degradation reaction Methods 0.000 claims description 39
- 238000000034 method Methods 0.000 claims description 19
- 238000012937 correction Methods 0.000 claims description 13
- 238000001914 filtration Methods 0.000 claims description 7
- 238000012545 processing Methods 0.000 claims description 6
- 238000013507 mapping Methods 0.000 claims description 3
- 230000000873 masking effect Effects 0.000 claims description 3
- 210000004027 cell Anatomy 0.000 claims 18
- 210000003888 boundary cell Anatomy 0.000 claims 2
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 238000002591 computed tomography Methods 0.000 description 9
- 238000001514 detection method Methods 0.000 description 4
- 238000003384 imaging method Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000004907 flux Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 238000013170 computed tomography imaging Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 240000003380 Passiflora rubra Species 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000003491 array Methods 0.000 description 1
- 210000000007 bat wing Anatomy 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000010606 normalization Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
- G01N23/04—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material
- G01N23/046—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material using tomography, e.g. computed tomography [CT]
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2223/00—Investigating materials by wave or particle radiation
- G01N2223/40—Imaging
- G01N2223/419—Imaging computed tomograph
-
- 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
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Pulmonology (AREA)
- Radiology & Medical Imaging (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Apparatus For Radiation Diagnosis (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US08/373,410 US5533081A (en) | 1995-01-17 | 1995-01-17 | Guided ringfix algorithm for image reconstruction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| IL116573A0 IL116573A0 (en) | 1996-03-31 |
| IL116573A true IL116573A (he) | 1998-08-16 |
Family
ID=23472290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| IL11657395A IL116573A (he) | 1995-01-17 | 1995-12-26 | אלגוריתם מובל לאיתור טבעות עבור שיחזור תמונות |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US5533081A (he) |
| JP (1) | JPH08252249A (he) |
| DE (1) | DE19546378A1 (he) |
| IL (1) | IL116573A (he) |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19990087775A (ko) * | 1996-03-13 | 1999-12-27 | 토비 에취. 쿠스머 | 컴퓨터 단층촬영 링 억제필터 |
| JPH11511376A (ja) * | 1996-03-13 | 1999-10-05 | アナロジック コーポレーション | コンピュータ・トモグラフィの自己校正リング抑制フィルタ |
| DE69717780T2 (de) * | 1996-07-30 | 2003-07-17 | Koninklijke Philips Electronics N.V., Eindhoven | Korrektur von ringförmigen bildartefakten |
| IL119283A0 (en) * | 1996-09-19 | 1996-12-05 | Elscint Ltd | Adaptive filtering |
| DE19835451B4 (de) * | 1997-08-20 | 2005-03-24 | Siemens Ag | Verfahren für einen Computertomographen zur Nachverarbeitung eines Schnittbildes und nach diesem Verfahren arbeitender Computertomograph |
| US6134292A (en) * | 1998-07-13 | 2000-10-17 | General Electric Company | Methods and apparatus for reducing z-axis non-uniformity artifacts |
| US6327329B1 (en) * | 1998-08-25 | 2001-12-04 | General Electric Company | Methods and apparatus for monitoring detector image quality |
| JP2001095793A (ja) * | 1999-10-04 | 2001-04-10 | Hitachi Medical Corp | Ｘ線ｃｔ装置 |
| JP2005176988A (ja) * | 2003-12-17 | 2005-07-07 | Ge Medical Systems Global Technology Co Llc | データ補正方法およびｘ線ｃｔ装置 |
| US7860341B2 (en) * | 2006-07-21 | 2010-12-28 | Varian Medical Systems, Inc. | System and method for correcting for ring artifacts in an image |
| US7929659B2 (en) * | 2008-07-24 | 2011-04-19 | General Electric Company | System and method for generating computed tomography images |
| US8929507B2 (en) * | 2011-10-19 | 2015-01-06 | Kabushiki Kaisha Toshiba | Method and system for substantially reducing ring artifact based upon ring statistics |
| JP6201229B2 (ja) * | 2013-03-29 | 2017-09-27 | 朝日レントゲン工業株式会社 | 画像再構成装置、画像再構成方法、及びｘ線撮影装置 |
| EP3087376B1 (en) * | 2013-12-23 | 2020-02-05 | Johnson Matthey Public Limited Company | Scanning method |
| CN120941702B (zh) * | 2025-10-16 | 2025-12-16 | 南通瑞童塑业科技有限公司 | 一种用于风电机组塑料叶片生产用的吹塑检测方法及系统 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1493593A (en) * | 1974-01-31 | 1977-11-30 | Emi Ltd | Radiography |
| US4670840A (en) * | 1983-03-09 | 1987-06-02 | Elscint, Inc. | Ring artifact correction for computerized tomography |
| US5301108A (en) * | 1993-02-01 | 1994-04-05 | General Electric Company | Computed tomography system with z-axis correction |
| US5473656A (en) * | 1994-09-15 | 1995-12-05 | General Electric Company | Computed tomography system with correction for z-axis detector non-uniformity |
-
1995
- 1995-01-17 US US08/373,410 patent/US5533081A/en not_active Expired - Fee Related
- 1995-12-12 DE DE19546378A patent/DE19546378A1/de not_active Withdrawn
- 1995-12-26 IL IL11657395A patent/IL116573A/he not_active IP Right Cessation
-
1996
- 1996-01-08 JP JP8000653A patent/JPH08252249A/ja not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08252249A (ja) | 1996-10-01 |
| IL116573A0 (en) | 1996-03-31 |
| DE19546378A1 (de) | 1996-07-18 |
| US5533081A (en) | 1996-07-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1048008B1 (en) | Methods and apparatus for calcification scoring | |
| US6115487A (en) | Correction algorithm for bone-induced spectral artifacts in computed tomograph imaging | |
| US6366638B1 (en) | Methods and apparatus for CT scout image processing | |
| US6493416B1 (en) | Method and apparatus for noise reduction in computed tomographic systems | |
| US6421411B1 (en) | Methods and apparatus for helical image artifact reduction | |
| US6035012A (en) | Artifact correction for highly attenuating objects | |
| US6226350B1 (en) | Methods and apparatus for cardiac scoring with a multi-beam scanner | |
| US6266388B1 (en) | Methods and apparatus for two-pass cone beam image reconstruction | |
| US5727041A (en) | Methods and apparatus for reducing partial volume image artifacts | |
| US5818896A (en) | Methods and apparatus for three-dimensional and maximum intensity projection image reconstruction in a computed tomography system | |
| US5533081A (en) | Guided ringfix algorithm for image reconstruction | |
| US8284893B2 (en) | X-ray computer tomography apparatus and image processing apparatus | |
| US5812628A (en) | Methods and apparatus for detecting partial volume image artifacts | |
| US5761257A (en) | Normalizing projection data in a computed tomography system | |
| US7747057B2 (en) | Methods and apparatus for BIS correction | |
| CA2010135A1 (en) | Compensation of computed tomography data for objects positioned outside the field of view of the reconstructed image | |
| US5974110A (en) | Helical reconstruction algorithm | |
| IL119543A (en) | Methods and apparatus for reducing image artifacts | |
| US6600802B1 (en) | Image space correction for multi-slice helical reconstruction with z-smoothing | |
| US6411671B2 (en) | Method for reducing line artifacts in a CT image and device for implementing the method | |
| JP3484288B2 (ja) | Ｘ線断層撮影装置 | |
| US6798860B1 (en) | Methods and apparatus for deconvolving imaging data | |
| US6278762B1 (en) | Systems, methods and apparatus for reconstructing images | |
| US6647084B1 (en) | Method and apparatus for filtering projection data of a helical scan | |
| US6009140A (en) | Stair-case suppression for computed tomograph imaging |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FF | Patent granted | ||
| KB | Patent renewed | ||
| MM9K | Patent not in force due to non-payment of renewal fees |