CN102274040B - Post-processing method for removing ring artifacts in CT (computed tomography) image - Google Patents
Post-processing method for removing ring artifacts in CT (computed tomography) image Download PDFInfo
- Publication number
- CN102274040B CN102274040B CN 201010196570 CN201010196570A CN102274040B CN 102274040 B CN102274040 B CN 102274040B CN 201010196570 CN201010196570 CN 201010196570 CN 201010196570 A CN201010196570 A CN 201010196570A CN 102274040 B CN102274040 B CN 102274040B
- Authority
- CN
- China
- Prior art keywords
- image
- ring
- theta
- polar coordinate
- compression
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 39
- 238000012805 post-processing Methods 0.000 title claims abstract description 24
- 238000002591 computed tomography Methods 0.000 title abstract 7
- 238000012545 processing Methods 0.000 claims abstract description 17
- 230000006835 compression Effects 0.000 claims description 40
- 238000007906 compression Methods 0.000 claims description 40
- 238000005070 sampling Methods 0.000 claims description 19
- 238000006243 chemical reaction Methods 0.000 claims description 18
- 230000000737 periodic effect Effects 0.000 claims description 15
- 239000000284 extract Substances 0.000 claims description 14
- 238000009499 grossing Methods 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 10
- 125000002015 acyclic group Chemical group 0.000 claims description 8
- 230000007480 spreading Effects 0.000 claims description 4
- 230000007704 transition Effects 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 abstract description 9
- 238000005516 engineering process Methods 0.000 abstract description 8
- 230000008859 change Effects 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 5
- 238000005457 optimization Methods 0.000 abstract 1
- 238000002203 pretreatment Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 230000001915 proofreading effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Landscapes
- Apparatus For Radiation Diagnosis (AREA)
- Image Analysis (AREA)
- Image Processing (AREA)
Abstract
Description
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 201010196570 CN102274040B (en) | 2010-06-10 | 2010-06-10 | Post-processing method for removing ring artifacts in CT (computed tomography) image |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 201010196570 CN102274040B (en) | 2010-06-10 | 2010-06-10 | Post-processing method for removing ring artifacts in CT (computed tomography) image |
Publications (2)
Publication Number | Publication Date |
---|---|
CN102274040A CN102274040A (en) | 2011-12-14 |
CN102274040B true CN102274040B (en) | 2012-10-24 |
Family
ID=45100007
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN 201010196570 Active CN102274040B (en) | 2010-06-10 | 2010-06-10 | Post-processing method for removing ring artifacts in CT (computed tomography) image |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN102274040B (en) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104050631B (en) * | 2013-11-25 | 2017-01-11 | 中国科学院上海应用物理研究所 | Low-dose CT image reconstruction method |
CN105321155A (en) * | 2015-10-29 | 2016-02-10 | 北京理工大学 | Ring artifact elimination method for CBCT image |
CN106296763B (en) * | 2016-07-20 | 2019-05-31 | 中国兵器科学研究院宁波分院 | A kind of metal material Industry CT Image Quality method for quickly correcting |
CN106651981B (en) * | 2016-12-07 | 2020-08-25 | 深圳先进技术研究院 | Method and device for correcting ring artifact |
CN107742313B (en) * | 2017-09-26 | 2021-02-09 | 华勤技术股份有限公司 | Data compression method and device applied to vector space |
CN109118555B (en) * | 2018-08-14 | 2019-06-14 | 广州华端科技有限公司 | The metal artifacts reduction method and system of computer tomography |
CN110111318B (en) | 2019-04-30 | 2021-06-29 | 上海联影医疗科技股份有限公司 | Method and system for detecting ring artifact |
CN110264421B (en) * | 2019-06-13 | 2022-07-12 | 明峰医疗***股份有限公司 | CT bad channel correction method |
CN110473218B (en) * | 2019-07-25 | 2022-02-15 | 山东科技大学 | Polar coordinate system gradient change-based quasi-circular ring edge detection method |
CN110889878B (en) * | 2019-11-08 | 2023-06-09 | 湖北科技学院 | CT image ring artifact suppression method combined with image smoothing |
CN111047659B (en) * | 2019-11-08 | 2023-06-30 | 湖北科技学院 | CT ring artifact correction method combined with filtering method |
CN112233027B (en) * | 2020-09-30 | 2022-12-09 | 西北工业大学 | Iterative post-processing removing method for CT image ring artifact |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101178808A (en) * | 2007-11-15 | 2008-05-14 | 南方医科大学 | Method for removing improved conical bind CT ring shaped false shadow |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10322137A1 (en) * | 2003-05-16 | 2004-12-16 | Siemens Ag | X-ray machine with improved efficiency |
US6968032B2 (en) * | 2003-12-18 | 2005-11-22 | Ge Medical Systems Global Technologies Company, Llc | Systems and methods for filtering images |
-
2010
- 2010-06-10 CN CN 201010196570 patent/CN102274040B/en active Active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101178808A (en) * | 2007-11-15 | 2008-05-14 | 南方医科大学 | Method for removing improved conical bind CT ring shaped false shadow |
Non-Patent Citations (2)
Title |
---|
李俊江等.CT图像环状伪影校正方法.《北京航空航天大学学报》.2007,第33卷(第11期),1378-1382. * |
王珏等.工业CT图像环形伪影校正.《光学精密工程》.2010,第18卷(第5期),1226-1233. * |
Also Published As
Publication number | Publication date |
---|---|
CN102274040A (en) | 2011-12-14 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN102274040B (en) | Post-processing method for removing ring artifacts in CT (computed tomography) image | |
CN102697493B (en) | Method for rapidly and automatically identifying and removing ocular artifacts in electroencephalogram signal | |
CN104706349B (en) | Electrocardiosignal construction method based on pulse wave signals | |
RU2013103063A (en) | DYNAMIC CONTRAST IMPROVED MR VISUALIZATION WITH RECONSTRUCTION OF COMPRESSED MEASUREMENT | |
CN104809702B (en) | Diagnosis by feeling the pulse curve image grid removing method based on frequency domain processing | |
Mingliang et al. | Applying empirical mode decomposition (EMD) and entropy to diagnose circuit breaker faults | |
CN109820503A (en) | The synchronous minimizing technology of a variety of artefacts in single channel EEG signals | |
CN104574301A (en) | Terahertz image reconstruction method and system | |
CN103335841A (en) | An antifriction bearing fault diagnosis method employing a pulse wavelet energy spectrum analysis | |
CN104217448A (en) | A magnetic-resonance fast imaging method and system based on iterative feature correction | |
MX358143B (en) | Spiral ct system and reconstruction method. | |
CN104510468A (en) | Character extraction method and device of electroencephalogram | |
CN104463785A (en) | Method and device for amplifying ultrasound image | |
CN105286860A (en) | Motor imagery brain electrical signal recognition method based on dual-tree complex wavelet energy difference | |
GB2596015A (en) | Reconstructing cardiac frequency phenomena in angiographic data | |
CN104574304A (en) | Millimeter wave image reconstruction method and system | |
CN103985092A (en) | Post-processing noise elimination method for performing ICA analysis of plural f MRI data | |
Jiang et al. | Wavelet denoising of radio observations of rotating radio transients (RRATs): Improved timing parameters for eight RRATs | |
Yang et al. | Component isolation for multi-component signal analysis using a non-parametric Gaussian latent feature model | |
CN103530876B (en) | A kind of infrared image analysis method based on Fourier transform | |
CN103070681A (en) | Ventricular late potential separating method based on sparse component analysis | |
CN107169484B (en) | Image quality evaluation method based on human visual characteristics | |
JP2017533064A5 (en) | ||
CN105631839A (en) | Super-resolution measuring method for particle thickness | |
CN107590788A (en) | A kind of remote sensing image processing method |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
ASS | Succession or assignment of patent right |
Owner name: DONGRUAN MEDICAL SYSTEMS CO., LTD., SHENYANG Free format text: FORMER OWNER: DONGRUAN PHILIPS MEDICAL EQUIPMENT AND SYSTEM CO., LTD. Effective date: 20140210 Owner name: PHILIPS (CHINA) INVESTMENT CO., LTD. Effective date: 20140210 |
|
TR01 | Transfer of patent right | ||
TR01 | Transfer of patent right |
Effective date of registration: 20140210 Address after: Hunnan New Century Road 110179 Shenyang city of Liaoning Province, No. 16 Patentee after: Dongruan Medical Systems Co., Ltd., Shenyang Patentee after: Philips (China) Investment Co., Ltd. Address before: Shenyang Hunnan Industrial Zone East Software Park 110179 Liaoning city of Shenyang Province Patentee before: Dongruan Philips Medical Equipment and System Co., Ltd. |
|
CP03 | Change of name, title or address | ||
CP03 | Change of name, title or address |
Address after: 110179 No. 177-1 Innovation Road, Hunnan District, Shenyang City, Liaoning Province Co-patentee after: Philips (China) Investment Co., Ltd. Patentee after: DongSoft Medical System Co., Ltd. Address before: Hunnan New Century Road 110179 Shenyang city of Liaoning Province, No. 16 Co-patentee before: Philips (China) Investment Co., Ltd. Patentee before: Dongruan Medical Systems Co., Ltd., Shenyang |
|
TR01 | Transfer of patent right |
Effective date of registration: 20191225 Address after: The innovation road of Shenyang city Liaoning province 110179 Hunnan District No. 177-1 Patentee after: DongSoft Medical System Co., Ltd. Address before: The innovation road of Shenyang city Liaoning province 110179 Hunnan District No. 177-1 Co-patentee before: Philips (China) Investment Co., Ltd. Patentee before: DongSoft Medical System Co., Ltd. |
|
TR01 | Transfer of patent right |