CN103800025B - Ct扫描仪及其散焦强度测量方法及散焦校正方法 - Google Patents
Ct扫描仪及其散焦强度测量方法及散焦校正方法 Download PDFInfo
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- CN103800025B CN103800025B CN201210437063.4A CN201210437063A CN103800025B CN 103800025 B CN103800025 B CN 103800025B CN 201210437063 A CN201210437063 A CN 201210437063A CN 103800025 B CN103800025 B CN 103800025B
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- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000000691 measurement method Methods 0.000 title description 10
- 238000009826 distribution Methods 0.000 claims abstract description 30
- 230000005855 radiation Effects 0.000 claims abstract description 23
- 230000000007 visual effect Effects 0.000 claims description 13
- 230000003068 static effect Effects 0.000 claims description 6
- 238000005070 sampling Methods 0.000 claims description 4
- 230000003287 optical effect Effects 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 4
- 238000001514 detection method Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000053 physical method Methods 0.000 description 2
- 238000004846 x-ray emission Methods 0.000 description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000000205 computational method Methods 0.000 description 1
- 238000002591 computed tomography Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000003325 tomography Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
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- 230000003313 weakening effect Effects 0.000 description 1
Classifications
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- 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
- G01—MEASURING; TESTING
- G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
- G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
- G01T1/29—Measurement performed on radiation beams, e.g. position or section of the beam; Measurement of spatial distribution of radiation
- G01T1/2914—Measurement of spatial distribution of radiation
- G01T1/2985—In depth localisation, e.g. using positron emitters; Tomographic imaging (longitudinal and transverse section imaging; apparatus for radiation diagnosis sequentially in different planes, steroscopic radiation diagnosis)
-
- 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
- A61B6/40—Arrangements for generating radiation specially adapted for radiation diagnosis
- A61B6/4021—Arrangements for generating radiation specially adapted for radiation diagnosis involving movement of the focal spot
-
- 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
- A61B6/42—Arrangements for detecting radiation specially adapted for radiation diagnosis
- A61B6/4291—Arrangements for detecting radiation specially adapted for radiation diagnosis the detector being combined with a grid or grating
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- General Physics & Mathematics (AREA)
- High Energy & Nuclear Physics (AREA)
- Molecular Biology (AREA)
- Medical Informatics (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Biomedical Technology (AREA)
- Pulmonology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Optics & Photonics (AREA)
- Pathology (AREA)
- Radiology & Medical Imaging (AREA)
- Biophysics (AREA)
- Heart & Thoracic Surgery (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)
Abstract
Description
Claims (10)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201611243857.1A CN106725567B (zh) | 2012-11-05 | 2012-11-05 | 电子计算机x射线断层扫描仪 |
CN201611244684.5A CN106725568B (zh) | 2012-11-05 | 2012-11-05 | Ct扫描仪散焦强度测量方法 |
CN201210437063.4A CN103800025B (zh) | 2012-11-05 | 2012-11-05 | Ct扫描仪及其散焦强度测量方法及散焦校正方法 |
CN201611243499.4A CN106667515B (zh) | 2012-11-05 | 2012-11-05 | Ct扫描仪散焦校正方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201210437063.4A CN103800025B (zh) | 2012-11-05 | 2012-11-05 | Ct扫描仪及其散焦强度测量方法及散焦校正方法 |
Related Child Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201611243499.4A Division CN106667515B (zh) | 2012-11-05 | 2012-11-05 | Ct扫描仪散焦校正方法 |
CN201611243857.1A Division CN106725567B (zh) | 2012-11-05 | 2012-11-05 | 电子计算机x射线断层扫描仪 |
CN201611244684.5A Division CN106725568B (zh) | 2012-11-05 | 2012-11-05 | Ct扫描仪散焦强度测量方法 |
Publications (2)
Publication Number | Publication Date |
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CN103800025A CN103800025A (zh) | 2014-05-21 |
CN103800025B true CN103800025B (zh) | 2016-12-21 |
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Family Applications (4)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201210437063.4A Active CN103800025B (zh) | 2012-11-05 | 2012-11-05 | Ct扫描仪及其散焦强度测量方法及散焦校正方法 |
CN201611243857.1A Active CN106725567B (zh) | 2012-11-05 | 2012-11-05 | 电子计算机x射线断层扫描仪 |
CN201611243499.4A Active CN106667515B (zh) | 2012-11-05 | 2012-11-05 | Ct扫描仪散焦校正方法 |
CN201611244684.5A Active CN106725568B (zh) | 2012-11-05 | 2012-11-05 | Ct扫描仪散焦强度测量方法 |
Family Applications After (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201611243857.1A Active CN106725567B (zh) | 2012-11-05 | 2012-11-05 | 电子计算机x射线断层扫描仪 |
CN201611243499.4A Active CN106667515B (zh) | 2012-11-05 | 2012-11-05 | Ct扫描仪散焦校正方法 |
CN201611244684.5A Active CN106725568B (zh) | 2012-11-05 | 2012-11-05 | Ct扫描仪散焦强度测量方法 |
Country Status (1)
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CN (4) | CN103800025B (zh) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106361367B (zh) * | 2016-12-01 | 2019-10-08 | 上海联影医疗科技有限公司 | 一种检测器的校正方法和使用该校正方法的装置及设备 |
CN108169787B (zh) * | 2017-12-27 | 2020-10-13 | 上海联影医疗科技有限公司 | Pet探测器、pet系统及pet探测方法 |
JP6988732B2 (ja) * | 2018-08-02 | 2022-01-05 | 株式会社島津製作所 | 放射線画像処理装置および放射線画像処理方法 |
CN110108230B (zh) * | 2019-05-06 | 2021-04-16 | 南京理工大学 | 基于图像差分与lm迭代的二值光栅投影离焦程度评估方法 |
CN110559001B (zh) * | 2019-09-03 | 2020-10-09 | 明峰医疗系统股份有限公司 | 一种ct扫描仪散焦辐射强度分布测量方法 |
CN110755101B (zh) * | 2019-10-23 | 2023-07-28 | 东软医疗系统股份有限公司 | 一种ct扫描方法和装置 |
CN111789624B (zh) * | 2020-06-29 | 2023-08-08 | 上海联影医疗科技股份有限公司 | 散焦辐射测量方法、装置、计算机设备和可读存储介质 |
CN113017673B (zh) * | 2021-03-03 | 2022-08-26 | 明峰医疗系统股份有限公司 | 一种模体的定位装置 |
CN114903507B (zh) * | 2022-05-16 | 2023-06-09 | 张海光 | 一种医学图像数据处理系统及方法 |
CN115105108B (zh) * | 2022-06-30 | 2023-06-09 | 赛诺威盛科技(北京)股份有限公司 | 散焦校正方法、装置、散焦校正模体及电子装置 |
CN117064427B (zh) * | 2023-10-07 | 2024-05-14 | 北京富通康影科技有限公司 | 一种三源ct增强扫描中造影剂浓度监控及跟踪方法与系统 |
CN117679060A (zh) * | 2024-02-01 | 2024-03-12 | 赛诺威盛科技(北京)股份有限公司 | 基于薄圆盘模体的球管机械位置校正方法及系统 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4809172A (en) * | 1987-03-11 | 1989-02-28 | Kabushiki Kaisha Toshiba | Method for obtaining image data with a tomographic apparatus |
US5757951A (en) * | 1994-12-20 | 1998-05-26 | Picker International, Inc. | Correction of off-focal radiation |
US6628744B1 (en) * | 2002-09-26 | 2003-09-30 | Koninklijke Philips Electronics N.V. | Off-focal radiation correction in CT |
CN1757378A (zh) * | 2004-10-07 | 2006-04-12 | Ge医疗系统环球技术有限公司 | X射线剂量补偿方法及x射线计算机断层摄影设备 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102009015032A1 (de) * | 2009-03-26 | 2010-10-07 | Siemens Aktiengesellschaft | Iterative Extrafokalstrahlungs-Korrektur bei der Rekonstruktion von CT-Bildern |
DE102009048073B3 (de) * | 2009-10-01 | 2011-07-07 | Siemens Aktiengesellschaft, 80333 | CT-Datenbearbeitungsverfahren, CT-System, Computerprogramm und computerlesbarer Datenträger zur Reduzierung von Extrafokalstrahlungs-Effekten unter Minimierung des Rechenaufwandes |
DE102011006579A1 (de) * | 2011-03-31 | 2012-10-04 | Siemens Aktiengesellschaft | Verfahren zur Erzeugung von Bilddaten eines Untersuchungsobjekts, Projektionsdatenverarbeitungseinrichtung, Röntgensystem und Computerprogramm |
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2012
- 2012-11-05 CN CN201210437063.4A patent/CN103800025B/zh active Active
- 2012-11-05 CN CN201611243857.1A patent/CN106725567B/zh active Active
- 2012-11-05 CN CN201611243499.4A patent/CN106667515B/zh active Active
- 2012-11-05 CN CN201611244684.5A patent/CN106725568B/zh active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4809172A (en) * | 1987-03-11 | 1989-02-28 | Kabushiki Kaisha Toshiba | Method for obtaining image data with a tomographic apparatus |
US5757951A (en) * | 1994-12-20 | 1998-05-26 | Picker International, Inc. | Correction of off-focal radiation |
US6628744B1 (en) * | 2002-09-26 | 2003-09-30 | Koninklijke Philips Electronics N.V. | Off-focal radiation correction in CT |
CN1757378A (zh) * | 2004-10-07 | 2006-04-12 | Ge医疗系统环球技术有限公司 | X射线剂量补偿方法及x射线计算机断层摄影设备 |
Also Published As
Publication number | Publication date |
---|---|
CN106725567A (zh) | 2017-05-31 |
CN106667515B (zh) | 2019-11-19 |
CN106725568A (zh) | 2017-05-31 |
CN106725568B (zh) | 2019-12-20 |
CN106667515A (zh) | 2017-05-17 |
CN106725567B (zh) | 2020-02-07 |
CN103800025A (zh) | 2014-05-21 |
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Address after: 201815 No. 1180 Xingxian Road, Jiading Industrial Zone, Jiading District, Shanghai Patentee after: Shanghai Lianying Medical Technology Co., Ltd Address before: 201815 No. 1180 Xingxian Road, Jiading Industrial Zone, Jiading District, Shanghai Patentee before: SHANGHAI UNITED IMAGING HEALTHCARE Co.,Ltd. |
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Address after: 201807 2258 Chengbei Road, Jiading District, Shanghai Patentee after: Shanghai Lianying Medical Technology Co.,Ltd. Address before: 201815 No. 1180 Xingxian Road, Jiading Industrial Zone, Jiading District, Shanghai Patentee before: Shanghai Lianying Medical Technology Co.,Ltd. |
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