JP5670742B2 - コンピュータ断層撮影システム用のフィルタ組立体 - Google Patents
コンピュータ断層撮影システム用のフィルタ組立体 Download PDFInfo
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- JP5670742B2 JP5670742B2 JP2010540197A JP2010540197A JP5670742B2 JP 5670742 B2 JP5670742 B2 JP 5670742B2 JP 2010540197 A JP2010540197 A JP 2010540197A JP 2010540197 A JP2010540197 A JP 2010540197A JP 5670742 B2 JP5670742 B2 JP 5670742B2
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- Prior art keywords
- filter
- support plate
- filter element
- filter assembly
- attenuation
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- Expired - Fee Related
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- 238000002591 computed tomography Methods 0.000 title claims description 11
- 125000006850 spacer group Chemical group 0.000 claims description 4
- 229920000642 polymer Polymers 0.000 description 6
- 239000004809 Teflon Substances 0.000 description 4
- 229920006362 Teflon® Polymers 0.000 description 4
- 238000013016 damping Methods 0.000 description 4
- 238000003325 tomography Methods 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000002238 attenuated effect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229920001059 synthetic polymer Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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
- A61B6/40—Arrangements for generating radiation specially adapted for radiation diagnosis
- A61B6/4035—Arrangements for generating radiation specially adapted for radiation diagnosis the source being combined with a filter or grating
-
- 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
- G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
- G21K—TECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
- G21K1/00—Arrangements for handling particles or ionising radiation, e.g. focusing or moderating
- G21K1/10—Scattering devices; Absorbing devices; Ionising radiation filters
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Medical Informatics (AREA)
- High Energy & Nuclear Physics (AREA)
- Surgery (AREA)
- Biomedical Technology (AREA)
- Veterinary Medicine (AREA)
- Biophysics (AREA)
- Public Health (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Optics & Photonics (AREA)
- Pathology (AREA)
- Radiology & Medical Imaging (AREA)
- General Health & Medical Sciences (AREA)
- Heart & Thoracic Surgery (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Pulmonology (AREA)
- Apparatus For Radiation Diagnosis (AREA)
Description
・ X線ビームを減衰し、且つ投影軸に対して平行である中心軸を備える、フィルタ要素;及び、
・ 上方に該フィルタ要素が取り付けられる、フィルタ要素をX線ビーム内において位置付ける第1の支持プレート、
を有する。フィルタ要素及び第1の支持プレートは、投影軸に対して垂直である方向に沿ってフィルタ組立体の中心部においてノッチ成形される(notch-shaped)。
Claims (8)
- 投影軸に沿ってX線ビームを投影するX線源を備えるコンピュータ断層撮影システムにおいて使用されるよう意図されたフィルタ組立体であって:
前記X線ビームを減衰し、前記投影軸に対して平行である中心軸を備える、フィルタ要素と;
該フィルタ要素を前記X線ビーム内において位置付けるための、前記フィルタ要素が取り付けられる、第1の支持プレートであって、前記フィルタ要素及び前記第1の支持プレートは、前記投影軸に対して垂直である方向に沿って当該フィルタ組立体の中心部においてノッチ形状にされる、第1の支持プレートと;
前記第1の支持プレートの形状に類似する形状を備え、前記フィルタ要素を挟むよう前記第1の支持プレートと協働する、第2の支持プレートと;を有する、
フィルタ組立体。 - 少なくとも1つの追加的なフィルタ要素及び支持プレートを更に有し、該少なくとも1つの追加的なフィルタ要素及び支持プレートは夫々、前記フィルタ要素及び前記第1の支持プレートの形状に類似する形状を備える、
請求項1記載のフィルタ組立体。 - 各フィルタ要素は、2つの支持プレートによって挟まれる、
請求項2記載のフィルタ組立体。 - 前記支持プレートは、前記支持プレートに対面する前記フィルタ要素の側面を完全に覆うよう成形される、
請求項1乃至3のうちいずれか一項記載のフィルタ組立体。 - 前記ノッチは、サドルノッチである、
請求項4記載のフィルタ組立体。 - カセットを形成するよう前記支持プレートを締結する締結手段を更に有する、
請求項4記載のフィルタ組立体。 - 前記締結手段は、前記支持プレート間の距離を調節するスペーサブッシュを有する、
請求項6記載のフィルタ組立体。 - 前記フィルタ要素は、複数の突起を有し、該複数の突起は、前記フィルタ要素を前記支持プレート上に取り付けるよう前記支持プレートに配置される凹部と協働する、
請求項7記載のフィルタ組立体。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN200710306618 | 2007-12-28 | ||
CN200710306618.0 | 2007-12-28 | ||
PCT/IB2008/055403 WO2009083878A1 (en) | 2007-12-28 | 2008-12-18 | Filter assembly for computed tomography systems |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2011507652A JP2011507652A (ja) | 2011-03-10 |
JP5670742B2 true JP5670742B2 (ja) | 2015-02-18 |
Family
ID=40521387
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2010540197A Expired - Fee Related JP5670742B2 (ja) | 2007-12-28 | 2008-12-18 | コンピュータ断層撮影システム用のフィルタ組立体 |
Country Status (6)
Country | Link |
---|---|
US (1) | US8325879B2 (ja) |
EP (1) | EP2229102A1 (ja) |
JP (1) | JP5670742B2 (ja) |
CN (1) | CN101909523B (ja) |
RU (1) | RU2491021C2 (ja) |
WO (1) | WO2009083878A1 (ja) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102125437B (zh) * | 2010-01-12 | 2014-07-16 | 深圳迈瑞生物医疗电子股份有限公司 | X射线束过滤装置、限束器及医用诊断x射线设备 |
CN103093850B (zh) * | 2011-10-31 | 2017-04-26 | Ge医疗系统环球技术有限公司 | 一种用于计算机断层摄影系统的滤过器组件以及该系统 |
DE102012219051A1 (de) * | 2012-10-18 | 2014-04-24 | Klinikum Der Universität München | Auswahl eines Strahlungsformfilters |
CN103236279B (zh) * | 2013-04-18 | 2015-12-23 | 飞利浦(中国)投资有限公司 | Ct机过滤器 |
CN103271747B (zh) * | 2013-05-15 | 2015-05-13 | 沈阳东软医疗系统有限公司 | Ct机上切片装置及切换调整方法 |
US9901314B2 (en) | 2013-08-13 | 2018-02-27 | Koninklijke Philips N.V. | Adjustable bow-tie filter for achieving optimal SNR in helical computed tomography |
JP6215108B2 (ja) * | 2014-03-27 | 2017-10-18 | 株式会社日立製作所 | 放射線治療装置向けベッド位置決め装置 |
CN103932729A (zh) * | 2014-04-08 | 2014-07-23 | 江苏中惠医疗科技股份有限公司 | 一种计算机断层扫描系统的x光射线过滤器 |
CN104127198B (zh) * | 2014-07-10 | 2016-06-08 | 中国科学院苏州生物医学工程技术研究所 | 一种ct前置滤线器 |
RU168369U1 (ru) * | 2016-03-31 | 2017-01-30 | Общество с ограниченной ответственностью Совместное русско-французское предприятие "СпектрАп" | Рентгеновский фильтр |
US11324462B2 (en) | 2017-11-14 | 2022-05-10 | General Electric Company | Methods and systems for fast filter change |
CN109316199B (zh) * | 2018-09-18 | 2022-06-28 | 上海联影医疗科技股份有限公司 | 一种准直器过滤组件、准直器及医疗设备 |
US10799193B2 (en) | 2019-02-12 | 2020-10-13 | Malcova LLC | Method and apparatus for anatomically-specified conformation computed tomography |
CN110353712B (zh) * | 2019-07-19 | 2023-07-21 | 深圳安科高技术股份有限公司 | 一种滤波器、调节ct系统射线束的方法及装置 |
US10531844B1 (en) | 2019-08-09 | 2020-01-14 | Malcova LLC | Narrow beam CT using a 3D fluence modulation and scatter shield system |
US11160518B2 (en) * | 2019-08-16 | 2021-11-02 | GE Precision Healthcare LLC | Methods and systems for integrated filter system |
US11986337B2 (en) * | 2020-07-14 | 2024-05-21 | The Regents Of The University Of California | Dose reduction for cardiac computed tomography |
US11622735B1 (en) | 2022-10-20 | 2023-04-11 | MALCOVA, Inc. | Plural-plane narrow-beam computed tomography |
CN117294280B (zh) * | 2023-11-24 | 2024-02-06 | 苏州清听声学科技有限公司 | 一种用于去除参量阵扬声器伪噪声的超声滤波器 |
Family Cites Families (18)
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US2405444A (en) * | 1942-08-05 | 1946-08-06 | Moreau Santiago | Radiographic filter |
US3717768A (en) * | 1970-02-09 | 1973-02-20 | Medinova Ab | X-ray filter device in combination with a positioning light converging means |
JPS5425689A (en) | 1977-07-29 | 1979-02-26 | Toshiba Corp | Wedge filter unit |
US4288695A (en) * | 1979-04-13 | 1981-09-08 | Technicare Corporation | Computerized tomographic scanner with shaped radiation filter |
US4399550A (en) * | 1981-02-27 | 1983-08-16 | General Electric Company | Spinning filter for X-ray apparatus |
JPS6086308U (ja) * | 1983-11-18 | 1985-06-14 | 株式会社日立メデイコ | Ct装置 |
JPS61165707U (ja) * | 1985-04-05 | 1986-10-14 | ||
US4975933A (en) * | 1990-03-26 | 1990-12-04 | General Electric Company | Bow-tie X-ray filter assembly for dual energy tomography |
RU2145485C1 (ru) * | 1998-03-12 | 2000-02-20 | Кванта Вижн, Инк. | Ультрамалоугловая рентгеновская томография |
JP2002102217A (ja) | 2000-09-28 | 2002-04-09 | Ge Medical Systems Global Technology Co Llc | X線ctシステム、ガントリ装置、コンソール端末及びその制御方法及び記憶媒体 |
US20040120464A1 (en) * | 2002-12-19 | 2004-06-24 | Hoffman David Michael | Cast collimators for CT detectors and methods of making same |
US7046756B2 (en) * | 2003-05-20 | 2006-05-16 | General Electric Company | Rotatable filter for a pre-subject CT collimator having multiple filtering profiles |
JP4041025B2 (ja) | 2003-07-15 | 2008-01-30 | ジーイー・メディカル・システムズ・グローバル・テクノロジー・カンパニー・エルエルシー | X線分布調整フィルタ装置およびそれを用いたx線ct装置 |
US6990171B2 (en) * | 2003-10-27 | 2006-01-24 | General Electric Company | System and method of determining a user-defined region-of-interest of an imaging subject for x-ray flux management control |
JP4891673B2 (ja) * | 2005-06-30 | 2012-03-07 | 株式会社東芝 | X線ct装置 |
US7535987B2 (en) * | 2005-06-30 | 2009-05-19 | Kabushiki Kaisha Toshiba | X-ray CT apparatus |
US7254216B2 (en) * | 2005-07-29 | 2007-08-07 | General Electric Company | Methods and apparatus for filtering a radiation beam and CT imaging systems using same |
US7330535B2 (en) * | 2005-11-10 | 2008-02-12 | General Electric Company | X-ray flux management device |
-
2008
- 2008-12-18 JP JP2010540197A patent/JP5670742B2/ja not_active Expired - Fee Related
- 2008-12-18 CN CN2008801229735A patent/CN101909523B/zh not_active Expired - Fee Related
- 2008-12-18 WO PCT/IB2008/055403 patent/WO2009083878A1/en active Application Filing
- 2008-12-18 EP EP08867019A patent/EP2229102A1/en not_active Withdrawn
- 2008-12-18 US US12/809,082 patent/US8325879B2/en not_active Expired - Fee Related
- 2008-12-18 RU RU2010131464/14A patent/RU2491021C2/ru not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
WO2009083878A1 (en) | 2009-07-09 |
RU2491021C2 (ru) | 2013-08-27 |
RU2010131464A (ru) | 2012-02-10 |
US8325879B2 (en) | 2012-12-04 |
CN101909523B (zh) | 2013-03-27 |
US20110033030A1 (en) | 2011-02-10 |
JP2011507652A (ja) | 2011-03-10 |
EP2229102A1 (en) | 2010-09-22 |
CN101909523A (zh) | 2010-12-08 |
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