RU2681075C2 - Терапия пучками заряженных частиц и магнитно-резонансная томография - Google Patents
Терапия пучками заряженных частиц и магнитно-резонансная томография Download PDFInfo
- Publication number
- RU2681075C2 RU2681075C2 RU2017102494A RU2017102494A RU2681075C2 RU 2681075 C2 RU2681075 C2 RU 2681075C2 RU 2017102494 A RU2017102494 A RU 2017102494A RU 2017102494 A RU2017102494 A RU 2017102494A RU 2681075 C2 RU2681075 C2 RU 2681075C2
- Authority
- RU
- Russia
- Prior art keywords
- active compensation
- magnet
- compensation coil
- coil
- particle beam
- Prior art date
Links
- 239000002245 particle Substances 0.000 title claims abstract description 89
- 238000002595 magnetic resonance imaging Methods 0.000 title claims abstract description 51
- 238000002560 therapeutic procedure Methods 0.000 title description 7
- 230000005291 magnetic effect Effects 0.000 claims abstract description 81
- 238000003384 imaging method Methods 0.000 claims abstract description 17
- 238000012800 visualization Methods 0.000 claims description 36
- 239000002184 metal Substances 0.000 claims description 16
- 229910052751 metal Inorganic materials 0.000 claims description 16
- 238000012937 correction Methods 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 238000012360 testing method Methods 0.000 abstract description 4
- 238000005452 bending Methods 0.000 abstract description 3
- 239000003814 drug Substances 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 238000009826 distribution Methods 0.000 description 16
- 238000002661 proton therapy Methods 0.000 description 15
- 238000000034 method Methods 0.000 description 11
- 238000013461 design Methods 0.000 description 10
- 239000000463 material Substances 0.000 description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 4
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 230000005294 ferromagnetic effect Effects 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 239000004020 conductor Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 230000003993 interaction Effects 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 206010028980 Neoplasm Diseases 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 238000001959 radiotherapy Methods 0.000 description 2
- 210000003484 anatomy Anatomy 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves
- A61B5/055—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N5/1048—Monitoring, verifying, controlling systems and methods
- A61N5/1049—Monitoring, verifying, controlling systems and methods for verifying the position of the patient with respect to the radiation beam
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N5/1077—Beam delivery systems
- A61N5/1081—Rotating beam systems with a specific mechanical construction, e.g. gantries
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
- G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
- G01R33/38—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field
- G01R33/3806—Open magnet assemblies for improved access to the sample, e.g. C-type or U-type magnets
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
- G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
- G01R33/38—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field
- G01R33/387—Compensation of inhomogeneities
- G01R33/3875—Compensation of inhomogeneities using correction coil assemblies, e.g. active shimming
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
- G01R33/44—Arrangements or instruments for measuring magnetic variables involving magnetic resonance using nuclear magnetic resonance [NMR]
- G01R33/48—NMR imaging systems
- G01R33/4808—Multimodal MR, e.g. MR combined with positron emission tomography [PET], MR combined with ultrasound or MR combined with computed tomography [CT]
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N5/1048—Monitoring, verifying, controlling systems and methods
- A61N5/1049—Monitoring, verifying, controlling systems and methods for verifying the position of the patient with respect to the radiation beam
- A61N2005/1055—Monitoring, verifying, controlling systems and methods for verifying the position of the patient with respect to the radiation beam using magnetic resonance imaging [MRI]
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N2005/1085—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy characterised by the type of particles applied to the patient
- A61N2005/1087—Ions; Protons
Landscapes
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Radiology & Medical Imaging (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Animal Behavior & Ethology (AREA)
- Pathology (AREA)
- General Physics & Mathematics (AREA)
- High Energy & Nuclear Physics (AREA)
- Theoretical Computer Science (AREA)
- Pulmonology (AREA)
- Biophysics (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Radiation-Therapy Devices (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP14174681 | 2014-06-27 | ||
| EP14174681.8 | 2014-06-27 | ||
| PCT/EP2015/063783 WO2015197475A1 (en) | 2014-06-27 | 2015-06-19 | Charged particle beam therapy and magnetic resonance imaging |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| RU2017102494A RU2017102494A (ru) | 2018-07-30 |
| RU2017102494A3 RU2017102494A3 (enExample) | 2019-01-09 |
| RU2681075C2 true RU2681075C2 (ru) | 2019-03-01 |
Family
ID=50982835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RU2017102494A RU2681075C2 (ru) | 2014-06-27 | 2015-06-19 | Терапия пучками заряженных частиц и магнитно-резонансная томография |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US10850127B2 (enExample) |
| EP (1) | EP3160585B1 (enExample) |
| JP (1) | JP6449920B2 (enExample) |
| CN (1) | CN106456994B (enExample) |
| RU (1) | RU2681075C2 (enExample) |
| WO (1) | WO2015197475A1 (enExample) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2792417C1 (ru) * | 2019-12-13 | 2023-03-22 | Кабусики Кайся Тосиба | Сканирующая катушка, сканирующий магнит и способ изготовления сканирующей катушки |
Families Citing this family (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011008969A1 (en) | 2009-07-15 | 2011-01-20 | Viewray Incorporated | Method and apparatus for shielding a linear accelerator and a magnetic resonance imaging device from each other |
| AU2013334064A1 (en) | 2012-10-26 | 2015-05-14 | Viewray Technologies, Inc. | Assessment and improvement of treatment using imaging of physiological responses to radiation therapy |
| US9446263B2 (en) | 2013-03-15 | 2016-09-20 | Viewray Technologies, Inc. | Systems and methods for linear accelerator radiotherapy with magnetic resonance imaging |
| CN108369265B (zh) * | 2015-12-02 | 2022-04-08 | 皇家飞利浦有限公司 | 用于质子治疗的可旋转磁体 |
| EP3423153B1 (en) | 2016-03-02 | 2021-05-19 | ViewRay Technologies, Inc. | Particle therapy with magnetic resonance imaging |
| EP3305368A1 (en) | 2016-10-07 | 2018-04-11 | Ion Beam Applications | Particle therapy apparatus comprising an mri |
| EP3306336A1 (en) | 2016-10-07 | 2018-04-11 | Ion Beam Applications S.A. | Hadron therapy device and mri device having magnetic field correcting means |
| EP3306335A1 (en) * | 2016-10-07 | 2018-04-11 | Ion Beam Applications S.A. | Apparatus and method for localizing the bragg peak of a hadron beam traversing a target tissue by magnetic resonance imaging |
| EP3308834B1 (en) | 2016-10-11 | 2019-01-09 | Ion Beam Applications | Particle therapy apparatus comprising an mri |
| CN106856654B (zh) * | 2017-03-13 | 2019-08-02 | 深圳市金石医疗科技有限公司 | 自屏蔽式磁共振装置 |
| GB2567193A (en) | 2017-10-05 | 2019-04-10 | Elekta ltd | Image guided radiation therapy apparatus |
| CN111712298B (zh) | 2017-12-06 | 2023-04-04 | 优瑞技术公司 | 放射疗法系统 |
| US20210299462A1 (en) * | 2018-06-18 | 2021-09-30 | National Institutes For Quantum And Radiological Science And Technology | Particle beam irradiation system, particle beam irradiation method, irradiatiion planning program, irradiation planning device, electromagnetic field generator, and irradiation device |
| GB2576579A (en) * | 2018-08-24 | 2020-02-26 | Magnetic Shields Ltd | Magnetic shield device |
| EP3639892B1 (en) * | 2018-10-15 | 2021-08-04 | Elekta Limited | Radiotherapy system and operating method |
| CN114796894B (zh) | 2018-11-14 | 2025-03-25 | 上海联影医疗科技股份有限公司 | 放射治疗系统 |
| CN109847196B (zh) * | 2018-12-29 | 2024-07-19 | 佛山瑞加图医疗科技有限公司 | 磁共振引导的放疗系统的磁场补偿系统和方法 |
| GB2582009B (en) * | 2019-03-08 | 2021-04-07 | Siemens Healthcare Ltd | Split magnet with rotating central component |
| EP4010720A4 (en) * | 2019-08-05 | 2023-08-09 | The Board Of Regents Of The University Of Texas System | INHOMOGENOUS MRI SYSTEM |
| CN111580030B (zh) * | 2020-05-13 | 2022-04-22 | 山东省肿瘤防治研究院(山东省肿瘤医院) | 用于核磁共振与放疗相融合的磁场制备结构、设备及系统 |
| CN115916332B (zh) * | 2020-06-17 | 2024-11-26 | 上海联影医疗科技股份有限公司 | 磁共振成像的系统和方法 |
| TWI843989B (zh) | 2021-02-19 | 2024-06-01 | 美商美威高能離子醫療系統公司 | 用於粒子治療系統之支架 |
| EP4152030B1 (en) * | 2021-09-17 | 2024-07-03 | Siemens Healthineers AG | Gradient coil assembly for a magnetic resonance imaging device and magnetic resonance imaging device |
| WO2025147939A1 (zh) * | 2024-01-11 | 2025-07-17 | 中南大学湘雅医院 | 一种磁共振引导的带电粒子束放疗系统 |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2007132466A (ru) * | 2007-08-28 | 2009-03-10 | Николай Викторович Анисимов (RU) | Способ исследования органов грудной и/ или брюшной полости методом магнитно-резонансной томографии |
| WO2011008969A1 (en) * | 2009-07-15 | 2011-01-20 | Viewray Incorporated | Method and apparatus for shielding a linear accelerator and a magnetic resonance imaging device from each other |
| WO2012164527A1 (en) * | 2011-05-31 | 2012-12-06 | Koninklijke Philips Electronics N.V. | Correcting the static magnetic field of an mri radiotherapy apparatus |
Family Cites Families (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6198957B1 (en) | 1997-12-19 | 2001-03-06 | Varian, Inc. | Radiotherapy machine including magnetic resonance imaging system |
| DE19928110A1 (de) * | 1999-06-19 | 2000-12-21 | Philips Corp Intellectual Pty | MR-Verfahren |
| US6725078B2 (en) | 2000-01-31 | 2004-04-20 | St. Louis University | System combining proton beam irradiation and magnetic resonance imaging |
| EP1725166B1 (en) * | 2004-02-20 | 2011-03-30 | University of Florida Research Foundation, Inc. | System for delivering conformal radiation therapy while simultaneously imaging soft tissue |
| US7135948B2 (en) * | 2004-10-05 | 2006-11-14 | Florida State University Research Foundation, Inc. | Dipole shim coil for external field adjustment of a shielded superconducting magnet |
| GB2427479B (en) * | 2005-06-22 | 2007-11-14 | Siemens Magnet Technology Ltd | Particle Radiation Therapy Equipment and method for performing particle radiation therapy |
| GB2427478B (en) | 2005-06-22 | 2008-02-20 | Siemens Magnet Technology Ltd | Particle radiation therapy equipment and method for simultaneous application of magnetic resonance imaging and particle radiation |
| CN103272337B (zh) * | 2005-10-17 | 2016-03-30 | 艾伯塔健康服务中心 | 集成的体外射束放射治疗和mri系统 |
| US9201129B2 (en) * | 2006-09-13 | 2015-12-01 | Kabushiki Kaisha Toshiba | Magnetic-resonance image diagnostic apparatus and method of controlling the same |
| DE102008007245B4 (de) * | 2007-02-28 | 2010-10-14 | Siemens Aktiengesellschaft | Kombiniertes Strahlentherapie- und Magnetresonanzgerät |
| US7920751B2 (en) * | 2007-03-16 | 2011-04-05 | General Electric Company | Adaptive gradient weighting technique for detector bad cell correction |
| EP2196240A1 (en) * | 2008-12-12 | 2010-06-16 | Koninklijke Philips Electronics N.V. | Therapeutic apparatus |
| US8427148B2 (en) | 2009-12-31 | 2013-04-23 | Analogic Corporation | System for combining magnetic resonance imaging with particle-based radiation systems for image guided radiation therapy |
| DE102010001743B4 (de) * | 2010-02-10 | 2012-07-12 | Siemens Aktiengesellschaft | Vorrichtung mit einer Kombination aus einer Magnetresonanzvorrichtung und einer Strahlentherapievorrichtung |
| US8536870B2 (en) * | 2010-04-21 | 2013-09-17 | William F. B. Punchard | Shim insert for high-field MRI magnets |
| GB2484529B (en) * | 2010-10-15 | 2012-09-19 | Siemens Ag | Beam deflection arrangement within a combined radiation therapy and magnetic resonance unit |
| CN103620437B (zh) * | 2011-06-27 | 2017-10-27 | 皇家飞利浦有限公司 | 使用具有fid和多梯度回波采集的超短回波时间脉冲序列以及水‑脂肪分离处理的骨mri |
| US8981779B2 (en) * | 2011-12-13 | 2015-03-17 | Viewray Incorporated | Active resistive shimming fro MRI devices |
| US8948341B2 (en) * | 2012-02-12 | 2015-02-03 | Christopher V. Beckman | Radiation therapy techniques using targeted wave superposition, magnetic field direction and real-time sensory feedback |
| EP2877089B1 (en) | 2012-07-27 | 2022-05-18 | University Health Network | Radiotherapy system integrating a radiation source with a magnetic resonance imaging apparatus with movable magnet components |
| JP6072300B2 (ja) * | 2013-02-06 | 2017-02-01 | コーニンクレッカ フィリップス エヌ ヴェKoninklijke Philips N.V. | ガントリを有する磁気共鳴イメージングシステム内の磁場歪曲コンポーネントの能動的補償 |
-
2015
- 2015-06-19 CN CN201580034876.0A patent/CN106456994B/zh not_active Expired - Fee Related
- 2015-06-19 US US15/319,984 patent/US10850127B2/en not_active Expired - Fee Related
- 2015-06-19 WO PCT/EP2015/063783 patent/WO2015197475A1/en not_active Ceased
- 2015-06-19 JP JP2016574949A patent/JP6449920B2/ja not_active Expired - Fee Related
- 2015-06-19 EP EP15729854.8A patent/EP3160585B1/en not_active Not-in-force
- 2015-06-19 RU RU2017102494A patent/RU2681075C2/ru not_active IP Right Cessation
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2007132466A (ru) * | 2007-08-28 | 2009-03-10 | Николай Викторович Анисимов (RU) | Способ исследования органов грудной и/ или брюшной полости методом магнитно-резонансной томографии |
| WO2011008969A1 (en) * | 2009-07-15 | 2011-01-20 | Viewray Incorporated | Method and apparatus for shielding a linear accelerator and a magnetic resonance imaging device from each other |
| WO2012164527A1 (en) * | 2011-05-31 | 2012-12-06 | Koninklijke Philips Electronics N.V. | Correcting the static magnetic field of an mri radiotherapy apparatus |
Non-Patent Citations (1)
| Title |
|---|
| LAGENDIJK et al. "MRI/linac integration", RADIOTHERAPY AND ONCOLOGY, ELSEVIER, vol.86, no.1, 26.11.2007, pp.25-29. * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2792417C1 (ru) * | 2019-12-13 | 2023-03-22 | Кабусики Кайся Тосиба | Сканирующая катушка, сканирующий магнит и способ изготовления сканирующей катушки |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2017520315A (ja) | 2017-07-27 |
| RU2017102494A3 (enExample) | 2019-01-09 |
| WO2015197475A1 (en) | 2015-12-30 |
| US10850127B2 (en) | 2020-12-01 |
| CN106456994A (zh) | 2017-02-22 |
| EP3160585B1 (en) | 2019-02-27 |
| EP3160585A1 (en) | 2017-05-03 |
| RU2017102494A (ru) | 2018-07-30 |
| US20170120075A1 (en) | 2017-05-04 |
| CN106456994B (zh) | 2019-11-12 |
| JP6449920B2 (ja) | 2019-01-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2681075C2 (ru) | Терапия пучками заряженных частиц и магнитно-резонансная томография | |
| JP5147451B2 (ja) | 放射線治療および磁気共鳴複合装置 | |
| US8983573B2 (en) | Radiation therapy system | |
| US8487269B2 (en) | Combined radiation therapy and magnetic resonance unit | |
| US10039519B2 (en) | Radiotherapy beam alignment with fiducial phantom imaging | |
| US10668302B2 (en) | Use of ancillary devices/accessories in radiotherapy systems | |
| US8903471B2 (en) | Beam deflection arrangement within a combined radiation therapy and magnetic resonance unit | |
| CN102145206B (zh) | 具有磁共振装置和辐射治疗装置的组合的设备 | |
| US10632327B2 (en) | MRI guided radiation therapy | |
| US20100174172A1 (en) | Mri system for upright radiotherapy | |
| CN111228657A (zh) | 一种磁共振图像引导的放射治疗系统 | |
| US11065473B2 (en) | Methods and systems for checking alignment of components of a radiotherapy system | |
| GB2549916A (en) | Radiotherapeutic apparatus | |
| KR20160059532A (ko) | 디스크형 mri 기반 방사선 치료기 시스템 | |
| GB2550528A (en) | Radiotherapeutic apparatus | |
| GB2489680A (en) | Electric cabling for radiotherapy apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM4A | The patent is invalid due to non-payment of fees |
Effective date: 20200620 |