CN109847196A - The magnetic field compensation system and method for the radiotherapy system of guided by magnetic resonance - Google Patents
The magnetic field compensation system and method for the radiotherapy system of guided by magnetic resonance Download PDFInfo
- Publication number
- CN109847196A CN109847196A CN201811645993.2A CN201811645993A CN109847196A CN 109847196 A CN109847196 A CN 109847196A CN 201811645993 A CN201811645993 A CN 201811645993A CN 109847196 A CN109847196 A CN 109847196A
- Authority
- CN
- China
- Prior art keywords
- compensation
- motor
- magnetic field
- magnetic
- guided
- 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.)
- Granted
Links
- 238000001959 radiotherapy Methods 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000005855 radiation Effects 0.000 claims abstract description 41
- 238000003384 imaging method Methods 0.000 claims abstract description 17
- 238000012360 testing method Methods 0.000 claims abstract description 7
- 230000006698 induction Effects 0.000 claims description 26
- 238000001514 detection method Methods 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 238000002595 magnetic resonance imaging Methods 0.000 claims 1
- 206010028980 Neoplasm Diseases 0.000 description 9
- 230000000694 effects Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Landscapes
- Radiation-Therapy Devices (AREA)
Abstract
The invention discloses a kind of magnetic field compensation system of the radiotherapy system of guided by magnetic resonance and methods, above-mentioned radiotherapy system includes MR imaging apparatus and radiotheraphy device, MR imaging apparatus includes main magnet, radiotheraphy device includes radiation head, radiation head is internally provided with grating blade and drives the motor of grating blade, the magnetic field compensation system includes compensation control device, compensation permanent magnet, and the magnetic field strength test device and position sensor being connected with motor, compensation control device are used to control the movement of compensation permanent magnet.The invention also discloses a kind of field compensation methods.The present invention can dynamically adjust the intensity in compensation magnetic field, so that effective operation of motor be effectively ensured.
Description
Technical field
The present invention relates to radiotherapy equipment technical fields, and in particular to a kind of magnetic field of the radiotherapy system of guided by magnetic resonance
Compensation system and method.
Background technique
The radiotherapy system of guided by magnetic resonance obtains the accurate position of patient tumors in radiotherapy by real-time magnetic resonance image
It sets, does not then influence tumor vicinity healthy cell again using the radiation that the radiation head of radiotheraphy device carries out effective dose to tumour,
And then realize more accurate radiotherapy.
But in the radiotherapy apparatus of guided by magnetic resonance, due to the influence of the high-intensity magnetic field of magnetic resonance, make radiation head at one
It works in magnetic field environment, causes the torque for the motor for driving grating blade to become smaller, influence the driving of the grating blade in radiation head,
It cannot even drive grating blade to move, lead to radiation head failure.The prior art is that a magnet is directly fixed on radiation head, with
It generates opposing magnetic field and reduces the magnetic field strength of motor present position, and then the torque for reducing motor declines degree.But this side
Formula has following defects that the motor when radiation head is moved relative to the magnetic field of magnetic resonance, in radiation head in magnetic resonance institute
Position in the magnetic field of generation be it is changed, the magnetic field strength of motor present position can also change, the torque of motor
Also can change therewith, and the above method generate opposing magnetic field magnetic field strength be it is fixed, be not easy to according to motor position tune
Whole magnetic field strength causes failure so that the torque for also resulting in motor is insufficient；In addition when the magnetic field that magnetic resonance itself generates occurs
When variation, the above method also cannot achieve the adjustment of opposing magnetic field intensity, to can not effectively eliminate or reduce magnetic field to motor
The influence of operation.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of magnetic field compensation system of the radiotherapy system of guided by magnetic resonance and
Method can dynamically adjust the intensity in compensation magnetic field, so that effective operation of motor be effectively ensured.
In order to solve the above technical problem, the present invention provides technical solution it is as follows:
A kind of magnetic field compensation system of the radiotherapy system of guided by magnetic resonance, the radiotherapy system include MR imaging apparatus and put
Device is treated, the MR imaging apparatus includes main magnet, and the radiotheraphy device includes radiation head, setting inside the radiation head
There is grating blade and drive the motor of the grating blade, characterized in that the magnetic field compensation system includes compensation control device, mends
Permanent magnet is repaid, and the magnetic field strength test device and position sensor that are connected with motor, the compensation control device are used
In the movement of control compensation permanent magnet.
The MR imaging apparatus further includes base, and the main magnet has been rotatably coupled on the base, described
Radiotheraphy device further includes bracket, and the radiation head is fixed on the bracket, and the bracket is pivotably connected in the main magnetic
On body.
The swing angle of the relatively described main magnet of the bracket is -20 °~20 °.
The bracket and the main magnet are hinged.
The encoder for detecting the bracket displacement is connected on the bracket.
Magnetic shield is connected on the position sensor.
The magnetic shield is in sphere shape.
The radiation head is in cone.
A kind of field compensation method of the radiotherapy system of guided by magnetic resonance, the radiotherapy system includes MR imaging apparatus
And radiotheraphy device, the MR imaging apparatus include main magnet, the radiotheraphy device includes radiation head, inside the radiation head
It is provided with grating blade and drives the motor of the grating blade, defining magnetic field caused by the main magnet is main field, is mended
Repay permanent magnet generation magnetic field for compensation magnetic field, the field compensation method the following steps are included:
1) magnetic induction intensity of the detection motor position and motor in main field；
2) magnetic induction intensity and motor position according to motor in main field, calculate compensation permanent magnet with respect to motor preset away from
From so that magnetic induction of the motor in compensation magnetic field is strong between compensation permanent magnet and motor after the pre-determined distance
It spends identical with magnetic induction intensity of the motor in main field；
And magnetic induction intensity direction of the motor in main field is determined according to the Distribution of Magnetic Field of motor position and main field；
3) compensation permanent magnet is moved to motor at a distance of the position of the pre-determined distance, and makes motor in compensation magnetic field
The magnetic induction intensity of magnetic induction intensity direction and the motor in main field is contrary.
The invention has the following advantages: magnetic field compensation system and the side of the radiotherapy system of guided by magnetic resonance of the invention
Method can compensate intensity and the direction in magnetic field to adjust according to magnetic field at motor and motor position, real-time motion compensation permanent magnet,
To effectively realize that the dynamic adjustment in compensation magnetic field, the influence for effectively eliminating or reducing main field to motor operation guarantee motor
Effective operation；Compensation effect and better reliability；Convenient for operation, regulated efficiency and adjustment reliability are higher.
Detailed description of the invention
Fig. 1 is the schematic illustration of compensation device of the present invention；
Fig. 2 is the structural schematic diagram of radiotherapy system of the invention；
Fig. 3 is the side structure schematic view of Fig. 2；
In figure: 1, main magnet, 2, bracket, 3, radiation head.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings and specific examples, so that those skilled in the art can be with
It more fully understands the present invention and can be practiced, but illustrated embodiment is not as a limitation of the invention.
As shown in Figure 1, Figure 2 and Figure 3, present embodiment discloses a kind of magnetic field of radiotherapy system for guided by magnetic resonance benefits
System is repaid, radiotherapy system includes MR imaging apparatus and radiotheraphy device, and MR imaging apparatus includes main magnet 1, radiotherapy dress
It sets including radiation head 3, the motor for being internally provided with grating blade and driving grating blade of radiation head 3；
Wherein, MR imaging apparatus is for acquiring magnetic resonance image to obtain the exact position of patient tumors in radiotherapy；Radiotherapy
Device is used to carry out radiotherapy to tumour, and radiation head 3 is used to issue the radiographic source of radiation, to obtain for MR imaging apparatus
The position for obtaining tumour carries out radiotherapy；Motor driven grating blade is moved to change the shape of the beam of the injection of radiation head 3
And size, to adapt to shape, the size and location of tumour.
Above-mentioned magnetic field compensation system includes compensation control device, compensation permanent magnet, and the magnetic field being connected with motor
Strength testing device and position sensor；Magnetic field strength test device is for detecting motor in the magnetic field caused by main magnet 1
Magnetic induction intensity；Position sensor is used to detect the position of motor；Compensation control device is used to control the shifting of compensation permanent magnet
Dynamic, by control compensation permanent magnet with respect to motor position, adjustable motor is in the magnetic field caused by compensation permanent magnet
The size of magnetic induction intensity.
Further, further, magnetic field strength test device uses Tesla meter.
In a wherein embodiment, MR imaging apparatus further includes base, has been rotatably coupled master on base
Magnet 1 namely main magnet 1 itself can rotate with respect to base；As shown in Fig. 2-Fig. 3, radiotheraphy device further includes bracket 2, branch
Radiation head 3 is fixed on frame 2, bracket 2 is pivotably connected in main magnet 1.Radiation head 3 is driven by the swing of bracket 2
Swing, the adjusting range in the beam direction of the injection of radiation head 3 can be increased, so as to swollen from the irradiation of more directions
Tumor, the setting structure is simple, is convenient for operation, can also save space.In addition when radiation head 3 is swung with respect to main field 1, motor position
Setting can also change correspondingly, therefore cooperate with above-mentioned compensation control device, can preferably eliminate magnetic field produced by main magnet 1 to electricity
The influence of machine guarantees the normal operation of motor.
By the rotation of main magnet 1 and the swing of bracket 2 so that radiation head 3 is moved with following two, one is with
The rotation of main magnet 1, one is the swings of opposite main magnet 1, thus the adjustment of more conducively angle of radiation.
Further, bracket 2 is -20 °~20 ° with respect to the swing angle of main magnet 1, is more conducively had to tumor locus
Effect irradiation, guarantees the intensity and effective dose of irradiation.
In a wherein embodiment, bracket 2 and main magnet 1 are hinged or bracket 2 and main magnet 1 pass through bearing
It is connected, the swing of radiation head 3 is better achieved.
In a wherein embodiment, magnetic shield is connected on position sensor, with prevent position sensor by
Magnetic disturbance.
Further, magnetic shield is in sphere shape, more preferably to play the effect of magnetic protection.
In a wherein embodiment, radiation head 3 with the installation for grating blade of being more convenient for, and is convenient in cone
The installation of radiation head 3 and bracket 2.Radiation head 3 is not limited to above-mentioned shape, and circle or other shapes can also be used.
In a wherein embodiment, the encoder of the displacement for detection support 2 is connected on bracket 2, with more preferable
Ground determines the position of radiation head 3, it is ensured that the radial location of beam.
Wherein, the magnet bore of main magnet 1 being internally provided with for accommodating patient.
Further, the isocenter point of radiotheraphy device is located on the axis of magnet bore.
According to the definition of international standard IEC isocenter (ISOCENTRE): in radiology device, the base of various movements
Fiducial axis line is around the movement of common center point, and radial axis is passed through in this smallest sphere centered on putting, this point is equal centers
Point.As long as namely the tumor center of patient is placed on isocenter point, no matter what angle bracket, radiation head and therapeutic bed are in
Degree, or make any rotation, radiation center is overlapped with tumor center always.
The present embodiment also discloses a kind of field compensation method of radiotherapy system for guided by magnetic resonance, defines main magnet
It is main field that 1 magnetic field generated, which is magnetic field caused by main field namely MR imaging apparatus, the magnetic that compensation permanent magnet generates
For compensation magnetic field, above-mentioned field compensation method the following steps are included:
1) motor position is detected using position sensor, and detect motor in main field using magnetic field strength test device
In magnetic induction intensity；
2) it is opposite to calculate compensation permanent magnet for magnetic induction intensity and motor position of the compensation control device according to motor in main field
The pre-determined distance of motor, so that motor is in compensation magnetic field between compensation permanent magnet and motor after above-mentioned pre-determined distance
The magnetic induction intensity of magnetic induction intensity and motor in main field is identical；
And magnetic induction intensity direction of the motor in main field is determined according to the Distribution of Magnetic Field of motor position and main field；It can be with
Understand, due to the Distribution of Magnetic Field situation of main field be it is determining, can be determined motor in main magnetic according to the distribution situation
Magnetic induction intensity direction in；
3) it is moved to motor using compensation control device control compensation permanent magnet at a distance of the position of above-mentioned pre-determined distance, and made
Magnetic induction intensity of magnetic induction intensity direction and motor of the motor in compensation magnetic field in main field is contrary, such as can lead to
The direction of adjustment permanent magnet is crossed to change the direction in compensation magnetic field, so that magnetic induction intensity side of the motor in compensation magnetic field
To contrary with magnetic induction intensity of the motor in main field.
Influence of the main field to motor can be offset in real time by the above process, the normal operation of motor is effectively ensured.
The magnetic field compensation apparatus and method of the radiotherapy system of the guided by magnetic resonance of the present embodiment, can effectively realize at motor
The real-time measurement in magnetic field and motor position, and the intensity for compensating magnetic field is adjusted according to the real-time motion compensation permanent magnet of measurement result
And direction, to effectively realize the dynamic adjustment in compensation magnetic field, the influence for effectively eliminating or reducing main field to motor operation is protected
Demonstrate,prove effective operation of motor；It is relatively stable to compensate the compensation magnetic field that permanent magnet generates, benefit is adjusted by motion compensation permanent magnet
Repay the intensity in magnetic field, compensation effect and better reliability；The compensation device convenient for operation, regulated efficiency and adjustment reliability compared with
It is high.
Embodiment described above is only to absolutely prove preferred embodiment that is of the invention and being lifted, protection model of the invention
It encloses without being limited thereto.Those skilled in the art's made equivalent substitute or transformation on the basis of the present invention, in the present invention
Protection scope within.Protection scope of the present invention is subject to claims.
Claims (9)
1. a kind of magnetic field compensation system of the radiotherapy system of guided by magnetic resonance, the radiotherapy system include MR imaging apparatus and
Radiotheraphy device, the MR imaging apparatus include main magnet, and the radiotheraphy device includes radiation head, are set inside the radiation head
Be equipped with grating blade and drive the motor of the grating blade, characterized in that the magnetic field compensation system include compensation control device,
Permanent magnet is compensated, and the magnetic field strength test device and position sensor that are connected with motor, the compensation control device
For controlling the movement of compensation permanent magnet.
2. the magnetic field compensation system of the radiotherapy system of guided by magnetic resonance as described in claim 1, characterized in that the magnetic resonance
Imaging device further includes base, and the main magnet has been rotatably coupled on the base, and the radiotheraphy device further includes bracket,
The radiation head is fixed on the bracket, the bracket is pivotably connected in the main magnet.
3. the magnetic field compensation system of the radiotherapy system of guided by magnetic resonance as claimed in claim 2, characterized in that the bracket phase
Swing angle to the main magnet is -20 °~20 °.
4. the magnetic field compensation system of the radiotherapy system of guided by magnetic resonance as claimed in claim 2, characterized in that the bracket and
The main magnet is hinged.
5. the magnetic field compensation system of the radiotherapy system of guided by magnetic resonance as claimed in claim 2, characterized in that on the bracket
It is connected with the encoder for detecting the bracket displacement.
6. the magnetic field compensation system of the radiotherapy system of guided by magnetic resonance as described in claim 1, characterized in that the position passes
Magnetic shield is connected on sensor.
7. the magnetic field compensation system of the radiotherapy system of guided by magnetic resonance as claimed in claim 6, characterized in that the magnetic protection
Cover is in sphere shape.
8. the magnetic field compensation system of the radiotherapy system of guided by magnetic resonance as described in claim 1, characterized in that the radiation head
In cone.
9. a kind of field compensation method of the radiotherapy system of guided by magnetic resonance, the radiotherapy system include MR imaging apparatus and
Radiotheraphy device, the MR imaging apparatus include main magnet, and the radiotheraphy device includes radiation head, are set inside the radiation head
It is equipped with grating blade and drives the motor of the grating blade, characterized in that define based on magnetic field caused by the main magnet
Magnetic field, compensation permanent magnet generate magnetic field be compensation magnetic field, the field compensation method the following steps are included:
1) magnetic induction intensity of the detection motor position and motor in main field；
2) magnetic induction intensity and motor position according to motor in main field, calculate compensation permanent magnet with respect to motor preset away from
From so that magnetic induction of the motor in compensation magnetic field is strong between compensation permanent magnet and motor after the pre-determined distance
It spends identical with magnetic induction intensity of the motor in main field；
And magnetic induction intensity direction of the motor in main field is determined according to the Distribution of Magnetic Field of motor position and main field；
3) compensation permanent magnet is moved to motor at a distance of the position of the pre-determined distance, and makes motor in compensation magnetic field
The magnetic induction intensity of magnetic induction intensity direction and the motor in main field is contrary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811645993.2A CN109847196B (en) | 2018-12-29 | 2018-12-29 | Magnetic field compensation system and method for a magnetic resonance guided radiotherapy system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811645993.2A CN109847196B (en) | 2018-12-29 | 2018-12-29 | Magnetic field compensation system and method for a magnetic resonance guided radiotherapy system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109847196A true CN109847196A (en) | 2019-06-07 |
| CN109847196B CN109847196B (en) | 2024-07-19 |
Family
ID=66893537
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811645993.2A Active CN109847196B (en) | 2018-12-29 | 2018-12-29 | Magnetic field compensation system and method for a magnetic resonance guided radiotherapy system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109847196B (en) |
Citations (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5955881A (en) * | 1994-10-18 | 1999-09-21 | Cts Corporation | Linkage position sensor having a magnet with two ramped sections for providing variable magnetic field |
| CN1238934A (en) * | 1998-06-15 | 1999-12-22 | 通用电器横河医药系统株式会社 | MRI vertical magnet apparatus and MRI apparatus |
| JP2002143126A (en) * | 2000-11-15 | 2002-05-21 | Hitachi Medical Corp | Magnet device and magnetic resonance imaging equipment |
| US6396268B1 (en) * | 2000-10-02 | 2002-05-28 | Ge Medical Systems Global Technology Company, Llc | Magnetic resonance imaging device having magnetic field disturbance compensation |
| US20070244388A1 (en) * | 2004-12-17 | 2007-10-18 | Ryoji Sato | Position Detection System, Guidance System, Position Detection Method, Medical Device, and Medical Magnetic-Induction and Position-Detection System |
| WO2007131503A2 (en) * | 2006-05-16 | 2007-11-22 | Triple Sensor Technologies Gmbh | Arrangement for non-contact defined movement of at least one magnetic body |
| KR20100028250A (en) * | 2008-09-04 | 2010-03-12 | 한양대학교 산학협력단 | Motor for magnetic resonance equipment and control method of the same |
| WO2010142760A2 (en) * | 2009-06-10 | 2010-12-16 | Sirona Dental Systems Gmbh | Sensor and magnetic field unit for use in a magnetic resonance tomography system or in a magnetic resonance spectroscopy system |
| US20130225974A1 (en) * | 2010-11-09 | 2013-08-29 | Koninklijke Philips Electronics N.V. | Magnetic resonance imaging system and radiotherapy apparatus with an adjustable axis of rotation |
| US20140084926A1 (en) * | 2011-05-31 | 2014-03-27 | Koninklijke Philips N.V. | Correcting the static magnetic field of an mri radiotherapy apparatus |
| DE102013210237A1 (en) * | 2013-06-03 | 2014-12-04 | Siemens Aktiengesellschaft | Method for operating a mobile magnetic resonance tomography system |
| CN104667427A (en) * | 2013-11-29 | 2015-06-03 | 上海联影医疗科技有限公司 | Leaf position monitoring device for multi-leaf collimator, multi-leaf collimator and radiology treatment equipment |
| WO2015197475A1 (en) * | 2014-06-27 | 2015-12-30 | Koninklijke Philips N.V. | Charged particle beam therapy and magnetic resonance imaging |
| CN204972723U (en) * | 2015-09-10 | 2016-01-20 | 上海联影医疗科技有限公司 | Multi leaf collimator device |
| CN105842638A (en) * | 2015-01-22 | 2016-08-10 | 布鲁克碧奥斯平Mri有限公司 | MPI scanner with moving permanent magnet elements |
| CN105992553A (en) * | 2013-09-25 | 2016-10-05 | 三星电子株式会社 | Magnetic resonance imaging apparatus |
| CN107374572A (en) * | 2017-07-05 | 2017-11-24 | 上海楠青自动化科技有限公司 | A kind of magnet Universal rotary device to be navigated in vitro for capsule endoscopic |
| CN209630462U (en) * | 2018-12-29 | 2019-11-15 | 佛山瑞加图医疗科技有限公司 | The magnetic field compensation system of the radiotherapy system of guided by magnetic resonance |
-
2018
- 2018-12-29 CN CN201811645993.2A patent/CN109847196B/en active Active
Patent Citations (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5955881A (en) * | 1994-10-18 | 1999-09-21 | Cts Corporation | Linkage position sensor having a magnet with two ramped sections for providing variable magnetic field |
| CN1238934A (en) * | 1998-06-15 | 1999-12-22 | 通用电器横河医药系统株式会社 | MRI vertical magnet apparatus and MRI apparatus |
| US6396268B1 (en) * | 2000-10-02 | 2002-05-28 | Ge Medical Systems Global Technology Company, Llc | Magnetic resonance imaging device having magnetic field disturbance compensation |
| JP2002143126A (en) * | 2000-11-15 | 2002-05-21 | Hitachi Medical Corp | Magnet device and magnetic resonance imaging equipment |
| US20070244388A1 (en) * | 2004-12-17 | 2007-10-18 | Ryoji Sato | Position Detection System, Guidance System, Position Detection Method, Medical Device, and Medical Magnetic-Induction and Position-Detection System |
| WO2007131503A2 (en) * | 2006-05-16 | 2007-11-22 | Triple Sensor Technologies Gmbh | Arrangement for non-contact defined movement of at least one magnetic body |
| KR20100028250A (en) * | 2008-09-04 | 2010-03-12 | 한양대학교 산학협력단 | Motor for magnetic resonance equipment and control method of the same |
| WO2010142760A2 (en) * | 2009-06-10 | 2010-12-16 | Sirona Dental Systems Gmbh | Sensor and magnetic field unit for use in a magnetic resonance tomography system or in a magnetic resonance spectroscopy system |
| US20130225974A1 (en) * | 2010-11-09 | 2013-08-29 | Koninklijke Philips Electronics N.V. | Magnetic resonance imaging system and radiotherapy apparatus with an adjustable axis of rotation |
| US20140084926A1 (en) * | 2011-05-31 | 2014-03-27 | Koninklijke Philips N.V. | Correcting the static magnetic field of an mri radiotherapy apparatus |
| DE102013210237A1 (en) * | 2013-06-03 | 2014-12-04 | Siemens Aktiengesellschaft | Method for operating a mobile magnetic resonance tomography system |
| CN105992553A (en) * | 2013-09-25 | 2016-10-05 | 三星电子株式会社 | Magnetic resonance imaging apparatus |
| CN104667427A (en) * | 2013-11-29 | 2015-06-03 | 上海联影医疗科技有限公司 | Leaf position monitoring device for multi-leaf collimator, multi-leaf collimator and radiology treatment equipment |
| WO2015197475A1 (en) * | 2014-06-27 | 2015-12-30 | Koninklijke Philips N.V. | Charged particle beam therapy and magnetic resonance imaging |
| US20170120075A1 (en) * | 2014-06-27 | 2017-05-04 | Koninklijke Philips N.V. | Charged particle beam therapy and magnetic resonance imaging |
| CN105842638A (en) * | 2015-01-22 | 2016-08-10 | 布鲁克碧奥斯平Mri有限公司 | MPI scanner with moving permanent magnet elements |
| CN204972723U (en) * | 2015-09-10 | 2016-01-20 | 上海联影医疗科技有限公司 | Multi leaf collimator device |
| CN107374572A (en) * | 2017-07-05 | 2017-11-24 | 上海楠青自动化科技有限公司 | A kind of magnet Universal rotary device to be navigated in vitro for capsule endoscopic |
| CN209630462U (en) * | 2018-12-29 | 2019-11-15 | 佛山瑞加图医疗科技有限公司 | The magnetic field compensation system of the radiotherapy system of guided by magnetic resonance |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109847196B (en) | 2024-07-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Green et al. | First clinical implementation of real‐time, real anatomy tracking and radiation beam control | |
| JP5469675B2 (en) | Treatment device | |
| CN108310681B (en) | Medical linear accelerator and control method thereof | |
| CA2465511C (en) | Method and device for delivering radiotherapy | |
| CN110234275A (en) | For emitting the system of guiding high-energy photon transmission | |
| EP3015133B1 (en) | Radiotherapy apparatus | |
| AU2002353904A1 (en) | Method and device for delivering radiotherapy | |
| CA2449967A1 (en) | Guided radiation therapy system | |
| CA2768367A1 (en) | Multiple axes scanning system and method for measuring radiation from a radiation source | |
| WO2007045075A1 (en) | Real-time dose reconstruction using dynamic simulation and image guided adaptive radiotherapy | |
| US11141606B2 (en) | Magnetic resonance guided stereotactic radiosurgery | |
| CN107510898A (en) | Light field, Beam's eye view device and the verification method of Medical Devices | |
| JP2014166245A (en) | Treatment planning device, planning treatment system, treatment plan generation method and program | |
| CN105413067A (en) | Portal imaging during radiotherapy | |
| CN103099630A (en) | Locating method of target organ in tumor radiotherapy | |
| CN209630462U (en) | The magnetic field compensation system of the radiotherapy system of guided by magnetic resonance | |
| KR20160059528A (en) | Magnetic Resonance Imaging Guided Radiotherpy System | |
| CN107320858B (en) | Dual-energy accelerator treatment device and control method thereof | |
| CN108969911A (en) | A kind of MRI radiotherapy system with the double-deck magnetizer | |
| CN109806508B (en) | Method and system for checking alignment of radiation therapy system components | |
| CN209630461U (en) | The magnetic field compensation system of radiotherapy system for guided by magnetic resonance | |
| CN109847196A (en) | The magnetic field compensation system and method for the radiotherapy system of guided by magnetic resonance | |
| CA2920581A1 (en) | Peripheral tumour treatment | |
| KR101872226B1 (en) | Calibration unit, apparatus for radiotherapy and calibration method thereof | |
| CN107281653A (en) | Mri guided radiation therapy apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |