CN108969910A - A kind of integrated radiotherapy system of MRI image guidance - Google Patents
A kind of integrated radiotherapy system of MRI image guidance Download PDFInfo
- Publication number
- CN108969910A CN108969910A CN201810826908.6A CN201810826908A CN108969910A CN 108969910 A CN108969910 A CN 108969910A CN 201810826908 A CN201810826908 A CN 201810826908A CN 108969910 A CN108969910 A CN 108969910A
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- China
- Prior art keywords
- frame
- treatment head
- wall
- radiotherapy system
- guide rail
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Classifications
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- 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
- A61N5/1048—Monitoring, verifying, controlling systems and methods
- A61N5/1064—Monitoring, verifying, controlling systems and methods for adjusting radiation treatment in response to monitoring
- A61N5/1069—Target adjustment, e.g. moving the patient support
-
- 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
- A61N2005/1092—Details
- A61N2005/1094—Shielding, protecting against radiation
-
- 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
- A61N2005/1092—Details
- A61N2005/1097—Means for immobilizing the patient
Abstract
The present invention provides a kind of integrated radiotherapy systems of MRI image guidance comprising: frame, including upper wall, lower wall and at least one curved wall, the interior package magnetizer of the frame or the frame are made of magnetic conductor；Guide rail is set on the curved wall；Treatment head can be moved up and down along the guide rail；Magnetic pole is symmetrically disposed on the upper wall and lower wall；Therapeutic bed is set between the magnetic pole；Control module forms realtime graphic by the frame and pole pair focus imaging, drives the treatment head along the guide rail activity according to the realtime graphic, so that the accurate irradiated lesion of the treatment head.The present invention substantially increases the accuracy and therapeutic effect of radiotherapy.
Description
Technical field
The present invention relates to the integrated radiotherapy systems that field of medical device more particularly to a kind of MRI image guide.
Background technique
The mode of existing radiotherapy generally positions lesion first with x-ray imaging equipment, then makes
Lesion is irradiated with radiotherapy head, to achieve the purpose that treatment.However this therapeutic scheme draws using X image
The first positioning led, then the method irradiated, X image-guided imaging are typically only plane, and have biggish additional image dosage.
If carrying out image positioning and irradiation treatment, the normal device of perilesional to lesion using aforementioned X image-guided scheme
Official also receives the irradiation of very large dosage of X image rays, so that patient be made to receive unnecessary roentgen dose X.
In order to improve the imaging precision and imaging level of image-guided system, reduce additional unnecessary of image-guided system
Imaging dosage, the present invention is specifically proposed.
Summary of the invention
The purpose of the present invention is to provide a kind of integrated radiotherapy system of MRI image guidance, treatment head can be
It is treated under MRI image guidance, to greatly improve treatment precision.And avoid X imaging device bring additional radiation dosage.
Treatment head in this system can be according to MRI image synchronous adjustment irradiating angle and orientation, to guarantee the accurate irradiation to lesion.Tool
Body he, this system includes frame, guide rail, treatment head, magnetic pole, therapeutic bed and control module.
The frame includes upper wall, lower wall and at least one curved wall, package magnetizer or the frame in the frame
Frame is made of magnetic conductor；
The guide rail is set on the curved wall, and shape and the curved wall are adapted；
The treatment head can be moved up and down along the guide rail；
The magnetic pole is symmetrically disposed on the upper wall and lower wall；
The therapeutic bed is set between the magnetic pole；
The control module is by the frame and pole pair focus imaging, to form realtime graphic, according to described real-time
Treatment head described in image-driven is along the guide rail activity, so that the accurate irradiated lesion of the treatment head.
Above-mentioned radiotherapy system, wherein the treatment head can also carry out left and right/upper and lower swing with respect to itself, with
Further adjust irradiating angle.
Above-mentioned radiotherapy system, wherein the control module is over the course for the treatment of always according to the position of the lesion
Described treatment head of control or so/swing up and down is set, so that the treatment head accurately irradiates the lesion always.
Above-mentioned radiotherapy system, wherein the frame can also include one side wall, be set to and the curved wall
Opposite side.
Above-mentioned radiotherapy system, wherein the therapeutic bed includes a multi-dimensional movement device, for driving the treatment
Bed carries out multi-dimensional movement.
Above-mentioned radiotherapy system, wherein further include a protective cover being set in the therapeutic bed, controlled with protection
The object for the treatment of is not collided with.
Above-mentioned radiotherapy system, wherein the protective cover sheet, and can be with inside protective cover as rigid material
Equipped with flexible material, to prevent from colliding with.
On the basis of existing technology, technical solution of the present invention be all utilized in the overall process of radiotherapy medicine at
As equipment carries out tracking to lesion and not additional imaging dosage.The present invention has pulled open treatment head and magnetic pole using curved wall
The distance between, reduce influencing each other between the two, imaging is synchronous with radiotherapy to be carried out to realize, and treatment head is made to exist
Treatment angle can be adjusted according to the movement of lesion in real time in radiation therapy process, to substantially increase the accurate of radiotherapy
Degree and therapeutic effect.
Detailed description of the invention
Fig. 1 is perspective view of an embodiment of the present invention；
Fig. 2 is the side view of one embodiment of the invention；
Fig. 3 is the schematic diagram of internal structure of one embodiment of the invention；
Fig. 4 is the perspective view of further embodiment of this invention；
Fig. 5 is the side view of further embodiment of this invention；
Fig. 6 is the schematic diagram of internal structure of further embodiment of this invention.
Specific embodiment
To be clearer and more comprehensible the purpose of the present invention, feature, a specific embodiment of the invention is made with reference to the accompanying drawing
Further instruction.However, the present invention can be realized with different forms, it should not be to be confined to the embodiment described.And
In the case where not conflicting, the features in the embodiments and the embodiments of the present application allow to be combined with each other or replace.In conjunction with below
Illustrate, advantages and features of the invention will become apparent from.
It should be noted that attached drawing is all made of very simplified form and using non-accurate ratio, only to convenient, bright
The purpose of the embodiment of the present invention is aided in illustrating clearly.
MRI (Magnetic resonance imaging Nuclear Magnetic Resonance Imaging) technology is a mature skill
Art, since the application of the 1980's, it is developed at a terrific speed.Since nmr phenomena directly reflects water in human body
Position in molecule in the ambient conditions and molecular structure of proton can provide biochemical pathological state and letter on molecular level
Breath, diagnosis or even extreme early so as to which the variations such as the intracorporal oedema of people, infection, inflammation, denaturation are carried out with early stage diagnose.
This is that the image technologies such as x-ray, CT, B ultrasound are incomparable.Meanwhile nmr phenomena is big to the contrast of soft tissue, thus have
High resolution very can explicitly determine the extent of disease such as inflammation, oedema, tumour, determine that range of operation provides to surgery
Very reliable foundation.It, can multiple checks (multiple location, repeatedly check) since it does not have any radiolesion to human body.MRI
The nmr phenomena that contained proton occurs in magnetic field in human body is exactly utilized, collects MR signal, then pass through space encoding
Technological maheup image, diagnoses for doctor.But MRI technique is also applied only for diagnosing at this stage, also few to be applied
It is assisted in treatment.
The present invention provides a kind of radiotherapy systems, and MRI technique is combined with radiotherapy, utilizes MRI technique
Sharp picture is provided for the range of exposures for the treatment of head, so that treatment head can accurate irradiated lesion.
As shown in Figure 1-3, the radiotherapy system includes frame 7, guide rail 4, treatment head 3, magnetic pole 2,5 and of therapeutic bed
Control module (not shown).
Frame 7 is the support construction of whole system comprising upper wall, lower wall and at least one curved wall 71.In frame 7
Package magnetizer or frame 7 are directly made of magnetizer.Due to there are magnetic field, existing more between magnetic pole 2 between the 2 of magnetic pole
The attraction of concentration, therefore, frame 7 must have enough structural strengths first, to resist the attraction.Secondly, by
In the magnetic field, to surrounding magnetic bodies, there is also attractions, and treatment head 3 is often by iron or this kind of magnetic material of steel
It is made, therefore treatment head 3 need to be mounted on the lesser position of magnetic attraction.By the research of inventor, in the one side wall of frame 7
It is set as curved wall 71, since curved wall 71 is a part of frame 7, the material for constituting curved wall 71 is also magnetic conduction
Body, thus passed through from magnetizer from the magnetic line of force first choice that magnetic pole issues, rather than in space (non-conductor that space is magnetic)
Walk shortest path.Therefore, in the local space that curved wall 71 is surrounded, magnetic field strength weakens significantly, and treatment head 3 is set to
Herein by by magnetic field influenced to be ignored.
Further, the curved wall 71 is the case where chord length fixes (spacing for being equivalent to upper wall and lower wall is fixed)
Under, the longer the better for arc length.In this case, the space surrounded by curved wall 71 is larger (longer in other words), passes through space
Influence of the magnetic field given off to treatment head 3 is smaller.
As shown in Figure 1, guide rail 3 is set on the curved wall, shape and the curved wall are adapted, so as to control
Treating head 3 can move up and down to find optimal irradiating angle along guide rail 4.
Magnetic pole 2 is symmetrically disposed on the upper wall and lower wall.
Therapeutic bed 5 is set between 2 magnetic poles 2, and therapeutic bed 5 includes a multi-dimensional movement device (not shown), is used
In the driving therapeutic bed multi-dimensional movement.Since the imaging effect of the central point peripheral region between two magnetic poles is best, answer
On the central point that lesion center is adjusted to described, to obtain optimal therapeutic effect.By the multi-dimensional movement device,
Therapeutic bed 5 can in the horizontal direction or vertical direction is mobile, to achieve the purpose that for lesion to be adjusted to the central point.
Control module (not shown) includes being imaged and controlling two functions.The control module is right by frame 7 and magnetic pole 2
Focus imaging, to form realtime graphic.The realtime graphic is used for the movement of guiding treatment head 3.
Radiotherapy is general, the effective treatment means of one kind for treating tumour at this stage, is had particularly with initial tumor
Relatively good therapeutic effect.But be located at thoracic cavity and intraperitoneal tumour is influenced by the physiological activity (such as breathing or heartbeat) of people
And it can not be always maintained at static.The ray that this case will lead to radiotherapy cannot be directed at tumour to be treated constantly, very
The normal tissue on tumour periphery may be extremely irradiated to beyond range of tumor.Thus the means of existing radiotherapy are to " mobile
" therapeutic efficiency of tumour is not high, and there is the risk for endangering normal tissue.
Further, in order to which the target for irradiating radiotherapy is the target that need to be treated always, treatment head 3 can also relatively certainly
Body carries out left and right/upper and lower swing, further to adjust irradiating angle.For example, treatment head 3 is using its bottom centre's point as axle center,
It is swung, then treatment head 3 is on the basis of having been attached to curved wall 71, moreover it is possible to be finely adjusted to irradiating angle.The control
The lesion current location that molding root tuber is pointed out according to realtime graphic further controls treatment head 3 and swings in real time, so that treatment head 3 is protected
Hold accurate irradiated lesion.
In concert with, the multi-dimensional movement device of therapeutic bed 5 can also unilateral side raise therapeutic bed 5, to make lesion itself
Also it can change the angle towards treatment head 3 in a small range.The two (adjustment therapeutic bed 5 and adjustment treatment head 3) combines can be more
Flexibly, radiating irradiation is more accurately carried out.
It as Figure 4-Figure 6, can also include one side wall in frame 7 to keep the structure of the frame in the present invention more stable
72, the side wall 72 is located at the opposite side (remaining structure with identical above, do not repeat herein) of curved wall 71.To which frame 7 is more
Stablize, bigger attraction can be resisted, the pole pair focus imaging of more High-Field can be selected.
Further, as shown in Figure 3 and Figure 6, radiotherapy system of the present invention further includes a protective cover 6.In order to
It uses the MR compared with small magnetic field intensity to scan source as far as possible, causes radiotherapy system inner space surplus smaller.It is described
Protective cover 6 surrounds treatment object in use state, and the treatment object is protected not collide with this system.More preferably, the guarantor
Shield 6 uses rigid material, and can also be coated with flexible material inside the protective cover 6.
Above-mentioned radiotherapy system is using realtime graphic as foundation, in real time control treatment accurate by a control module
Head is mobile and swings, to realize the purpose of lesion localization and real-time tracking, has achieved the purpose that accurately to irradiate in real time, mention
The high accuracy and effect of radiotherapy, avoids the damage of normal tissue.
Obviously, those skilled in the art can carry out various modification and variations without departing from spirit of the invention to invention
And range.If in this way, these modifications and changes of the present invention belong to the claims in the present invention and its equivalent technologies range it
Interior, then the present invention is also intended to include these modifications and variations.
Claims (5)
1. a kind of integrated radiotherapy system of MRI image guidance characterized by comprising
Frame, including upper wall, lower wall and at least one curved wall, the interior package magnetizer of the frame or the frame are by magnetic conduction
Body is constituted；
Guide rail is set on the curved wall；
Treatment head can be moved up and down along the guide rail；
Magnetic pole is symmetrically disposed on the upper wall and lower wall；
Therapeutic bed is set between the magnetic pole；
Control module, forms realtime graphic by the frame and pole pair focus imaging, drives institute according to the realtime graphic
Treatment head is stated along the guide rail activity, so that the accurate irradiated lesion of the treatment head.
2. radiotherapy system as described in claim 1, which is characterized in that the treatment head is also swingable, further to adjust
Whole irradiating angle.
3. radiotherapy system as claimed in claim 2, which is characterized in that control module root always over the course for the treatment of
Treatment head described in position control according to the lesion or so/swing up and down, so that the treatment head accurately irradiates the disease always
Stove.
4. radiotherapy system as described in claim 1, which is characterized in that the frame further includes one side wall, be set to
The opposite side of the curved wall.
5. radiotherapy system as described in claim 1, which is characterized in that the therapeutic bed includes a multi-dimensional movement device,
For driving the therapeutic bed to carry out multi-dimensional movement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810826908.6A CN108969910A (en) | 2018-07-25 | 2018-07-25 | A kind of integrated radiotherapy system of MRI image guidance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810826908.6A CN108969910A (en) | 2018-07-25 | 2018-07-25 | A kind of integrated radiotherapy system of MRI image guidance |
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| Publication Number | Publication Date |
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| CN108969910A true CN108969910A (en) | 2018-12-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810826908.6A Pending CN108969910A (en) | 2018-07-25 | 2018-07-25 | A kind of integrated radiotherapy system of MRI image guidance |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109771849A (en) * | 2019-01-30 | 2019-05-21 | 张文山 | The non-equal centers of one kind rotate intensity ajustable radiation therapy apparatus |
| CN109771848A (en) * | 2019-01-30 | 2019-05-21 | 张文山 | A kind for the treatment of system for realizing noncoplanar irradiation |
| CN110465003A (en) * | 2019-07-24 | 2019-11-19 | 太丛信息科技（上海）有限公司 | The radiotherapy unit of self-shileding |
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| EP2259082B1 (en) * | 2009-05-29 | 2012-07-11 | Esaote S.p.A. | MRI apparatus comprising a superconducting permanent magnet |
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| CN205885984U (en) * | 2016-06-15 | 2017-01-18 | 宁波穿山甲机电有限公司 | Special magnetic resonance gamma knife integration system of head |
| CN108066903A (en) * | 2017-12-28 | 2018-05-25 | 宋世鹏 | A kind of suspension type radiotherapy system |
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Patent Citations (5)
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| EP2259082B1 (en) * | 2009-05-29 | 2012-07-11 | Esaote S.p.A. | MRI apparatus comprising a superconducting permanent magnet |
| CN102430206A (en) * | 2010-09-29 | 2012-05-02 | 上海世鹏实验室科技发展有限公司 | Therapy system integrating images and radiotherapy |
| KR20150049316A (en) * | 2013-10-30 | 2015-05-08 | 한국전기연구원 | Therapy system using magnetic resonance imaging guided linear accelerator and method for controlling the same |
| CN205885984U (en) * | 2016-06-15 | 2017-01-18 | 宁波穿山甲机电有限公司 | Special magnetic resonance gamma knife integration system of head |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109771849A (en) * | 2019-01-30 | 2019-05-21 | 张文山 | The non-equal centers of one kind rotate intensity ajustable radiation therapy apparatus |
| CN109771848A (en) * | 2019-01-30 | 2019-05-21 | 张文山 | A kind for the treatment of system for realizing noncoplanar irradiation |
| CN110465003A (en) * | 2019-07-24 | 2019-11-19 | 太丛信息科技（上海）有限公司 | The radiotherapy unit of self-shileding |
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Application publication date: 20181211 |
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