CN107213556B - Proton treatment and detection frame integrated mechanism based on MRI - Google Patents
Proton treatment and detection frame integrated mechanism based on MRI Download PDFInfo
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- CN107213556B CN107213556B CN201710269360.5A CN201710269360A CN107213556B CN 107213556 B CN107213556 B CN 107213556B CN 201710269360 A CN201710269360 A CN 201710269360A CN 107213556 B CN107213556 B CN 107213556B
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- proton
- treatment
- electrode plate
- mri
- proton treatment
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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
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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
- A61N5/1064—Monitoring, verifying, controlling systems and methods for adjusting radiation treatment in response to monitoring
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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
- 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]
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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
- 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
Abstract
The invention discloses a proton treatment and detection rack integrated mechanism based on MRI, which comprises a proton medical system rotating rack, a proton treatment head, an MRI device, an electrode plate, a sickbed and a supporting structure. The invention applies an electric field with a certain size which is vertical to the beam direction and the magnetic field direction by the electrode plate to offset the Lorentz force borne by the proton, thereby enabling the offset of the proton beam to be zero, enabling the MRI device to carry out on-line imaging on the focus of the human body and simultaneously assisting the treatment head to carry out treatment from different angles, realizing positioning on the tumor focus of a patient while carrying out proton treatment and simultaneously improving the treatment positioning precision of the proton.
Description
Technical Field
The invention relates to the field of nuclear medical equipment, in particular to a proton treatment and detection rack integrated mechanism based on MRI.
Background
Proton therapy is a method of irradiating tumor tissue with protons with a certain energy to achieve the purpose of treatment. The existing proton treatment device realizes quick X-ray scanning before treatment through CT to position tumor focus, but the imaging technology has lower resolution, cannot perform online imaging when the treatment is performed because the positioning of the tumor tissue of a patient is not accurate enough, and has certain radioactivity.
MRI has become well established as a clinical lesion location application, is free of ionizing radiation, has better soft tissue resolution and enables full-scale online imaging during radiotherapy, and is currently the best choice for clinical medical imaging. However, when MRI is used in proton therapy, the main magnetic field may affect the dose distribution of the proton beam, and may damage normal cells, which affects the accuracy and safety of the therapy, so it is very important to solve the effect of the magnetic field of the MRI apparatus on the proton beam.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an MRI-based proton treatment and detection rack integrated mechanism so as to realize a proton treatment system for on-line imaging through MRI and simultaneously solve the influence of an MRI magnetic field on the proton beam dose distribution in treatment.
The invention is realized by the following technical scheme:
an MRI-based proton treatment and detection gantry integrated mechanism, comprising: the proton treatment device comprises a proton treatment system rotating rack, an electrode plate, a proton treatment head, an MRI device, a sickbed and a supporting structure, wherein the electrode plate comprises a positive electrode plate and a negative electrode plate which are respectively and symmetrically arranged at two sides in the proton treatment system rotating rack; meanwhile, an electric field with a certain size and a direction perpendicular to the beam direction and the magnetic field direction is formed between the positive electrode plate and the negative electrode plate, and the Lorentz force of the magnetic field on protons is counteracted by using electric field force.
The proton treatment and detection rack integrated mechanism based on MRI is characterized in that: the middle opening part of the MRI device is provided with enough space for the proton treatment head to emit proton beams to carry out irradiation treatment on the human body.
The proton treatment and detection rack integrated mechanism based on MRI is characterized in that: the electrode plate is fixed on the supporting structure.
The proton treatment and detection rack integrated mechanism based on MRI is characterized in that: the support structure is insulated.
The invention has the advantages that:
the invention applies an electric field with a certain size which is vertical to the beam direction and the magnetic field direction by the electrode plate to offset the Lorentz force borne by the proton, thereby enabling the offset of the proton beam to be zero, enabling the MRI device to carry out on-line imaging on the focus of the human body and simultaneously assisting the treatment head to carry out treatment from different angles, realizing positioning on the tumor focus of a patient while carrying out proton treatment and simultaneously improving the treatment positioning precision of the proton.
Drawings
Fig. 1 is a view showing an external structure of the present invention.
Fig. 2 is a cross-sectional view of the present invention.
In the figure: 1-a proton medical system rotating gantry; 2-an electrode plate; 3-proton therapy head; 4-an MRI apparatus; 5-a hospital bed; 6-supporting the structure.
Detailed Description
The embodiments of the present invention will be described in detail below with reference to the accompanying drawings: the present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.
As shown in fig. 1 and 2, an MRI-based proton treatment and detection rack integrated mechanism includes a proton medical system rotating rack 1, an electrode plate 2, a proton treatment head 3, an MRI device 4, a hospital bed 5, and a support structure 6, wherein the electrode plate 2 includes positive and negative electrode plates, the positive and negative electrode plates are respectively and symmetrically installed at two sides inside the proton medical system rotating rack 1, the proton treatment head 3 is hoisted above the middle part inside the proton medical system rack 1, the support structure 6 is located right below the proton medical system rotating rack 1, the MRI device 4 is installed on the support structure 6, a middle opening of the MRI device 4 provides a space for a proton treatment beam to pass through, the hospital bed 5 can enter and exit from the middle opening of the MRI device 4, the MRI device 4 is used for online positioning of a tumor focus of a patient, and the proton treatment system is guided to treat the patient; meanwhile, an electric field with a certain size and a direction perpendicular to the beam direction and the magnetic field direction is formed between the positive electrode plate and the negative electrode plate, and the Lorentz force of the magnetic field on protons is counteracted by using electric field force.
Enough space is left in the middle opening part of the MRI device 4 for the proton treatment head 3 to emit proton beams to carry out irradiation treatment on the human body. The electrode plate 2 is fixed to a support structure 6. The support structure 6 is insulating.
Claims (1)
1. An MRI-based proton treatment and detection gantry integrated mechanism, comprising: the proton treatment device comprises a proton treatment system rotating rack, an electrode plate, a proton treatment head, an MRI device, a sickbed and a supporting structure, wherein the electrode plate comprises a positive electrode plate and a negative electrode plate which are respectively and symmetrically arranged at two sides in the proton treatment system rotating rack; meanwhile, an electric field with a certain size and a direction perpendicular to the beam direction and the magnetic field direction is formed between the positive electrode plate and the negative electrode plate, and the Lorentz force of the magnetic field on protons is counteracted by using electric field force;
enough space is left in the middle opening part of the MRI device for proton treatment hair to emit proton beams to irradiate a human body for treatment;
the electrode plate is fixed on the supporting structure;
the support structure is insulated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710269360.5A CN107213556B (en) | 2017-04-24 | 2017-04-24 | Proton treatment and detection frame integrated mechanism based on MRI |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710269360.5A CN107213556B (en) | 2017-04-24 | 2017-04-24 | Proton treatment and detection frame integrated mechanism based on MRI |
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| Publication Number | Publication Date |
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| CN107213556A CN107213556A (en) | 2017-09-29 |
| CN107213556B true CN107213556B (en) | 2020-02-18 |
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| CN201710269360.5A Active CN107213556B (en) | 2017-04-24 | 2017-04-24 | Proton treatment and detection frame integrated mechanism based on MRI |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102245265A (en) * | 2008-12-12 | 2011-11-16 | 皇家飞利浦电子股份有限公司 | Therapeutic apparatus |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8975602B2 (en) * | 2012-10-26 | 2015-03-10 | ProNova Solutions, LLC | Active floor for proton therapy |
| CN106659422A (en) * | 2014-07-17 | 2017-05-10 | 埃尔瓦有限公司 | Artificially structured unit cells providing localized b1 magnetic fields for mri and nmr devices |
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- 2017-04-24 CN CN201710269360.5A patent/CN107213556B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102245265A (en) * | 2008-12-12 | 2011-11-16 | 皇家飞利浦电子股份有限公司 | Therapeutic apparatus |
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| CN107213556A (en) | 2017-09-29 |
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