WO2015015579A1 - Dispositif d'irradiation par un faisceau de particules chargées - Google Patents

Dispositif d'irradiation par un faisceau de particules chargées Download PDF

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Publication number
WO2015015579A1
WO2015015579A1 PCT/JP2013/070683 JP2013070683W WO2015015579A1 WO 2015015579 A1 WO2015015579 A1 WO 2015015579A1 JP 2013070683 W JP2013070683 W JP 2013070683W WO 2015015579 A1 WO2015015579 A1 WO 2015015579A1
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WO
WIPO (PCT)
Prior art keywords
electromagnet
scanning
charged particle
particle beam
irradiation
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PCT/JP2013/070683
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English (en)
Japanese (ja)
Inventor
貴啓 山田
文章 野田
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株式会社日立製作所
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Priority to PCT/JP2013/070683 priority Critical patent/WO2015015579A1/fr
Publication of WO2015015579A1 publication Critical patent/WO2015015579A1/fr

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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
    • A61N5/1042—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy with spatial modulation of the radiation beam within the treatment head
    • A61N5/1043—Scanning the radiation beam, e.g. spot scanning or raster scanning
    • 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

Definitions

  • the present invention relates to a charged particle beam irradiation apparatus, and more particularly to a charged particle beam irradiation apparatus suitable for application to a particle beam therapy apparatus that irradiates and treats an affected area with a charged particle beam such as protons and carbon ions.
  • Radiotherapy that is minimally invasive, has less burden on the body, and can maintain a high quality of life after treatment is attracting attention.
  • particle beam therapy using charged particle beams such as protons and carbon ions accelerated by an accelerator is particularly promising because of excellent dose concentration on the affected area.
  • Patent Documents 1 and 2 are inventions in which a scanning electromagnet is disposed in the beam scanning.
  • a beam transport system that prevents the enlargement of the beam transport system while securing the distance between the scan magnet and the irradiation surface by arranging two scanning electromagnets upstream of the deflection magnet at the most downstream of the beam transport system. It is described in Non-Patent Document 1.
  • the shape of the magnetic field region formed by the most downstream deflection electromagnet does not match the shape of the region through which the charged particle beam deflected by the scanning magnet passes, the charged particle beam does not pass through the magnetic field region of the most downstream deflection electromagnet. Nevertheless, what includes a region for generating a magnetic field is required. As a result, there has been a problem that the most downstream deflection electromagnet is increased in size with respect to the desired irradiation field shape.
  • a first that scans the charged particle beam in a first direction along a path that guides the charged particle beam toward an irradiation surface of an irradiation target.
  • the multipolar electromagnet installed so that it passes through the opening, and the multipolar electromagnet according to the excitation amount of the first scanning electromagnet and the excitation amount of the second scanning electromagnet Characterized by comprising a control device for controlling the amount of excitation.
  • charging is performed when a scanning electromagnet is used to scan the inside of the most downstream deflection electromagnet so as to have a circular beam passage region shape E, and a square irradiation field is formed on the irradiation surface by the skew quadrupole electromagnet. It shows the irradiation position of the particle beam.
  • the particle beam therapy system transports the charged particle beam generated from the ion source to the near-speed of light and the synchrotron and the like, and the charged particle beam emitted from the accelerator, and sends the charged particle beam according to the position and shape of the affected part. It consists of a beam transport system that irradiates the patient.
  • the beam transport system includes a deflecting electromagnet that changes the traveling direction of the charged particle beam in order to guide the charged particle beam emitted from the accelerator to the patient.
  • the charged particle beam when a charged particle beam is irradiated in accordance with the shape of an affected part, the charged particle beam may be shaped by expanding the beam diameter with a scatterer and then shaving the peripheral part with a collimator.
  • the irradiation method using a scatterer there are problems such that generation of neutrons cannot be reduced and the degree of coincidence between the affected part shape and the irradiation region cannot be improved. Therefore, as a more accurate irradiation method, there is an increasing market need for a scanning irradiation method in which a charged particle beam having a small diameter is taken out from an accelerator, deflected by an electromagnet, and scanned according to the shape of an affected part.
  • a three-dimensional affected part shape is divided into a plurality of layers in the depth direction, and each layer is further divided two-dimensionally.
  • the energy of the charged particle beam is changed to selectively irradiate each layer, and the charged particle beam to be irradiated is scanned two-dimensionally by an electromagnet in each layer to give a predetermined dose to each irradiation position.
  • Raster scanning is a method of dividing the irradiation position in each layer into discrete irradiation spots and continuously irradiating while moving between irradiation spots, while a method of stopping the irradiation beam while moving between irradiation spots is discrete. This is called spot scanning.
  • a beam transport system that performs scanning irradiation includes a scanning electromagnet that changes a traveling direction of a charged particle beam toward a desired irradiation spot by a magnetic field.
  • the scanning electromagnet is a dipole electromagnet, and at least two scanning electromagnets are necessary for two-dimensional beam scanning.
  • the position where the charged particle beam deflected by the scanning electromagnet is irradiated on the irradiation surface is determined by the distance between the scanning electromagnet and the irradiation surface and the deflection angle by the scanning electromagnet.
  • the irradiation surface refers to a layer scanned by a charged particle beam having a certain energy.
  • the distance between the scanning electromagnet and the irradiation surface is large, the deflection angle by the scanning electromagnet becomes small. Therefore, it is possible to reduce the load on the scanning electromagnet power supply. Instead, the above-mentioned distance is secured. This increases the size of the beam transport system. This is because, in order to secure a sufficient distance between the scanning electromagnet and the irradiation surface, a beam transport system having a scale capable of disposing the scanning electromagnet at a position far from the irradiation surface is required.
  • the scanning electromagnet is installed at a position far from the patient so that a sufficient distance between the scanning electromagnet and the irradiation surface can be secured, and the deflection electromagnet is arranged on the patient side of the scanning electromagnet. That is, there is an idea that the scanning electromagnet is arranged upstream of the final deflection electromagnet. However, when the scanning electromagnet is arranged upstream of the most downstream deflection electromagnet, the charged particle beam deflected by the scanning electromagnet passes through the most downstream deflection electromagnet, so that the beam axis in the region where the charged particle beam passes through the most downstream deflection electromagnet.
  • the shape of the cross section along the line (hereinafter referred to as the beam passing region shape) is substantially the same as the shape of the maximum irradiation field formed on the irradiation surface.
  • the cross-sectional shape hereinafter referred to as the magnetic field generation region shape
  • the magnetic field generation region shape when the cross-sectional shape (hereinafter referred to as the magnetic field generation region shape) along the beam axis of the region where the deflection magnetic field of the most downstream deflection electromagnet is generated is different from the beam passage region shape, the magnetic field is not transmitted. There is a problem in that a region for generating a phenomenon occurs, leading to inhibition of downsizing of the most downstream deflection electromagnet and an increase in cost.
  • FIG. 1 is a conceptual diagram showing the configuration of the charged particle beam irradiation apparatus of the first embodiment.
  • the charged particle beam irradiation apparatus 1 according to the present embodiment is arranged at the most downstream of the deflection electromagnet 5, which deflects the trajectory of the charged particle beam emitted from an accelerator (not shown) and guides it to the irradiation surface 9.
  • a scanning electromagnet 6a that is a first scanning electromagnet that deflects the particle beam, and a charged particle beam that is provided between the scanning electromagnet 6a and the most downstream deflection electromagnet 7 and is deflected by the scanning electromagnet 6a is used in the beam traveling direction.
  • a scanning electromagnet 6b that is a second scanning electromagnet that deflects in another direction orthogonal to the one direction in a plane perpendicular to the first direction and a downstream electromagnet 7 that is provided downstream of the scanning electromagnet 7 and is charged in both directions.
  • a skew quadrupole electromagnet 8 for deflecting the particle beam is provided.
  • Each electromagnet is connected to a respective power source 3, and the control device 2 connected to the power source 3 controls the excitation amount of each electromagnet.
  • the charged particle beam irradiation apparatus 1 of the first embodiment uses a scanning irradiation method as an irradiation method.
  • FIG. 2A is a schematic diagram when the affected part 92 of the patient 91 on the irradiation surface 9 is irradiated with a charged particle beam. In irradiation, the affected part 92 is divided in the depth direction (z direction in FIG.
  • FIG. 2B is a view as seen from the upstream side of the charged particle beam that irradiates one layer of the affected part 92 divided in the depth direction (z direction in FIG. 2A). As shown in FIG. 2B, in each layer, a charged particle beam irradiated by an electromagnet is scanned two-dimensionally to give a predetermined dose to each irradiation position. An outline of beam scanning according to the present embodiment will be described with reference to FIGS.
  • FIG. 3 is a schematic diagram of a beam scanning method by the charged particle beam irradiation apparatus of the present embodiment.
  • the scanning electromagnet 6a controls beam scanning in the x direction, which is the first direction
  • the scanning electromagnet 6b controls beam scanning in the y direction, which is the second direction.
  • the scanning electromagnet 6a may control beam scanning in the y direction
  • the scanning electromagnet 6b may control beam scanning in the x direction.
  • the scanning of these scanning electromagnet 6a and scanning electromagnet 6b is the same in other embodiments described below.
  • An alternate long and short dash line A, a dotted line B, and a solid line C represent the center of the beam trajectory when beam scanning is not performed, the center of the beam trajectory during beam scanning, and the envelope of the beam during beam scanning. In FIG. 3, only the trajectory in the x direction is depicted.
  • the scanning electromagnet 6a is used in the x direction
  • the scanning electromagnet 6b is used in the y direction
  • the skew quadrupole electromagnet 8 is used. Beam scanning is performed in both directions of y. Therefore, although not shown, a similar diagram can be drawn for the y direction.
  • the charged particle beam is scanned in the x and y directions orthogonal to the path of the charged particle beam by the scanning electromagnet 6a and the scanning electromagnet 6b, respectively.
  • the charged particle beam that has passed through the scanning electromagnet 6 a and the scanning electromagnet 6 b enters the magnetic field region of the most downstream deflection electromagnet 7 and is guided toward the irradiation surface 9.
  • the charged particle beam that has passed through the most downstream deflection electromagnet 7 enters the opening of the skew quadrupole electromagnet 8.
  • the position where the charged particle beam passes through the magnetic field of the skew quadrupole electromagnet 8 reflects the scanning by the scanning electromagnet 6a and the scanning electromagnet 6b.
  • the charged particle beam passes through the center of the opening of the skew quadrupole electromagnet 8, that is, near the center of the magnetic field region formed by the skew quadrupole electromagnet 8.
  • the skew quadrupole electromagnet 8 is installed so that the charged particle beam scanned by the positional relationship, that is, the scanning electromagnet 6a and the scanning electromagnet 6b and deflected by the most downstream deflection electromagnetic 7 passes through the opening. Is done.
  • the control device 2 has a data table of the excitation amounts of the scanning electromagnets 6a and 6b and the skew quadrupole electromagnet 8 corresponding to the irradiation position (Xm, Yn) of the charged particle beam as shown in FIG.
  • Ix_m_n, Iy_m_n, and Iq_m_n are the excitation amounts of the scanning electromagnet 6a, the scanning electromagnet 6b, and the skew quadrupole electromagnet 8 that are necessary to guide the charged particle beam to the irradiation position (Xm, Yn), respectively.
  • the controller 2 irradiates the desired irradiation position with the charged particle beam by selecting an appropriate amount of excitation from the data table.
  • This data table may be created based on actual measurement values, or may be obtained by using simulation calculation, complementation by simulation calculation of the interval between measurement points, or learning from past results.
  • FIG. 5 is a cross-sectional view of the most downstream deflection electromagnet 7 having a circular magnetic field generation region shape D.
  • the most downstream deflection electromagnet 7 includes a coil 71 for excitation, a yoke 72, and a vacuum duct 73 through which a charged particle beam passes, in the cross section.
  • the most downstream deflection electromagnet 7 having a circular magnetic field generation region shape D as shown in FIG. 5 is used.
  • the cross-sectional shape of the region where the deflection magnetic field of the most downstream deflection electromagnet 7 is generated is referred to as a magnetic field generation region shape D.
  • the scanning electromagnet is controlled so that the shape of the region through which the charged particle beam passes (hereinafter referred to as the beam passage region shape E) in the magnetic field generation region shape D of the most downstream deflection electromagnet 7 is substantially square.
  • the magnetic field generation region shape D and the beam passage region shape E may not match as shown in FIG. .
  • the most downstream deflection electromagnet 7 needs to be large enough to form the magnetic field generation region shape D including the beam passage region shape E. .
  • the two region shapes do not coincide with each other in the magnetic field generation region shape D of the most downstream deflection electromagnet 7, there is a region where the charged particle beam does not pass.
  • the most downstream deflection electromagnet 7 is required to have an excessive magnetic field region shape with respect to the required irradiation field, which makes it difficult to reduce the size and cost of the most downstream deflection electromagnet 7.
  • the beam passing region shape E is used by using the scanning electromagnets 6a and 6b. Is made to coincide with the magnetic field generation region shape D or a shape close to the magnetic field generation region shape D.
  • the skew quadrupole electromagnet 8 downstream of the most downstream deflection electromagnet 7 the required irradiation field shape is satisfied.
  • the skew quadrupole electromagnet 8 changes the circular beam passage region shape E formed in the magnetic field generation region shape D of the most downstream deflection electromagnet 7 by exciting the scanning electromagnet 6a and the scanning electromagnet 6b into a rectangular irradiation field shape. And can be transformed.
  • the most downstream deflection electromagnet 7 only needs to have a magnetic field region shape that is close to the required irradiation field, so that the most downstream deflection electromagnet 7 can be made smaller than before. .
  • FIG. 7 is a cross-sectional view of the skew quadrupole electromagnet 8.
  • the charged particle beam passing through the position (X, Y) in the skew quadrupole electromagnet 8 is ⁇ ”in the x direction and ⁇ ” in the y direction with respect to the beam trajectory before passing through the skew quadrupole electromagnet 8.
  • K is a constant proportional to the amount of excitation of the skew quadrupole electromagnet 8, and the sign changes when the direction of the excitation current is changed, and the direction 83 of the force received by the beam shown in FIG. Since the deflection angle at the skew quadrupole electromagnet 8 is proportional to the passing position of the charged particle beam, the charged particle beam passing through the origin cannot be changed.
  • scanning is performed by the upstream scanning electromagnets 6a and 6b. Since the charged particle beam deviated from the origin passes through the peripheral edge of the opening of the skew quadrupole electromagnet 8, it is possible to scan the beam in both the x and y directions using the skew quadrupole electromagnet 8.
  • the control device 2 excites the skew quadrupole electromagnet 8 according to the magnitude of the excitation current (excitation amount) of the scanning electromagnet 6a or the magnitude of the excitation current (excitation amount) of the scanning electromagnet 6b.
  • the beam scanning downstream of the most downstream deflection electromagnet 7 of the present embodiment further deflects the beam trajectory already deviated from the center trajectory A, and gives a constant deflection angle regardless of the beam passing position.
  • the scanning electromagnets 6a and 6b are used to perform beam scanning in the most downstream deflection electromagnet 7 so as to have a circular beam passage region shape E, and a square irradiation field is formed on the irradiation surface by the skew quadrupole electromagnet 8.
  • FIG. 8 shows only the first quadrant of the irradiation surface, but the irradiation position is symmetric with respect to the x axis and the y axis.
  • Circle marks are irradiation positions when the skew quadrupole electromagnet 8 is not used, and square marks are irradiation positions when the skew quadrupole electromagnet 8 is used.
  • a circle mark connected with the square mark by a dotted line is an irradiation position when the skew quadrupole electromagnet 8 is not excited when irradiating the position of the connected square mark.
  • Irradiation within a circle having a radius of 10 cm can be performed only by beam scanning with the scanning electromagnets 6a and 6b.
  • the skew quadrupole electromagnet 8 it is possible to achieve an irradiation field within a square having a side of 20 cm. That is, the maximum shape of the irradiation field is a circle having a radius of 10 cm when only the scanning electromagnets 6 a and 6 b are used, but can be transformed into a quadrangle by using the skew quadrupole electromagnet 8.
  • the maximum irradiation field shape that can be formed by scanning can be different.
  • the most downstream deflection electromagnet 7 has a circular magnetic field region shape with a radius of about 15 cm, for example.
  • the most downstream deflection electromagnet 7 is increased in size because it can be held. Moreover, although it is possible to increase the distance from the downstream end part of the most downstream deflection electromagnet 7 to the irradiation surface 9 when trying to obtain the same irradiation field without changing the size of the most downstream deflection electromagnet 7. In this case, the charged particle beam irradiation apparatus 1 itself is increased in size.
  • the beam scanning control the excitation of the skew quadrupole electromagnet 8 is stopped for irradiation within a circle having a radius of 10 cm, and the beam scanning is performed using only the scanning electromagnets 6a and 6b.
  • the skew quadrupole electromagnet 8 is excited after the scanning electromagnets 6a and 6b are excited with an excitation amount such that a charged particle beam is irradiated onto a circle with a radius of 10 cm. To irradiate a desired position outside the circle. In the present embodiment, it is possible to stop the excitation of the skew quadrupole electromagnet 8 or to the contrary, depending on the excitation amount of the scanning electromagnet 6a and the excitation amount of the scanning electromagnet 6b. .
  • the charged particle beam irradiation apparatus 1 can efficiently use the magnetic field generation region shape D of the most downstream deflection electromagnet 7 and thus has a size larger than conventionally required.
  • a small downstream most deflection electromagnet 7 can be used, and as a result, the cost of the charged particle beam irradiation apparatus 1 can be reduced.
  • the multipolar electromagnet including the skew quadrupole electromagnet 8 can efficiently deflect the charged particle beam that comes to the end of the magnetic field region, that is, the position deviated from the central trajectory. It also leads to mitigation.
  • FIG. 9 is a schematic diagram of the beam scanning method of this embodiment.
  • a quadrupole electromagnet 10 is arranged for beam deflection downstream of the most downstream deflection electromagnet 7, and beam scanning is performed in both the x and y directions using this.
  • FIG. 10 is a cross-sectional view of the most downstream deflection electromagnet 7 having a rectangular magnetic field generation region shape D.
  • the most downstream deflection electromagnet 7 whose magnetic field generation region shape D is a square circle as shown in FIG. 10 is used, and the maximum circular irradiation field shape is formed on the irradiation surface 9. As shown in FIG.
  • the scanning electromagnets 6a and 6b are used to scan a square beam in order to make the beam passage region shape E coincide with the magnetic field generation region shape D.
  • the scanning magnets 6a and 6b are used to scan the inside of the most downstream deflecting electromagnet 7 so as to have a square beam passage region shape E, and the quadrupole electromagnet 10 forms a circular irradiation field on the irradiation surface.
  • FIG. 11 shows only the first quadrant of the irradiation surface, but the irradiation position is symmetric with respect to the x axis and the y axis.
  • Circle marks are irradiation positions when the quadrupole electromagnet 10 is not used, and square marks are irradiation positions when the quadrupole electromagnet 10 is used. According to the present embodiment, even if only a square irradiation field with a side of 14.2 cm can be obtained only by beam scanning with the scanning electromagnets 6a and 6b, by using the quadrupole electromagnet 10, a circular irradiation with a radius of 10 cm is achieved. It becomes possible to achieve the field.
  • the maximum shape of the irradiation field is a quadrangle when only the scanning electromagnets 6a and 6b are used, but by using the quadrupole electromagnet 10, it is deformed into a circle containing the quadrilateral.
  • FIG. 11 regarding irradiation within a square having a side of 14.2 cm, beam scanning is performed using only the scanning electromagnets 6a and 6b without using the quadrupole electromagnet 10. Further, regarding irradiation outside the square having a side of 14.2 cm, the quadrupole electromagnet 10 is excited after exciting the scanning electromagnets 6a and 6b so that the charged particle beam is irradiated to the periphery of the square having the side of 14.2 cm.
  • the charged particle beam is deflected and irradiated so as to go to a desired position outside the square.
  • a beam scanning method using the quadrupole electromagnet 10 or excitation with only the scanning electromagnets 6a and 6b is such that the irradiation position comes within a square of 14.2 cm on a side.
  • a beam scanning method is also possible in which beam scanning is performed and a position outside the square having a side of 14.2 cm is irradiated by beam scanning with the quadrupole electromagnet 10. However, by irradiating as shown in FIG. Can be reduced.
  • FIG. 12 to 15 show an embodiment in which a hexapole electromagnet 11, a skew hexapole electromagnet 12, an octupole electromagnet 13 or a skew octupole electromagnet 14 is installed in place of the skew quadrupole electromagnet 8 or the quadrupole electromagnet 10.
  • FIG. 12 to 15 show an embodiment in which a hexapole electromagnet 11, a skew hexapole electromagnet 12, an octupole electromagnet 13 or a skew octupole electromagnet 14 is installed in place of the skew quadrupole electromagnet 8 or the quadrupole electromagnet 10.
  • FIG. 12 to 15 show an embodiment in which a hexapole electromagnet 11, a skew hexapole electromagnet 12, an octupole electromagnet 13 or a skew octupole electromagnet 14 is installed in place of the skew
  • the above embodiment it becomes possible to match the shape of the magnetic field region formed by the most downstream deflection electromagnet with the shape of the region through which the charged particle beam deflected by the scanning electromagnet passes.
  • the region the region in which the magnetic field is generated even though the charged particle beam does not pass through is reduced, and as a result, the desired irradiation field shape can be obtained while suppressing the enlargement of the most downstream deflection electromagnet.
  • the scanning magnet since the scanning magnet has high energy, such as carbon ions, even if the scanning electromagnet also requires high performance corresponding to it, the high output of the scanning electromagnet is suppressed. However, the irradiation field can be effectively enlarged or deformed.

Abstract

L'invention concerne un dispositif d'irradiation par un faisceau de particules chargées pouvant réduire la partie dans la région de génération du champ électromagnétique de l'électroaimant de déviation le plus en aval au travers de laquelle un faisceau de particules chargées n'est pas transmis. Ce dispositif d'irradiation (1) par un faisceau de particules chargées est équipé d'un électroaimant de déviation (5) qui dévie vers une surface d'irradiation (9) du trajet d'un faisceau de particules chargées émis à partir d'un accélérateur, d'un électroaimant quadripolaire (4) qui converge ou diverge le faisceau de particules chargées le long du trajet, un premier électroaimant de balayage (6a) qui est agencé en amont de l'électroaimant de déviation (7) le plus en aval et qui dévie le faisceau de particules chargées dans une direction dans le plan perpendiculaire à la direction de déplacement du faisceau, un deuxième électroaimant de balayage (6b) qui est agencé entre le premier électroaimant de balayage (6a) et l'électroaimant de déviation (7) le plus en aval et qui dévie le faisceau de particules chargées dévié par le premier électroaimant de balayage (6a) dans l'autre direction perpendiculaire à ladite une direction susmentionnée dans le plan perpendiculaire à la direction de déplacement du faisceau et un électroaimant quadripolaire oblique (8) qui est agencé en aval de l'électroaimant de déviation (7) le plus en aval et qui dévie le faisceau de particules chargées dans les deux directions susmentionnées.
PCT/JP2013/070683 2013-07-31 2013-07-31 Dispositif d'irradiation par un faisceau de particules chargées WO2015015579A1 (fr)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106139419A (zh) * 2016-07-29 2016-11-23 中国原子能科学研究院 用于治疗肿瘤的旋转机架

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09265000A (ja) * 1996-03-29 1997-10-07 Mitsubishi Electric Corp 荷電粒子ビーム輸送系
JP2011206237A (ja) * 2010-03-30 2011-10-20 Hitachi Ltd 荷電粒子ビーム輸送装置及び粒子線治療システム
WO2012117538A1 (fr) * 2011-03-02 2012-09-07 三菱電機株式会社 Système d'irradiation par faisceau de particules et procédé de commande pour un système d'irradiation par faisceau de particules

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09265000A (ja) * 1996-03-29 1997-10-07 Mitsubishi Electric Corp 荷電粒子ビーム輸送系
JP2011206237A (ja) * 2010-03-30 2011-10-20 Hitachi Ltd 荷電粒子ビーム輸送装置及び粒子線治療システム
WO2012117538A1 (fr) * 2011-03-02 2012-09-07 三菱電機株式会社 Système d'irradiation par faisceau de particules et procédé de commande pour un système d'irradiation par faisceau de particules

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106139419A (zh) * 2016-07-29 2016-11-23 中国原子能科学研究院 用于治疗肿瘤的旋转机架

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