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41. 发明专利

JP2003320040A Device for charged particle beam, and operation method therefor 审中-公开
标题翻译：充电颗粒束的装置及其操作方法
公开(公告)号：JP2003320040A
公开(公告)日：2003-11-11
申请号：JP2003123119
申请日：2003-04-28
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： HIRAMOTO KAZUO , AKIYAMA HIROSHI , MATSUDA KOJI
IPC分类号： G21K1/10 , G21K5/04 , A61N5/10 , H05G2/00 , H05H7/10 , H05H13/04
CPC分类号： A61N5/1042 , A61N2005/1087
摘要： PROBLEM TO BE SOLVED: To reduce a loss of a charged particle beam. SOLUTION: Beam energy Ei suitable for irradiation is found in response to a depth of each layer by an arithmetic unit 131, based on patient information such as energy of the emitted charged particle beam. A controller 132 controls an electric power source device 165 for an accelerator to supply currents to a deflecting electromagnet 146 and a quadrupole electromagnet 145 and to supply electric power to a high-frequency acceleration cavity 147, so as to accelerate the running-around charged particle beam to the beam energy Ei. The loss of a charged particle beam is reduced thereby to form a uniform irradiation field. COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：减少带电粒子束的损失。解决方案：基于诸如发射的带电粒子束的能量的患者信息，响应于运算单元131的每层的深度，发现适合于照射的光束能量Ei。控制器132控制用于加速器的电源装置165向偏转电磁体146和四极电磁铁145提供电流，并向高频加速腔147提供电力，以加速循环带电粒子光束到光束能量Ei。带电粒子束的损失减小从而形成均匀的照射场。版权所有（C）2004，JPO

42. 发明专利

JP2001257100A DEFLECTION ELECTROMAGNET CONTROL DEVICE FOR ACCELERATOR 失效
公开(公告)号：JP2001257100A
公开(公告)日：2001-09-21
申请号：JP2000070985
申请日：2000-03-09
申请人： HITACHI LTD
发明人： HARA SHIGEMITSU , HIRAMOTO KAZUO , NISHIUCHI HIDEAKI
IPC分类号： G21K1/093 , H01F7/06 , H05H7/04 , H05H13/04
摘要： PROBLEM TO BE SOLVED: To provide a deflection electromagnet control device for an accelerator which can reduce the loss of charged particles. SOLUTION: The deflection electromagnet control device comprises a pick-up coil 3 and an integrator 4 which measure the effective length integral value of the magnetic field generating deflection electromagnet, a computing element 5 which calculates the difference of the effective length integral value measured and an effective length integral value to be targeted, and a coil current value controlling power source 6 which controls the magnetic field generating deflection electromagnet according to the result of the difference.

43. 发明专利

JP2001013296A DEVICE FOR PRODUCING RADIOACTIVE NUCLIDE 失效
公开(公告)号：JP2001013296A
公开(公告)日：2001-01-19
申请号：JP18106999
申请日：1999-06-28
申请人： HITACHI LTD
发明人： OKAZAKI TAKASHI , HONDA TAKURO , HIRAMOTO KAZUO , MAKI KOICHI , YAMADA NAOYUKI
IPC分类号： G21G1/12 , G21G4/08
摘要： PROBLEM TO BE SOLVED: To install a device in every hospital without using an accelerator by irradiating with a laser beam a material consisting of hydrogen and a parent nuclide of a radioactive nuclide that emits positrons. SOLUTION: A laser oscillator 1 generates a laser beam 4, which is condensed on and emitted onto the inside of the material 3 consisting of hydrogen and a parent nuclide of a radioactive nuclide that emits hydrogen and positrons by equipment 5 of an optical system. The material 3 is transformed into plasma in a condensing point of the laser beam 4 and protons in the material 3 in the form of plasma are accelerated by beam pressure of the laser beam 4 and collide with the parent nuclide of the radioactive nuclide that emits positrons to generate a radioactive nuclide that emits positrons. When the natural abundance ratio of the parent nuclide of the radioactive nuclide in the material 3 is low, the quantity of the generated radioactive nuclide can be increased by enrichment thereof. Consequently, this device can be installed in every hospital where radioactive formulas are used, which eliminates the necessity to transport radioactive formulas from a facility equipped with an accelerator.

44. 发明专利

JP2000292591A TRANSPORTATION METHOD FOR RADIOACTIVE ISOTOPE AND TRANSPORTATION CASK 失效
公开(公告)号：JP2000292591A
公开(公告)日：2000-10-20
申请号：JP10377699
申请日：1999-04-12
申请人： HITACHI LTD
发明人： SHIBATA KEIICHIRO , MAKI KOICHI , HIRAMOTO KAZUO , YAMADA NAOYUKI
IPC分类号： G21F5/015
摘要： PROBLEM TO BE SOLVED: To increase transporting mass per a unit of a transporting means with a transportation cask of radioactive isotope with short half life compared with transporting time by separating and removing shield body becoming unnecessary during the transportation due to reduction of radioactivity among the shield body necessary for fulfilling the tolerable value of dose at the initiation of the transportation. SOLUTION: A transportation cask consists of a plurality of layers and has a means for confirming the dose between layers. A vessel 101 charged with a marking chemical is contained in the transportation cask consisting of first layer shield body vessel shells 211 and 212 and second layer shield bodies 221 and 222. In accordance with the reduction of radioactivity during transportation, dose rate at the outer surface of the first layer shield vessel reduces. After confirming the undershooting of the dose rate at the outer surface of the first layer shield vessel with a dose meter 401 inserted inside the double doors 301 and 302, the second layer is separated and removed.

45. 发明专利

JP2000284096A PRODUCTION METHOD FOR RADIOACTIVE ISOTOPE AND ITS PRODUCTION DEVICE 失效
公开(公告)号：JP2000284096A
公开(公告)日：2000-10-13
申请号：JP9241799
申请日：1999-03-31
申请人： HITACHI LTD
发明人： HONDA TAKURO , HIRAMOTO KAZUO , YAMADA NAOYUKI , OKAZAKI TAKASHI , AKIYAMA HIROSHI
IPC分类号： G21G1/06
摘要： PROBLEM TO BE SOLVED: To shorten time necessary for recovering produced radioactive isotopes. SOLUTION: In a reaction tank 10, LiOH solution 8 containing 6Li is charged. Neutrons radiated from a neutron source 1 in a neutron source protection cover 29 is cast in the LiOH solution 8. The neutrons are made to thermal neutron by water included in the LiOH solution 8. The thermal neutrons react with 6Li contained in the LiOH solution 8 to discharge 3H. The 3H reacts with 16O contained in water molecule in the LiOH solution 8, and as a result, 18F as a radioactive isotope is produced. 18F is used as an index of a radioactive chemical. Only by supplying a recovery purification device 50 with the LiOH solution 8, the 18F as a radioactive isotope is conveyed from the reaction tank 10 being a reaction part to the recovery purification device 50 easily and in a short time.

46. 发明专利

JP2000124000A CHARGED PARTICLE BEAM EMITTING METHOD 失效
公开(公告)号：JP2000124000A
公开(公告)日：2000-04-28
申请号：JP29490098
申请日：1998-10-16
申请人： HITACHI LTD
发明人： HIRAMOTO KAZUO
IPC分类号： H05H13/04 , H05H7/10
摘要： PROBLEM TO BE SOLVED: To efficiently emit charged particle beams with simple control by applying the high frequency electromagnetic field of intensity set on the basis of the energy of a charged particle beams through a control device, to the charged particle beams accelerated circulating in a synchrotron. SOLUTION: A predetermined charged particle beam emitted from a prior stage accelerator 4 by the instruction of a control device 3 is made incident in an accelerator of a synchrotron 1 through an incident apparatus 16. The beams adjusted to a given energy by a high frequency wave applying device 11 for increasing betatron vibration amplitude of the beams, a deflecting electromagnet 12 for bending the trajectory of the beams, a four-electrode electromagnet 13 for controlling betatron vibration of the beams, a six-electrode electromagnet 14 for exciting resonance, and a high frequency accelerating cavity 15 for accelerating the beams are emitted through an emitting deflector 17. In the emission, the higher the energy of the charged particle beams is, the higher the intensity of the high frequency electromagnetic field applied to the beams is set. The beam emission quantity can therefore be kept constant regardless of the energy of the beams.

47. 发明专利

JPH11169469A IRRADIATION OF CHARGED PARTICLE BEAM AND DEVICE THEREFOR 失效
公开(公告)号：JPH11169469A
公开(公告)日：1999-06-29
申请号：JP34103597
申请日：1997-12-11
申请人： HITACHI LTD
发明人： MATSUDA KOJI , HIRAMOTO KAZUO , AKIYAMA HIROSHI
IPC分类号： G21K1/08 , A61N5/10 , G21K5/04
摘要： PROBLEM TO BE SOLVED: To obtain the dimensional distribution of a dose received by a patient in a charged particle beam medical treatment by recording information concerning an irradiating position and a charged particle beam irradiating quantity and the parameters of a charged particle beam generating device and a charged particle beam irradiating device during the irradiation of a charged particle beam. SOLUTION: The charged particle beam accelerated by the charged particle beam generating device 1 is transmitted so as to be irradiated to the patient 7 through the use of the charged particle beam irradiating device 3. The irradiating device 3 is provided with a scanning electromagnet 4 which deflects the charged particle beam in the vertical direction against the beam progress one by a magnetic field, a beam position monitor 5 measuring the passage position of the charged particle beam and a beam current monitor 6 measuring the current of the charged particle beam. A dosage calculating part 8 records measurement values from the beam position monitor 5 and the beam current monitor 6 and information pieces from as irradiation control part 10 and an accelerator control part 11. Then, a three-dimensional dose distribution is calculated based on all of these pieces of information.

48. 发明专利

JPH11142596A CHARGED PARTICLE BEAM EMISSION DEVICE 失效
公开(公告)号：JPH11142596A
公开(公告)日：1999-05-28
申请号：JP24135498
申请日：1998-08-27
申请人： HITACHI LTD
发明人： AKIYAMA HIROSHI , HIRAMOTO KAZUO , MATSUDA KOJI , NORIMINE TETSUROU
IPC分类号： G21K1/087 , A61N5/10 , G21K5/04 , H01J37/147
摘要： PROBLEM TO BE SOLVED: To narrow the magnetic pole interval of a scanning electro-magnet to reduce consumption power of the scanning electro-magnet by arranging a four-pole electro-magnet between the two scanning electro-magnets out of a plurality of the scanning electro-magnets. SOLUTION: A charged particle beam emission device is provided for instance with four-pole electro-magnets 1-5 and scanning electro-magnets 100, 110 deflecting a beam in the directions of an XZ face and a Y-axis respectively. The four-pole electro-magnets 4, 5 are constituted to be put between the scanning electro-magnets 100, 110. The beam deflected by the scanning electro-magnet 100 advances while beta oscillation is performed by the four-pole electro- magnets 4, 5. The center orbit of the beam intersects at the center position of the scanning electro-magnet 110 by making the phase difference of betatron oscillation between the scanning electro-magnets 100, 110 the integer times of substantially 180 degrees by setting of the positions of the scanning electro- magnets 100, 110 and regulation of magnetic field intensity of the four-pole electro-magnets 4, 5, thus enable narrowing the interval of the magnetic pole of the scanning electro-magnet 110.

49. 发明专利

JPH10199700A CHARGED PARTICLE BEAM DEVICE, AND OPERATION METHOD THEREOF 失效
公开(公告)号：JPH10199700A
公开(公告)日：1998-07-31
申请号：JP4681598
申请日：1998-02-27
申请人： HITACHI LTD
发明人： HIRAMOTO KAZUO , TADOKORO MASAHIRO , NORIMINE TETSUROU
IPC分类号： G21K5/04 , A61N5/10 , H05H13/04
摘要： PROBLEM TO BE SOLVED: To irradiate a charged particle beam to an object to be irradiated at favorable precision and with inform beam density under simple control even in the case where the form of the object to be irradiated is complicated. SOLUTION: A charged particle beam device is composed of a prestage accelerator 98, a synchrotron type accelerator 100, a rotary irradiation device 110, and a group of control devices 140. An irradiation control device 130 controls outgoing of a charged particle beam from the accelerator 100 to the rotary irradiation device 110. An operation device 131 detriments necessary data for control of irradiation of the charged particle beam to an affected part by the irradiation control device 130. An acceleration control device 132 controls outgoing of the charged particle beam from the prestage accelerator 98 to the accelerator 100, acceleration of the charged particle beam rotating around the accelerator 100, and transport of the charged particle beam at the rotary irradiation device 110.

50. 发明专利

JPH10127792A CHARGED PARTICLE BEAM DEVICE 失效
公开(公告)号：JPH10127792A
公开(公告)日：1998-05-19
申请号：JP29146096
申请日：1996-11-01
申请人： HITACHI LTD
发明人： HIRAMOTO KAZUO , AKIYAMA HIROSHI , MATSUDA KOJI
IPC分类号： G21K3/00 , A61N5/10 , G21K5/04
摘要： PROBLEM TO BE SOLVED: To provide a charged particle beam device in which energy width distribution can be formed to be suitable to thickness change of a lesion part to irradiate the lesion part at favorable precision. SOLUTION: A charged particle beam device comprises a prestage accelerator 98, a synchrotron type accelerator 100, a rotary irradiation device 110, and a group of control devices 140. Ions of low energy are applied from the prestage accelerator 98 to the accelerator 100, and after they are accelerated at the accelerator 100, they are projected to the rotary irradiation device 110 in a treatment chamber 103, where an ion beam is used for treatment. A radiation control device 130 controls projection of a charged particle beam from the accelerator 100 to the rotary irradiation device 110 to move a range shifter to set a beam energy at Ei, thereby a ridge filter is moved to set a beam energy width at ΔEi.

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