Charged particle beam therapy device
A charged particle beam and treatment device technology, which is applied in treatment, X-ray/γ-ray/particle irradiation therapy, radiation therapy, etc., can solve the problems of prolonging the irradiation time and treatment time, and achieve the effect of shortening the time
Active Publication Date: 2022-02-18
SUMITOMO HEAVY IND LTD
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Problems solved by technology
[0005] However, there is a problem that in the case of performing the above treatment, the irradiation time is greatly prolonged due to the need to irradiate the charged particle beam with a low current (low dose rate) for a long time in an area with a high dose, and the time required for the treatment is prolonged
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[0021] Hereinafter, a charged particle beam therapy apparatus according to an embodiment of the present invention will be described with reference to the drawings. In addition, in the description of the drawings, the same reference numerals are attached to the same elements, and repeated descriptions are omitted.
[0022] like figure 1 As shown, the charged particle beam therapy device 1 according to one embodiment of the present invention is a device used for cancer treatment or the like by radiotherapy, and includes an accelerator 3 for generating ion beams generated in an ion source (not shown). The charged particles are accelerated and emitted as a charged particle beam; the irradiation unit 2 irradiates the object to be irradiated with the charged particle beam; and the beam transport line 41 transports the charged particle beam emitted from the accelerator 3 to the irradiation unit 2 . The irradiation unit 2 is mounted on a rotating frame 5 provided around the treatment...
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A charged particle beam therapy device capable of shortening the time required for charged particle beam therapy. The irradiation unit (2) includes a scanning electromagnet (6) that scans the charged particle beam (B) at a predetermined layer, that is, a predetermined position in the depth direction from which the charged particle beam (B) is irradiated. In addition, the control unit (7) controls the irradiation unit (2) by irradiating the charged particle beam (B) with a first current value for scanning, and then irradiating the charged particle beam with a second current value different from the first current value ( B) while scanning. With such a configuration, the irradiation unit (2) can set the lower current value of the first current value and the second current value to irradiate the charged particle beam (B) to a region with a lower dose. On the other hand, the irradiating unit (2) can set the higher current value of the first current value and the second current value to irradiate the charged particle beam (B) to a region with a higher dose. In this way, each area can be irradiated with a charged particle beam at a current value corresponding to the dose.
Description
technical field [0001] The invention relates to a charged particle beam therapy device. Background technique [0002] Conventionally, as a charged particle beam therapy device for treating an affected part of a patient by irradiating a charged particle beam, for example, a device described in Patent Document 1 is known. In the charged particle beam therapy apparatus described in Patent Document 1, a charged particle beam accelerated by an accelerator is scanned by a scanning electromagnet, and then irradiated to an affected part of a patient. This charged particle beam therapy device adjusts the dose of the charged particle beam irradiated to the affected area by adjusting the scanning speed of the charged particle beam. [0003] Patent Document 1: Japanese Patent Laid-Open Publication No. 2009-243891 [0004] Here, in the above-mentioned charged particle beam therapy apparatus, the current value of the charged particle beam is kept constant without changing during irradia...
Claims
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IPC IPC(8): A61N5/10
CPCA61N5/103A61N5/1048A61N5/1077A61N2005/1092
Inventor 上口长昭
Owner SUMITOMO HEAVY IND LTD