Charged particle beam therapy device
A technology of charged particle beam and treatment device, which is applied in the directions of treatment, X-ray/γ-ray/particle irradiation therapy, radiation therapy, etc., can solve the problems of prolonging the irradiation time, prolonging the treatment time, etc., and achieve the effect of shortening the time.
Active Publication Date: 2019-01-18
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] Such as 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 treatm...
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A charged particle beam therapy device capable of shortening a time required for charged particle beam treatment is provided. An irradiation unit (2) includes a scanning electromagnet (6) for scanninga charged particle beam (B) at a predetermined position, which is a predetermined layer irradiated in the depth direction of the charged particle beam (B). A control unit (7) controls an irradiationunit (2) to irradiate a charged particle beam (B) with a first current value to scan, and then irradiate a charged particle beam (B) with a second current value different from the first current valueto scan. With this configuration, the irradiation unit (2) can irradiate the charged particle beam (B) by setting a lower current value of the first current value and the second current value in the region where the dose is low. On the other hand, the irradiation unit (2) can irradiate the charged particle beam (B) by setting the current value higher of the first current value and the second current value for the region where the dose is higher. Thus, the charged particle beam can be irradiated with a current value corresponding to the dose for each region.
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...
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IPC IPC(8): A61N5/10
CPCA61N5/103A61N5/1048A61N5/1077A61N2005/1092
Inventor 上口长昭
Owner SUMITOMO HEAVY IND LTD