公开(公告)号：US20200261745A1

公开(公告)日：2020-08-20

申请号：US16675517

申请日：2019-11-06

Applicant: Hitachi, Ltd.

Inventor： Tomokazu SHIMAKURA ,  Chihiro NAKASHIMA ,  Satoshi TOTAKE ,  Kazuo TOMIDA ,  Takeshi FUJITA

IPC: A61N5/10

Abstract: To provide a particle beam therapy device that expands an irradiation field while avoiding an increase in size of a scanning unit or an irradiation device including the scanning unit. A shift unit 36 is provided downstream of a scanning unit 34. The shift unit 36 deflects a carbon beam as a particle beam to shift the irradiation field, thereby forming an expanded irradiation field. The shift unit 36 includes a first shift electromagnet 42 that shifts the irradiation field in a Y direction and a second shift electromagnet 44 that shifts the irradiation field in an X direction. The scanning unit is dynamically controlled, and the shift unit 36 is statically controlled.