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1.
公开(公告)号:US06639967B2
公开(公告)日:2003-10-28
申请号:US09965293
申请日:2001-09-27
IPC分类号: A61N510
摘要: A radiation therapy device (2) includes a programmable power source (300) and controller (302) that monitor an injected current level and controls heater voltage in response thereto. The heater voltage is reduced in predetermined increments without affecting the beam profile.