Radiotherapy device and microwave source thereof
AssigneeShanghai United Imaging Healthcare Co., Ltd.
InventorPeng Wang
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Abstract
A microwave source used in the radiotherapy device can be provided. The microwave source may include an anode block and one or more cathodes. The cathode of the microwave source may include a cathode support element having a plurality of slots. The plurality of slots can be axially around a circumference of the cathode support element. The microwave source may include a cathode heater including at least one filament. A first part of the at least one filament may be wound around the cathode support element along a first direction and received by a first portion of the plurality of slots, and a second part of the at least one filament may be wound around the cathode support element along a second direction and received by a second portion of the plurality of slots.
Claims20
A microwave source, comprising:
- an anode block;
- and
- multiple cathodes,
- wherein when an individual cathode of the multiple cathodes is removably positioned in a center of the anode block, microwaves having a specific frequency are generated in response to an occurrence of a resonance effect caused by the anode block and the cathode.
A cathode, comprising:
- a cathode support element having a slot, the slot being axially around a circumference of the cathode support element;
- a cathode heater, and
- a thermionic emitter, wherein the thermionic emitter includes a hollow cylinder of emissive material, and the cathode support element is disposed in a hollow space of the thermionic emitter.
Dependencies are inferred from the claim text.