Annular electron beam generation apparatus in medical imaging application, supplies radio frequency energy to cavity for accelerating electrons, and outputs accelerated electrons as annular electron beam

摘要

The apparatus includes a cavity for receiving electrons from cathode. An energy input terminal coupled to the cavity supplies the radio frequency (RF) energy at the cavity, for accelerating electrons. An energy output terminal coupled to the cavity, outputs the accelerated electrons as annular electron beam. Independent claims are also included for the following: (1) annular electron beam generating method; and (2) electron beam generating system.