| 摘要 |
<p>X-ray pixel beam array systems and methods for electronically shaping radiation fields and modulating radiation field intensity patterns for radiotherapy are disclosed. One exemplary pre-clinical system may include addressable electron field emitters that are operable to emit a plurality of electron pixel beams. Each electron pixel beam may correspond to an x-ray target and x-ray pixel beam collimation aperture to convert a portion of energy associated with the electron pixel beam to a corresponding x-ray pixel beam. Further, the x-ray pixel beam array collimator forms a one-to-one correspondence between individual electron pixel beams and its corresponding x-ray pixel beam. One exemplary clinical system may include a high-energy electron source, an n- stage scanning system, x-ray pixel beam targets, and an x-ray pixel beam array collimator. A controller may sequentially direct electron beam pulses to predetermined x-ray pixel targets and produce an electronically controlled radiation field direction, pattern, and intensity pattern.</p> |
