公开(公告)号：US20060115050A1

公开(公告)日：2006-06-01

申请号：US10541563

申请日：2004-01-05

Applicant: Theodore Resnick

Inventor： Theodore Resnick

IPC: H05G1/44

CPC classification number: A61B6/405 ,  A61B6/032 ,  A61B6/4021 ,  H01J35/045 ,  H01J35/14 ,  H05G1/34 ,  H05G1/36

Abstract: A dose-modulated irradiating system includes an x-ray tube (20) with at least a filament (80) for generating electrons, a cathode (84) and an anode (92) for accelerating and collimating the generated electrons into an electron beam (94), and an electrostatic grid with grid electrodes (110, 112) for steering the electron beam (94) on the anode (92). The anode (92) generates an x-ray beam (96) responsive to the electron beam (94). Grid biasing is provided for applying a time-varying electrical bias to the grid electrodes (110, 112) that produces a first time-varying intensity modulation of the electron beam (94). A current of the filament (80) is modulated to produce a second time-varying intensity modulation of the electron beam (94). A controller (52) controls cooperatively combining the first and second time-varying intensity modulations to produce a combined time-varying intensity modulation.

Abstract translation: 剂量调制照射系统包括具有用于产生电子的至少一根细丝（80）的X射线管（20），用于加速和准直所产生的电子为电子束的阴极（84）和阳极（92） 94）以及具有用于转向阳极（92）上的电子束（94）的栅格电极（110,112）的静电栅格。 阳极（92）响应于电子束（94）产生X射线束（96）。 栅格偏置被提供用于对产生电子束（94）的第一时变强度调制的栅电极（110,112）施加时变电偏压。 灯丝（80）的电流被调制以产生电子束（94）的第二时变强度调制。 控制器（52）控制协同地组合第一和第二时变强度调制以产生组合的时变强度调制。