公开(公告)号：US20070097331A1

公开(公告)日：2007-05-03

申请号：US11581959

申请日：2006-10-16

申请人： Philip Sadler ,  Mary-Patricia Adamo ,  James Kumler

发明人： Philip Sadler ,  Mary-Patricia Adamo ,  James Kumler

IPC分类号： G03B21/14

CPC分类号： G03B37/00 ,  G02B13/06 ,  G03B21/147 ,  G09B27/00

摘要： Featured is a projection lens assembly including a plurality or more of optical elements, whose optical elements are configured and arranged so the configuration and arrangement substantially maintains the shape of the images being displayed throughout a hemispherical screen. That is, the optical elements are configured and arranged so to introduce a predetermined amount of distortion that substantially maintains the shape of the images being displayed on the screen from the zenith to near the edge of the field of view. Also featured are projection apparatuses and systems embodying such a projection lens assembly.

摘要翻译： 特色是包括多个或多个光学元件的投影透镜组件，其光学元件被配置和布置，使得构造和布置基本上保持在整个半球形屏幕中显示的图像的形状。 也就是说，光学元件被配置和布置为引入预定量的失真，其基本上将屏幕上显示的图像的形状从天顶到视野的边缘附近。 也是具有这种投影透镜组件的投影设备和系统的特征。

公开(公告)号：US20110121763A1

公开(公告)日：2011-05-26

申请号：US13054732

申请日：2008-07-18

申请人： Philip Sadler ,  David Harrison ,  Neil Mccann

发明人： Philip Sadler ,  David Harrison ,  Neil Mccann

IPC分类号： H05H9/00

CPC分类号： H05H9/00

摘要： We propose that during the factory testing of the linac, rather than simply confirming that the beam falls within the permissible ranges set out in the standard, the beam is in fact adjusted towards a standard signature. A new (or existing) linac could then be paired to a new linac, or to an existing linac, such as one that it is to operate alongside or one that it is to replace. Treatment plans would then be transferable between such pairs of linacs. In addition, the standard signature to which the linacs were approximated could be placed towards the centre of the permitted ranges, to produce linacs that were more reliable over the very long term. This requires a linac that has automatically adjustable parameters, so that a suitable programmed computer is able to monitor the output of the linac and adjust its operating parameters. We therefore provide a radiation source comprising a linear accelerator, beam control circuitry for the linear accelerator, an electronic control apparatus for the control circuitry arranged to adjust properties thereof, and a monitor for detecting properties of the radiation beam produced by the linear accelerator, wherein the control apparatus is adapted to retain a set of beam properties and periodically activate the accelerator, measure the current beam properties via the monitor, compare the measured beam properties to the retained beam properties, and potentially adjust the control circuitry properties to align the beam properties towards the retained beam properties. The beam properties that are measured may include at least one of beam flatness and beam width. The retained beam properties can be the properties of the beam produced by the linear accelerator when new, or the properties of a standard beam. The control apparatus is preferably arranged to send a message if the difference between the measured beam properties and the retained beam properties exceeds a threshold. It may also send a message to a remote location if the difference between the measured beam properties and the retained beam properties exceeds a second threshold.

公开(公告)号：US08698429B2

公开(公告)日：2014-04-15

申请号：US13054732

申请日：2008-07-18

申请人： Philip Sadler ,  David Harrison ,  Neil McCann

发明人： Philip Sadler ,  David Harrison ,  Neil McCann

IPC分类号： H05H9/00

CPC分类号： H05H9/00

摘要： There is provided a radiotherapy system comprising a linear accelerator, beam control circuitry for the linear accelerator, an electronic control apparatus for the control circuitry arranged to adjust properties thereof, and a monitor for detecting properties of the radiation beam produced by the linear accelerator, wherein the control apparatus is adapted to retain a set of beam properties and periodically activate the accelerator, measure the current beam properties via the monitor, compare the measured beam properties to the retained beam properties, and potentially adjust the control circuitry properties to align the beam properties towards the retained beam properties. The beam properties that are measured may include beam flatness and beam width. The retained beam properties can be the properties of the beam produced by the linear accelerator when new, or the properties of a standard beam. There is also provided a method for operating the system.

摘要翻译： 提供了一种放射治疗系统，包括线性加速器，用于线性加速器的束控制电路，用于调节其特性的控制电路的电子控制装置，以及用于检测由线性加速器产生的辐射束的特性的监视器，其中 控制装置适于保持一组光束特性并周期性地启动加速器，经由监视器测量当前的光束特性，将所测量的光束特性与所保留的光束特性进行比较，并且潜在地调整控制电路特性以对准光束特性 朝向保留梁的性质。 测量的光束特性可以包括光束平坦度和光束宽度。 保留的光束特性可以是当新的线性加速器或标准光束的特性时产生的光束的特性。 还提供了一种操作系统的方法。