公开(公告)号：US5438991A

公开(公告)日：1995-08-08

申请号：US137568

申请日：1993-10-18

申请人： Cedric Yu ,  John Wong

发明人： Cedric Yu ,  John Wong

IPC分类号： A61N5/10 ,  G21K1/02 ,  A61B6/00

CPC分类号： G21K1/046 ,  A61N5/1049 ,  G21K1/025 ,  A61N2005/1056 ,  A61N5/1042

摘要： A method and system for simulating and verifying a radiation therapy beam prior to treatment. The system also permits the accurate positioning of the beam with respect to the patient. The system utilizes a contour on a prescription image which defines the location and shape of a desired radiation treatment area to generate a transmissive projection which projects the exact field contour onto the patient during simulation. The patient can then be marked with this field contour prior to treatment in the simulation apparatus. With the patient placed in the treatment apparatus the accurate positioning of the patient can be achieved by aligning the patient's skin markings with a light projected through a multi-leaf collimator onto the skin. Furthermore, the correct functioning of the multi-leaf collimator can be verified in this manner since incorrect leaf positions will show up in the light projected onto the patient's skin. The transmissive projection means may comprise, in the preferred embodiment, a liquid crystal display projection device under control of a host computer storing a digitized image of the field contour.

摘要翻译： 一种在治疗前模拟和验证放射治疗束的方法和系统。 该系统还允许光束相对于患者的精确定位。 该系统在处方图像上利用轮廓，其限定所需放射治疗区域的位置和形状，以产生在模拟期间将精确的场轮廓投影到患者上的透射投影。 然后可以在模拟装置中治疗之前，对患者进行该区域轮廓的标记。 将患者放置在治疗设备中，可以通过将患者的皮肤标记与通过多叶准直器投影的光对准到皮肤上来实现患者的准确定位。 此外，可以以这种方式验证多叶准直器的正确功能，因为不正确的叶位置将在投射到患者皮肤上的光中出现。 在优选实施例中，透射投影装置可以包括在存储现场轮廓的数字化图像的主计算机的控制下的液晶显示投影装置。

公开(公告)号：US5159613A

公开(公告)日：1992-10-27

申请号：US503288

申请日：1990-04-02

申请人： Donovan M. Bakalyar ,  Yong-Sung Paek

发明人： Donovan M. Bakalyar ,  Yong-Sung Paek

IPC分类号： A61B5/05 ,  H03K5/156 ,  H03K7/04

CPC分类号： A61B5/05 ,  H03K5/156 ,  H03K7/04

摘要： An upper and lower side-band generator comprised of a combination of combinational logic circuits. In a preferred embodiment the invention utilizes a substantially square wave sync output associated with carrier and modulator signal generators. A lower side-band signal is generated by synchronizing the transitions of a modulator signal with the transitions of a carrier signal, mixing the synchronized signal with the carrier signal, and filtering the resulting mixed signal. An upper side band signal is generated by synchronizing the carrier and modulator signals, delaying the resulting synchronized signal, and mixing the delayed, synchronized signal and the carrier signal.

摘要翻译： 由组合逻辑电路组合的上下边带发生器。 在优选实施例中，本发明利用与载波和调制器信号发生器相关联的基本上方波同步输出。 通过使调制器信号的转变与载波信号的转变同步，将同步信号与载波信号混合，并对所得到的混合信号进行滤波，产生较低的边带信号。 通过同步载波和调制器信号，延迟所得到的同步信号，以及混合延迟的同步信号和载波信号来产生上边带信号。