公开(公告)号：US07308073B2

公开(公告)日：2007-12-11

申请号：US11163496

申请日：2005-10-20

申请人： J. Eric Tkaczyk ,  Deborah J. Walter ,  Xiaoye Wu ,  Brian C. Bales ,  James W. Leblanc ,  Yanfeng Du

发明人： J. Eric Tkaczyk ,  Deborah J. Walter ,  Xiaoye Wu ,  Brian C. Bales ,  James W. Leblanc ,  Yanfeng Du

IPC分类号： G21K3/00

CPC分类号： G21K1/10

摘要： A bowtie filter is constructed to have a fluidic envelope filled with attenuating fluid and a displacement insert that can present various x-ray attenuation profiles during a scan. The insert is designed to displace the attenuating fluid to achieve a denied attenuating or filtering profile. The insert can be rotated, twisted, moved, and otherwise contorted within the fluidic envelope as needed during the course of a scan. As the angle, position and shape of the zombie is changed, the x-ray profile of the filter changes. The insert may have a default shape when at rest, but can have its shape changed when external forces are placed thereon. As x-ray filtering needs change during the course of the scan, the insert can be compressed, stretched, and/or contorted to achieve additional filtering profiles.

摘要翻译： 弓形过滤器被构造成具有填充有衰减流体的流体信封和可在扫描期间呈现各种x射线衰减分布的位移插入件。 插入件被设计成使衰减流体移位以实现被拒绝的衰减或过滤轮廓。 在扫描过程中，插入物可以根据需要旋转，扭转，移动，并且在流体封套内扭曲。 随着僵尸的角度，位置和形状的改变，过滤器的X射线轮廓也会改变。 当静止时，插入件可以具有默认形状，但是当外力在其上放置时，其形状可以改变。 由于X射线过滤在扫描过程中需要更改，所以插入物可以被压缩，拉伸和/或扭转以实现额外的过滤轮廓。