专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US07308073B2 X-ray filter having dynamically displaceable x-ray attenuating fluid 失效
标题翻译： X射线滤光片具有动态位移的x射线衰减流体
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。

2. 发明授权

US06848827B2 Method and apparatus for calibrating detector spectral response 失效
标题翻译：用于校准检测器光谱响应的方法和装置
公开(公告)号：US06848827B2
公开(公告)日：2005-02-01
申请号：US10437222
申请日：2003-05-13
申请人： Xiaoye Wu , James LeBlanc , Deborah J. Walter
发明人： Xiaoye Wu , James LeBlanc , Deborah J. Walter
IPC分类号： A61B6/00 , G01D18/00
CPC分类号： A61B6/583
摘要： The present technique provides for the spectral calibration of the detector elements of a CT detector using one or more offset calibration phantoms. The offset phantoms provide greater coverage of the detector elements as well as spectral response data associated with penetration lengths ranging in length from a minimum chord of the phantom to the diameter of the phantom. The spectral response as a function of penetration length can be obtained for each detector element by comparing the fitting of each projection view to the corresponding measured projection view over all view angles. The fitting information may then be employed to derive the coefficients of the spectral response curve for each detector element, which may in turn be employed to provide rapid correction of the spectral response for each element.
摘要翻译：本技术提供使用一个或多个偏移校准体模的CT检测器的检测器元件的光谱校准。偏移模型提供了更大的检测器元件的覆盖范围以及与从体模的最小和弦到体模直径的长度范围相关联的光谱响应数据。通过比较每个投影视图与所有视角上对应的测量投影视图的拟合，可以为每个检测器元件获得作为穿透长度的函数的光谱响应。然后可以采用拟合信息来导出每个检测器元件的光谱响应曲线的系数，其可以用于提供对于每个元件的光谱响应的快速校正。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式