-
公开(公告)号：US07561665B2
公开(公告)日：2009-07-14
申请号：US11406570
申请日：2006-04-18
IPC分类号： G01N23/04
CPC分类号： G01N23/04
摘要： A dual pulse imaging method is provided comprising the steps of generating a first image of a region of interest by a first pulse delivering a first dose, generating a second image of the region of interest by a second pulse delivering a second dose different from the first dose, and computing a third image of the region of interest using data from the first and second images. A threshold can be identified for determining data from the first and second images to be used in computing the third image. A dual pulse imaging system is also provided.
摘要翻译： 提供双脉冲成像方法，包括以下步骤：通过传送第一剂量的第一脉冲产生感兴趣区域的第一图像，通过传送不同于第一剂量的第二剂量的第二脉冲产生感兴趣区域的第二图像 并且使用来自第一和第二图像的数据计算感兴趣区域的第三图像。 可以识别用于从用于计算第三图像的第一和第二图像确定数据的阈值。 还提供了双脉冲成像系统。
-
公开(公告)号：US20070081628A1
公开(公告)日：2007-04-12
申请号：US11406570
申请日：2006-04-18
IPC分类号： G01N23/04
CPC分类号： G01N23/04
摘要： A dual pulse imaging method is provided comprising the steps of generating a first image of a region of interest by a first pulse delivering a first dose, generating a second image of the region of interest by a second pulse delivering a second dose different from the first dose, and computing a third image of the region of interest using data from the first and second images. A threshold can be identified for determining data from the first and second images to be used in computing the third image. A dual pulse imaging system is also provided.
摘要翻译： 提供双脉冲成像方法，包括以下步骤：通过传送第一剂量的第一脉冲产生感兴趣区域的第一图像，通过传送不同于第一剂量的第二剂量的第二脉冲产生感兴趣区域的第二图像 并且使用来自第一和第二图像的数据计算感兴趣区域的第三图像。 可以识别用于从用于计算第三图像的第一和第二图像确定数据的阈值。 还提供了双脉冲成像系统。
-
公开(公告)号：US20060256925A1
公开(公告)日：2006-11-16
申请号：US11127343
申请日：2005-05-11
申请人： Gary Virshup , James Boye , Edward Seppi , Heinrich Riem , Govin Dasani , Edward Shapiro
发明人： Gary Virshup , James Boye , Edward Seppi , Heinrich Riem , Govin Dasani , Edward Shapiro
IPC分类号： G21K3/00
CPC分类号： G21K1/10
摘要： Devices and methods for implementing selective, or asymmetric, attenuation of an x-ray beam. In one example, a filter is provided that is substantially in the form of a wedge where some portions of the filter are thicker, and thus provide greater attenuation, than other, thinner portions of the filter. The filter is situated between the target surface of the anode and the x-ray subject so that x-rays generated by the target pass through the filter before reaching the x-ray subject. Specifically, the filter is oriented so that the thicker portion of the filter receives the higher intensity portion of the x-ray beam, while the thinner portion of the filter receives the relatively lower intensity portion of the x-ray beam. Thus, the gain profile of the x-ray beam is flattened so that the intensity, or flux, of the x-ray beam is relatively uniform throughout a substantial portion of the beam profile.
摘要翻译： 用于实现X射线束的选择性或不对称衰减的装置和方法。 在一个示例中，提供基本上为楔形件的过滤器，其中过滤器的一些部分比过滤器的其它较薄部分更厚，因此提供更大的衰减。 过滤器位于阳极的目标表面和X射线对象之间，使得由目标产生的x射线在到达x射线物体之前通过过滤器。 具体地，过滤器被定向成使得过滤器的较厚部分接收x射线束的较高强度部分，而过滤器的较薄部分接收x射线束的较低强度部分。 因此，x射线束的增益分布被平坦化，使得x射线束的强度或通量在光束轮廓的整个实质部分中相对均匀。
-
公开(公告)号：US07397904B2
公开(公告)日：2008-07-08
申请号：US11127343
申请日：2005-05-11
申请人： Gary Virshup , James Boye , Edward J. Seppi , Heinrich Riem , Govin Dasani , Edward Shapiro
发明人： Gary Virshup , James Boye , Edward J. Seppi , Heinrich Riem , Govin Dasani , Edward Shapiro
IPC分类号： G21K3/00
CPC分类号： G21K1/10
摘要： Devices and methods for implementing selective, or asymmetric, attenuation of an x-ray beam. In one example, a filter is provided that is substantially in the form of a wedge where some portions of the filter are thicker, and thus provide greater attenuation, than other, thinner portions of the filter. The filter is situated between the target surface of the anode and the x-ray subject so that x-rays generated by the target pass through the filter before reaching the x-ray subject. Specifically, the filter is oriented so that the thicker portion of the filter receives the higher intensity portion of the x-ray beam, while the thinner portion of the filter receives the relatively lower intensity portion of the x-ray beam. Thus, the gain profile of the x-ray beam is flattened so that the intensity, or flux, of the x-ray beam is relatively uniform throughout a substantial portion of the beam profile.
摘要翻译： 用于实现X射线束的选择性或不对称衰减的装置和方法。 在一个示例中，提供基本上为楔形件的过滤器，其中过滤器的一些部分比过滤器的其它较薄部分更厚，因此提供更大的衰减。 过滤器位于阳极的目标表面和X射线对象之间，使得由目标产生的x射线在到达x射线物体之前通过过滤器。 具体地，过滤器被定向成使得过滤器的较厚部分接收x射线束的较高强度部分，而过滤器的较薄部分接收x射线束的较低强度部分。 因此，x射线束的增益分布被平坦化，使得x射线束的强度或通量在光束轮廓的整个实质部分中相对均匀。
-
-
-
搜索结果
4 条记录 (耗时 0.018 秒)
