-
1.发明授权Method and apparatus for multiple-projection, dual-energy x-ray absorptiometry scanning 失效用于多投影双能量X射线吸收光谱扫描的方法和装置公开(公告)号：US07203274B2
公开(公告)日：2007-04-10
申请号：US10399617
申请日：2003-08-14
IPC分类号： G01N23/06
CPC分类号： A61B6/482 , A61B6/032 , A61B6/06 , A61B6/4007 , A61B6/4035 , A61B6/405 , A61B6/4233 , A61B6/4291 , A61B6/4441 , A61B6/505 , A61B6/542 , A61B6/563 , A61B6/583 , G01N23/046 , G01N2223/419 , G01N2223/612
摘要： Methods and apparatuses for advanced, multiple-projection, dual-energy X-ray absorptiometry scanning systems include combinations of a conical collimator; a high-resolution two-dimensional detector; a portable, power-capped, variable-exposure-time power supply; an exposure-time control element; calibration monitoring; a three-dimensional anti-scatter-grid; and a gantry-gantry base assembly that permits up to seven projection angles for overlapping beams. Such systems are capable of high precision bone structure measurements that can support three dimensional bone modeling and derivations of bone strength, risk of injury, and efficacy of countermeasures among other properties.
摘要翻译： 先进的多投影双能X射线吸收光谱扫描系统的方法和装置包括锥形准直仪的组合; 高分辨率二维检测器; 便携式，功率封闭，可变曝光时间电源; 曝光时间控制元件; 校准监测; 三维反散射网格; 和龙门架基座组件，其允许多达七个投影角度用于重叠梁。 这样的系统能够进行高精度的骨结构测量，其可以支持三维骨骼建模和骨强度的衍生，损伤的风险以及其他性质的对策的功效。
-
公开(公告)号：US06529582B2
公开(公告)日：2003-03-04
申请号：US09914989
申请日：2001-09-06
IPC分类号： G21K100
CPC分类号： G21K1/025
摘要： An X-ray scatter reduction grid includes a first layer having a plurality of cells. The cells have a perimeter formed of an X-ray absorbing material. The shape of the perimeters can vary, but a polygonal shape is preferred. The grid can also include other layers, each with their own cells. The cells of the subsequent other layers are larger than and offset from the cells of the prior layer. The increased size of the cells allows a primary ray passing through the center of a first layer cell to also pass through the center of a subsequent layer cell. This allows for a maximum of primary ray passthrough and a maximum of scatter absorption.
摘要翻译： X射线散射减少栅格包括具有多个单元的第一层。 细胞具有由X射线吸收材料形成的周边。 周长的形状可以变化，但是多边形形状是优选的。 网格还可以包括其他层，每层都有自己的单元格。 随后的其他层的单元大于并偏离了先前层的单元。 单元的增加的尺寸允许通过第一层单元的中心的主要的光线也通过随后的层单元的中心。 这允许最大的一次射线通过和最大的散射吸收。
-
3.发明授权Techniques for deriving tissue structure from multiple projection dual-energy x-ray absorptiometry 有权从多投影双能量X射线吸收法得出组织结构的技术公开(公告)号：US06816564B2
公开(公告)日：2004-11-09
申请号：US10415809
申请日：2003-10-21
IPC分类号： A61B603
CPC分类号： A61B6/505 , A61B6/032 , A61B6/4035 , A61B6/405 , A61B6/4233 , A61B6/4291 , A61B6/4441 , A61B6/467 , A61B6/482 , A61B6/542 , A61B6/563 , A61B6/583 , G01N23/06 , G01N2223/1003 , Y10S378/901
摘要： Techniques for deriving bone properties from images generated by a dual-energy x-ray absorptiometry apparatus include receiving first image data having pixels indicating bone mineral density projected at a first angle of a plurality of projection angles. Second image data and third image data are also received. The second image data indicates bone mineral density projected at a different second angle. The third image data indicates bone mineral density projected at a third angle. The third angle is different from the first angle and the second angle. Principal moments of inertia for a bone in the subject are computed based on the first image data, the second image data and the third image data. The techniques allow high-precision, high-resolution dual-energy x-ray attenuation images to be used for computing principal moments of inertia and strength moduli of individual bones, plus risk of injury and changes in risk of injury to a patient.
摘要翻译： 从由双能X射线吸收测定仪产生的图像中导出骨性质的技术包括接收具有以多个投影角度的第一角投影的骨矿物质密度的像素的第一图像数据。 还接收第二图像数据和第三图像数据。 第二图像数据表示以不同的第二角度投影的骨矿物质密度。 第三图像数据表示以第三角度投影的骨矿物质密度。 第三角度与第一角度和第二角度不同。 基于第一图像数据，第二图像数据和第三图像数据计算被检体中骨骼的主要惯性矩。 这些技术允许高精度，高分辨率的双能量x射线衰减图像用于计算单个骨骼的主要惯性矩和强度模量，以及损伤风险和对患者的伤害风险的变化。
-
-
搜索结果
3 条记录 (耗时 0.013 秒)
