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71. 发明授权

US07238945B2 CT detector having a segmented optical coupler and method of manufacturing same 有权
标题翻译： CT检测器具有分段光耦合器及其制造方法
公开(公告)号：US07238945B2
公开(公告)日：2007-07-03
申请号：US11164036
申请日：2005-11-08
申请人： David M. Hoffman , Michael F. Hoge
发明人： David M. Hoffman , Michael F. Hoge
IPC分类号： G01T1/24
CPC分类号： G01T1/2018 , A61B6/032 , A61B6/4291 , G01N23/046 , G01N2223/419 , G01N2223/612 , G01T1/2002 , G01T1/202 , G01T1/2985
摘要： The present invention is a directed to a CT detector for a CT imaging system that incorporates a segmented optical coupler between a photodiode array and a scintillator array. The segmented optical coupler also operates as a light collimator which improves the light collection efficiency of the photodiode array. The segmented optical coupler is defined by a series of reflector elements that collectively form a plurality of open cells. The open cells form light transmission cavities and facilitate the collimation of light from a scintillator to a photodiode. The cavities may be filled with optical epoxy for sealing to the photodiode array.
摘要翻译：本发明涉及一种用于CT成像系统的CT检测器，其中包括光电二极管阵列和闪烁体阵列之间的分段光耦合器。分段光耦合器还用作光准直器，其提高了光电二极管阵列的光收集效率。分段光耦合器由共同形成多个开放单元的一系列反射器元件限定。开放的电池形成光透射腔，并促进从闪烁体到光电二极管的准直。空腔可以填充有光学环氧树脂以密封到光电二极管阵列。

72. 发明授权

US07224766B2 CT detector array having non-pixelated scintillator array 有权
标题翻译：具有非象素化闪烁体阵列的CT检测器阵列
公开(公告)号：US07224766B2
公开(公告)日：2007-05-29
申请号：US11029612
申请日：2005-01-04
申请人： Haochuan Jiang , David M. Hoffman , James S. Vartuli
发明人： Haochuan Jiang , David M. Hoffman , James S. Vartuli
IPC分类号： H05G1/60 , G01T1/20 , C09K11/08 , C09K11/77
CPC分类号： G01T1/2985 , A61B6/032 , A61B6/4233 , G01N23/046 , G01N2223/419 , G01T1/1644 , G01T1/201 , G21K1/02
摘要： The present invention is a directed to a non-pixelated scintillator array for a CT detector as well as an apparatus and method of manufacturing same. The scintillator array is comprised of a number of ceramic fibers or single crystal fibers that are aligned in parallel with respect to one another. As a result, the pack has very high dose efficiency. Furthermore, each fiber is designed to direct light out to a photodiode with very low scattering loss. The fiber size (cross-sectional diameter) may be controlled such that smaller fibers may be fabricated for higher resolution applications. Moreover, because the fiber size can be controlled to be consistent throughout the scintillator array and the fibers are aligned in parallel with one another, the scintillator array, as a whole, also is uniform. Therefore, precise alignment with the photodiode array or the collimator assembly is not necessary.
摘要翻译：本发明涉及一种用于CT检测器的非像素化闪烁体阵列以及其制造方法。闪烁体阵列包括相对于彼此平行对准的多个陶瓷纤维或单晶纤维。因此，该包装具有非常高的剂量效率。此外，每个光纤被设计成将光引导到具有非常低的散射损耗的光电二极管。可以控制纤维尺寸（横截面直径），使得可以制造更小的纤维用于更高分辨率的应用。此外，由于可以将整个闪烁体阵列的纤维尺寸控制为一致，并且纤维彼此平行排列，所以闪烁体阵列整体上也是均匀的。因此，不需要与光电二极管阵列或准直器组件的精确对准。

73. 发明授权

US07200201B2 Flat panel detector based slot scanning configuration 有权
标题翻译：基于平板检测器的插槽扫描配置
公开(公告)号：US07200201B2
公开(公告)日：2007-04-03
申请号：US10990267
申请日：2004-11-16
申请人： Christopher D. Unger , David M. Hoffman , Vivek Bhatt
发明人： Christopher D. Unger , David M. Hoffman , Vivek Bhatt
IPC分类号： G01N23/04
CPC分类号： G01T1/2018 , A61B6/027 , A61B6/06 , A61B6/4233 , A61B6/4291 , A61B6/588 , G01N23/04 , G01N23/20
摘要： The present invention relates to a diagnostic X-ray device, system or apparatus for performing diagnostic radiology and a method of configuring such a diagnostic X-ray device, system or apparatus. More specifically, the present invention relates to a diagnostic system for forming at least one image of an object having enhanced contrast. The system comprises a beam source adapted to produce an imaging beam and a masking member adapted to form at least one beam portion from the imaging beam and adapted to image the object. The system further comprises a flat panel detector positioned in a path of at least one beam portion penetrating the object and adapted to form at least one image of the object.
摘要翻译：本发明涉及用于执行诊断放射学的诊断X射线装置，系统或装置以及配置这种诊断X射线装置，系统或装置的方法。更具体地，本发明涉及用于形成具有增强的对比度的物体的至少一个图像的诊断系统。该系统包括适于产生成像光束的光束源和适于从成像光束形成至少一个光束部分并适于对物体成像的掩蔽部件。该系统还包括平板检测器，该平板检测器定位在至少一个光束部分穿过物体的路径中，并适于形成物体的至少一个图像。

74. 发明授权

US07120222B2 CT imaging system with multiple peak x-ray source 有权
标题翻译： CT成像系统具有多峰X射线源
公开(公告)号：US07120222B2
公开(公告)日：2006-10-10
申请号：US10250132
申请日：2003-06-05
申请人： David M. Hoffman
发明人： David M. Hoffman
IPC分类号： H05G1/02 , H01J35/06 , G21K3/00
CPC分类号： A61B6/032 , A61B6/027 , A61B6/4007 , A61B6/4021 , A61B6/4035 , A61B6/4241 , A61B6/482 , H01J35/06 , H01J2235/068
摘要： An x-ray source (32) for performing energy discrimination within an imaging system (10) includes a cathode-emitting device (82) emitting electrons and an anode (81) that has a target (80) whereupon the electrons impinge to generate an x-ray beam (93) with multiple x-ray quantity energy peaks (116 and 120). A method of performing energy discrimination in the imaging system (10) includes emitting the electrons. The x-ray beam (93) with the x-ray quantity energy peaks (116 and 120) is generated. The x-ray beam (93) is directed through an object (44) and is received. An x-ray image having multiple energy differentiable characteristics is generated in response to the x-ray beam (93).
摘要翻译：用于在成像系统（10）内执行能量鉴别的x射线源（32）包括发射电子的阴极发射器件（82）和具有靶（80）的阳极（81），因此电子撞击以产生 x射线束（93）具有多个x射线量能量峰（116和120）。在成像系统（10）中执行能量鉴别的方法包括发射电子。产生具有x射线量能量峰值（116和120）的x射线束（93）。 x射线束（93）被引导通过物体（44）并被接收。响应于X射线束（93）产生具有多个能量可微特性的X射线图像。

75. 发明授权

US07102137B2 Method and apparatus for improving slice to slice resolution by staggering cells in the Z-axis 有权
标题翻译：通过在Z轴上交错单元来提高切片分辨率的方法和装置
公开(公告)号：US07102137B2
公开(公告)日：2006-09-05
申请号：US10668587
申请日：2003-09-23
申请人： David M. Hoffman
发明人： David M. Hoffman
IPC分类号： G01T1/20 , G01N23/00
CPC分类号： G01T1/2018 , G01T1/1644
摘要： The present invention provides a CT detector module with cell summing in the Z-direction and cell staggering in the X-direction. The present invention also provides a method for implementing the present invention by simply combining the cells in the Z-direction. The staggering of the cells in the Z-axis improves the signal sampling in the Z-direction without changing either the X-axis or Y-axis resolution. In effect, this provides spatial resolution in the Z-direction.
摘要翻译：本发明提供了一种CT检测器模块，其具有在Z方向上的单元相加和在X方向上的单元交错。本发明还提供了通过简单地组合Z方向上的单元来实现本发明的方法。 Z轴上的单元格的交错改善了Z方向上的信号采样，而不改变X轴或Y轴分辨率。实际上，这提供了Z方向上的空间分辨率。

76. 发明授权

US07068750B2 System and method of x-ray flux management control 有权
标题翻译： x射线通量管理控制系统与方法
公开(公告)号：US07068750B2
公开(公告)日：2006-06-27
申请号：US10765582
申请日：2004-01-27
申请人： Thomas L. Toth , David M. Hoffman
发明人： Thomas L. Toth , David M. Hoffman
IPC分类号： A61B6/03 , G21K3/00
CPC分类号： A61B6/032 , A61B6/4035 , A61B6/4241 , A61B6/4488 , A61B6/469 , A61B6/488 , A61B6/544 , A61B6/583
摘要： A system and method of diagnostic imaging is provided that includes determining a position of a subject in a scanning bay and tailoring x-ray attenuation such that the specific position of the subject is taken into consideration. The present invention automatically selects a proper attenuation filter configuration, corrects patient centering, and corrects noise prediction errors, thereby increasing dose efficiency and tube output.
摘要翻译：提供了诊断成像的系统和方法，其包括确定扫描间隔中的对象的位置并调整x射线衰减，使得考虑对象的特定位置。本发明自动选择适当的衰减滤波器配置，校正患者居中，并且校正噪声预测误差，从而提高剂量效率和管输出。

77. 发明授权

US07050529B2 Methods and apparatus for performing a computed tomography scan 失效
标题翻译：用于执行计算机断层扫描的方法和装置
公开(公告)号：US07050529B2
公开(公告)日：2006-05-23
申请号：US10064511
申请日：2002-07-23
申请人： David M. Hoffman
发明人： David M. Hoffman
IPC分类号： G01N23/00
CPC分类号： A61B6/032 , A61B6/4035 , A61B6/405 , A61B6/4085 , A61B6/4241 , A61B6/482
摘要： A computed tomographic (CT) imaging system for performing a CT scan includes a detector array including a plurality of detector cells and a processor operationally coupled to the detector array. The processor is configured to receive first data regarding a first x-ray spectral range from a first detector cell, receive second data regarding a second x-ray spectral range different from the first x-ray spectral range from a second detector cell different from the first detector cell, and determine spectral information from the first data and the second data.
摘要翻译：用于执行CT扫描的计算机断层摄影（CT）成像系统包括包括多个检测器单元的检测器阵列和可操作地耦合到检测器阵列的处理器。处理器被配置为从第一检测器单元接收关于第一x射线光谱范围的第一数据，从与第一X射线光谱范围不同的第二检测器单元接收关于与第一x射线光谱范围不同的第二x射线光谱范围的第二数据第一检测器单元，并且从第一数据和第二数据确定光谱信息。

78. 发明授权

US07034313B2 CT detector fabrication process 有权
标题翻译： CT检测器制造工艺
公开(公告)号：US07034313B2
公开(公告)日：2006-04-25
申请号：US11160112
申请日：2005-06-09
申请人： David M. Hoffman
发明人： David M. Hoffman
IPC分类号： G01T1/24
CPC分类号： G01T1/242 , G01T1/249
摘要： A CT detector capable of energy discrimination and direct conversion is disclosed. The detector includes multiple layers of semiconductor material with the layers having varying thicknesses. The detector is constructed to be segmented in the x-ray penetration direction so as to optimize count rate performance as well as avoid saturation.
摘要翻译：公开了能够鉴别和直接转换的CT检测器。检测器包括多层半导体材料，其中层具有变化的厚度。检测器被构造成在x射线穿透方向上分段，以便优化计数率性能以及避免饱和。

79. 发明授权

US06947517B2 Scintillator array having a reflector with integrated air gaps 失效
标题翻译：闪烁体阵列具有具有集成气隙的反射器
公开(公告)号：US06947517B2
公开(公告)日：2005-09-20
申请号：US10248930
申请日：2003-03-03
申请人： David M. Hoffman
发明人： David M. Hoffman
IPC分类号： G01N23/00 , G01T1/20 , G01T1/29 , H05G1/64
CPC分类号： G01T1/2002 , G01T1/2985
摘要： The present invention is directed to a scintillator array having an integrated air gap. By integrating an air gap within the reflector, light collection efficiency is improved while simultaneously lowering cross-talk between scintillators. That is, implementing a reflector without chromium oxide (Cr2O3) increases light reflectivity and an air gap lowers cross talk through the reflector. To further improve the reflectivity, the base reflector material may be coated with a low index material and a reflective material such as silver.
摘要翻译：本发明涉及具有一体气隙的闪烁体阵列。通过在反射器内集成气隙，提高了光收集效率，同时降低了闪烁体之间的串扰。也就是说，实现没有氧化铬（Cr 2 O 3 O 3）的反射器增加了光反射率，并且气隙降低了通过反射器的串扰。为了进一步提高反射率，基底反射器材料可以涂覆有低折射率材料和诸如银的反射材料。

80. 发明授权

US06934354B2 Collimator assembly having multi-piece components 有权
标题翻译：具有多片组件的准直器组件
公开(公告)号：US06934354B2
公开(公告)日：2005-08-23
申请号：US10249714
申请日：2003-05-02
申请人： David M. Hoffman
发明人： David M. Hoffman
IPC分类号： A61B6/03 , A61B6/06 , G01N23/04 , G01T1/164 , G21K1/02 , A61B6/00
CPC分类号： G01T1/1648 , A61B6/032 , A61B6/06 , A61B6/4233 , G01N23/046 , G01N2223/419 , G01N2223/612 , G21K1/025
摘要： The present invention is directed to a collimator assembly defined by a series of multi-piece collimator elements or plates that extend along at least one dimension of a scintillator pack. Each collimator element has a collimating component and a shielding component that are structurally independent from one another. The collimating components may be connected to the shielding components or separated by a small air gap. The shielding components are wider than the collimating components but the collimating components have a greater height. With this construction, the collimator assembly optimizes collimation and shielding with lower material requirements and reduced overall size.
摘要翻译：本发明涉及由沿着闪烁体组件的至少一个维度延伸的一系列多片准直器元件或板限定的准直器组件。每个准直器元件具有在结构上彼此独立的准直部件和屏蔽部件。准直部件可以连接到屏蔽部件或由小的气隙隔开。屏蔽部件比准直部件宽，但是准直部件具有更大的高度。通过这种结构，准直器组件可以以较低的材料要求和总体尺寸来优化准直和屏蔽。

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