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1. 发明申请

US20070003006A1 Multi-layer direct conversion computed tomography detector module 有权
公开(公告)号：US20070003006A1
公开(公告)日：2007-01-04
申请号：US11171169
申请日：2005-06-29
申请人： John Tkaczyk , James Leblanc , Wen Li , Deborah Walter , Yanfeng Du
发明人： John Tkaczyk , James Leblanc , Wen Li , Deborah Walter , Yanfeng Du
IPC分类号： H05G1/60 , A61B6/00 , G01N23/00 , G21K1/12
CPC分类号： G01T1/2985 , G01T1/241 , G01T1/242 , G01T1/243 , G01T1/249
摘要： A computed tomography detector module is presented. The detector module includes a substrate having a topside and a bottom side. Additionally, the detector module includes a plurality of detector layers disposed on the top side of the substrate in a direction that is substantially orthogonal to the substrate, where each of the plurality of detector layers comprises a direct conversion material configured to absorb radiation, and where each of the plurality of detector layers comprises a first side and a second side. Further, the detector module includes a plurality of pixelated anode contacts is disposed on the first side of each of the plurality of detector layers. Also, the detector module includes a common cathode contact is disposed on the second side of each of the plurality of detector layers.

2. 发明申请

US20070076848A1 Direct conversion X-ray detector with over-range and pile-up correction 失效
标题翻译：具有超范围和堆积校正的直接转换X射线检测器
公开(公告)号：US20070076848A1
公开(公告)日：2007-04-05
申请号：US11239962
申请日：2005-09-30
申请人： Deborah Walter , John Tkaczyk , Yanfeng Du
发明人： Deborah Walter , John Tkaczyk , Yanfeng Du
IPC分类号： H05G1/64
CPC分类号： A61B6/032 , A61B6/4241 , A61B6/585 , G01T1/171
摘要： A method of scanning a subject to be imaged is presented. The method includes acquiring projection data from a first region of a pixel, where the first region has a first area. Additionally, the method includes acquiring projection data from a second region of the pixel, where the second region has a second area. The method also includes combining projection data from the first and second regions to obtain composite projection data for the pixel. Computer-readable medium and systems that afford functionality of the type defined by this method are also contemplated in conjunction with the present technique.
摘要翻译：呈现扫描被摄体的方法。该方法包括从像素的第一区域获取投影数据，其中第一区域具有第一区域。另外，该方法包括从像素的第二区域获取投影数据，其中第二区域具有第二区域。该方法还包括组合来自第一和第二区域的投影数据以获得像素的复合投影数据。计算机可读介质和提供由该方法定义的类型的功能的系统也结合本技术考虑。

3. 发明申请

US20070076842A1 Adaptable energy discriminating computed tomography system 审中-公开
标题翻译：适应能量识别计算机断层扫描系统
公开(公告)号：US20070076842A1
公开(公告)日：2007-04-05
申请号：US11239842
申请日：2005-09-30
申请人： John Tkaczyk , Deborah Walter , Yanfeng Du , David Hoffman , Thomas Toth
发明人： John Tkaczyk , Deborah Walter , Yanfeng Du , David Hoffman , Thomas Toth
IPC分类号： H05G1/60 , H05G1/44 , A61B6/00 , G01N23/00 , G21K1/12
CPC分类号： A61B6/032 , A61B6/4035 , A61B6/4042 , A61B6/405 , A61B6/4085 , A61B6/4241 , A61B6/463 , A61B6/466 , A61B6/469 , A61B6/482 , A61B6/488 , A61B6/503 , A61B6/504 , A61B6/544
摘要： A method of enhancing image quality and providing tissue composition information by analysis of energy discrimination data, the method comprising determining a radiation dosage at one or more energy spectrum levels based on patient parameters and user selected parameters. Computer-readable medium and systems that afford functionality of the type defined by this method are also contemplated in conjunction with the present technique.
摘要翻译：一种通过分析能量鉴别数据来增强图像质量和提供组织组成信息的方法，所述方法包括基于患者参数和用户选择的参数来确定一个或多个能量级别的辐射剂量。计算机可读介质和提供由该方法定义的类型的功能的系统也结合本技术考虑。

4. 发明申请

US20080304618A1 DIRECT CONVERSION ENERGY DISCRIMINATING CT DETECTOR WITH OVER-RANGING CORRECTION 失效
标题翻译：直接转换能量分辨率超过范围校正的CT检测器
公开(公告)号：US20080304618A1
公开(公告)日：2008-12-11
申请号：US12194072
申请日：2008-08-19
申请人： David M. Hoffman , James LeBlanc , John Tkaczyk , Robert F. Senzig , Yanfeng Du
发明人： David M. Hoffman , James LeBlanc , John Tkaczyk , Robert F. Senzig , Yanfeng Du
IPC分类号： A61B6/00
CPC分类号： G01T1/2928 , A61B6/032 , A61B6/4241 , A61B6/5205
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. The detector also includes variable pixel pitch and a flexible binning of pixels to further enhance count rate performance.
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。检测器还包括可变像素间距和灵活的像素分组，以进一步提高计数率性能。

5. 发明申请

US20070206722A1 DIRECT CONVERSION ENERGY DISCRIMINATING CT DETECTOR WITH OVER-RANGING CORRECTION 有权
公开(公告)号：US20070206722A1
公开(公告)日：2007-09-06
申请号：US11745856
申请日：2007-05-08
申请人： David Hoffman , James LeBlanc , John Tkaczyk , Robert Senzig , Yanfeng Du
发明人： David Hoffman , James LeBlanc , John Tkaczyk , Robert Senzig , Yanfeng Du
IPC分类号： G01N23/083 , G01T1/16
CPC分类号： G01T1/2928 , A61B6/032 , A61B6/4241 , A61B6/5205
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. The detector also includes variable pixel pitch and a flexible binning of pixels to further enhance count rate performance.

6. 发明申请

US20070140418A1 DIRECT CONVERSION ENERGY DISCRIMINATING CT DETECTOR WITH OVER-RANGING CORRECTION 有权
公开(公告)号：US20070140418A1
公开(公告)日：2007-06-21
申请号：US11677963
申请日：2007-02-22
申请人： David Hoffman , James LeBlanc , John Tkaczyk , Robert Senzig , Yanfeng Du
发明人： David Hoffman , James LeBlanc , John Tkaczyk , Robert Senzig , Yanfeng Du
IPC分类号： H05G1/60 , A61B6/00 , G01N23/00 , G21K1/12
CPC分类号： G01T1/2928 , A61B6/032 , A61B6/4241 , A61B6/5205
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. The detector also includes variable pixel pitch and a flexible binning of pixels to further enhance count rate performance.

7. 发明申请

US20070248209A1 DIRECT CONVERSION ENERGY DISCRIMINATING CT DETECTOR WITH OVER-RANGING CORRECTION 有权
标题翻译：直接转换能量分辨率超过范围校正的CT检测器
公开(公告)号：US20070248209A1
公开(公告)日：2007-10-25
申请号：US11768775
申请日：2007-06-26
申请人： David Hoffman , James LeBlanc , John Tkaczyk , Robert Senzig , Yanfeng Du
发明人： David Hoffman , James LeBlanc , John Tkaczyk , Robert Senzig , Yanfeng Du
IPC分类号： G01N23/00
CPC分类号： G01T1/2928 , A61B6/032 , A61B6/4241 , A61B6/5205
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. The detector also includes variable pixel pitch and a flexible binning of pixels to further enhance count rate performance.
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。检测器还包括可变像素间距和灵活的像素分组，以进一步提高计数率性能。

8. 发明授权

US07260174B2 Direct conversion energy discriminating CT detector with over-ranging correction 有权
标题翻译：直接转换能量鉴别CT检测器具有超范围校正
公开(公告)号：US07260174B2
公开(公告)日：2007-08-21
申请号：US10939787
申请日：2004-09-13
申请人： David M. Hoffman , James LeBlanc , John Tkaczyk , Robert F. Senzig , Yanfeng Du
发明人： David M. Hoffman , James LeBlanc , John Tkaczyk , Robert F. Senzig , Yanfeng Du
IPC分类号： A61B6/03 , G01T1/161
CPC分类号： G01T1/2928 , A61B6/032 , A61B6/4241 , A61B6/5205
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. The detector also includes variable pixel pitch and a flexible binning of pixels to further enhance count rate performance.
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。检测器还包括可变像素间距和灵活的像素分组，以进一步提高计数率性能。

9. 发明申请

US20070120062A1 Subpixel routing and processing for an imaging sytstem or the like 有权
标题翻译：用于成像系统的子像素路由和处理等
公开(公告)号：US20070120062A1
公开(公告)日：2007-05-31
申请号：US11291273
申请日：2005-11-30
申请人： Wen Li , John Tkaczyk , Yanfeng Du , James Leblanc
发明人： Wen Li , John Tkaczyk , Yanfeng Du , James Leblanc
IPC分类号： G01T1/24 , G01T1/26 , H01L27/146
CPC分类号： H01L27/14603 , G01T1/2928 , H01L27/14659
摘要： Briefly, in accordance with one or more embodiments, count rates may be obtained from one or more subpixels for a given pixel in an imaging system detector. Count rates may be obtained from individual subpixels, or may be from electronically binned subpixels at least in part in various subpixel arrangements where a selected subpixel arrangement may be adaptively set according to a detected count rate. For lower count rates, two or more subpixels may be electronically binned together and the counts may be obtained from the binned subpixels, for example to mitigate a charge sharing effect. For higher count rates, the count rates of a greater number of subpixels may be individually obtained, for example to mitigate a pulse pile-up effect. Detective quantum efficiency may be optimized over a wider range of photon flux rate via the adaptive subpixel arrangement.
摘要翻译：简而言之，根据一个或多个实施例，可以从成像系统检测器中的给定像素的一个或多个子像素获得计数率。可以从各个子像素获得计数速率，或者可以至少部分地根据检测到的计数速率自适应地选择所选择的子像素排列的各种子像素排列从电子分组的子像素获得。对于较低的计数率，可以将两个或更多个子像素电子地分组在一起，并且可以从二进制子像素获得计数，例如以减轻电荷共享效应。对于更高的计数率，可以单独获得更多数量的子像素的计数率，例如以减轻脉冲堆积效应。可以通过自适应子像素排列在更宽的光子通量速率范围内优化探测量子效率。

10. 发明申请

US20070116173A1 METHOD AND SYSTEM OF CT DATA CORRECTION 有权
公开(公告)号：US20070116173A1
公开(公告)日：2007-05-24
申请号：US11627072
申请日：2007-01-25
申请人： Jerome Arenson , Evgeny Drapkin , Yanfeng Du , Lev Greenberg , Oded Meirav , David Ruimi , John Tkaczyk , Xiaoye Wu
发明人： Jerome Arenson , Evgeny Drapkin , Yanfeng Du , Lev Greenberg , Oded Meirav , David Ruimi , John Tkaczyk , Xiaoye Wu
IPC分类号： A61B6/00 , H05G1/60 , G01N23/00 , G21K1/12
CPC分类号： G01T1/1644 , A61B6/027 , A61B6/032 , A61B6/4241 , A61B6/482 , A61B6/583 , G01T1/1647 , G06T5/002 , G06T5/20 , G06T2207/10081 , G06T2207/30004 , G06T2207/30112 , Y10S378/901
摘要： An adaptive CT data acquisition system and technique is presented whereby radiation emitted for CT data acquisition is dynamically controlled to limit exposure to those detectors of a CT detector assembly that may be particularly susceptible to saturation during a given data acquisition. The data acquisition technique recognizes that for a given subject size and position that pre-subject filtering and collimating of a radiation beam may be insufficient to completely prevent detector saturation. Therefore, the present invention includes implementation of a number of CT data correction techniques for correcting otherwise unusable data of a saturated CT detector. These data correction techniques include a nearest neighbor correction, off-centered phantom correction, off-centered synthetic data correction, scout data correction, planar radiogram correction, and a number of others. The invention is applicable with energy discriminating CT systems as well as with conventional CT systems and other multi-energy CT systems, such as dual kVp-based systems.

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