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. 发明申请

US20070189443A1 DETECTION OF THROMBI IN CT USING ENERGY DISCRIMINATION 失效
标题翻译：使用能量歧视检测CT中的血栓
公开(公告)号：US20070189443A1
公开(公告)日：2007-08-16
申请号：US11692086
申请日：2007-03-27
申请人： Deborah Walter , Yanfeng Du , Kelly Piacsek
发明人： Deborah Walter , Yanfeng Du , Kelly Piacsek
IPC分类号： A61B6/00 , H05G1/60 , G01N23/00 , G21K1/12
CPC分类号： A61B6/405 , A61B6/032 , A61B6/4035 , A61B6/4042 , A61B6/4241 , A61B6/481 , A61B6/482 , A61B6/504 , A61B6/583 , G06T7/0012 , G06T7/136 , G06T2207/10081 , G06T2207/30032 , G06T2207/30101
摘要： An imaging scanner includes a radiation source, a radiation detector, and a computer programmed to decompose CT data acquired by the radiation detector into a set of pixels, each pixel having at least a first basis material content and a second basis material content. The computer is further programmed to identify a first subset of the set of pixels as a possible embolism, based on the content of the first basis material and the content of the second basis material.
摘要翻译：成像扫描器包括辐射源，辐射检测器和被编程为将由辐射检测器获取的CT数据分解成一组像素的计算机，每个像素具有至少第一基础材料内容和第二基础材料内容。计算机还被编程为基于第一基础材料的内容和第二基础材料的内容，将该组像素的第一子集识别为可能的栓塞。

2. 发明申请

US20060109953A1 CT COLONOGRAPHY SYSTEM 失效
标题翻译： CT COLONOGRAPHY系统
公开(公告)号：US20060109953A1
公开(公告)日：2006-05-25
申请号：US10904630
申请日：2004-11-19
申请人： Deborah Walter , Kelly Piacsek
发明人： Deborah Walter , Kelly Piacsek
IPC分类号： H05G1/60 , A61B6/00 , G01N23/00 , G21K1/12
CPC分类号： A61B6/405 , A61B6/032 , A61B6/4035 , A61B6/4042 , A61B6/4241 , A61B6/482
摘要： A method and system of CT colonography is presented that includes the acquisition of energy sensitive or energy-discriminating CT data from a colorectal region of a subject. CT data is acquired and decomposed into basis material density maps and used to differentiate and enhance contrast between tissues in the colorectal region. The invention is particularly applicable with the detection of colon polyps without cathartic preparation or insufflation of the colorectal region. The invention is further directed to the automatic detection of colon polyps.
摘要翻译：提出了CT结肠造影的方法和系统，其包括从受试者的结肠直肠区域获取能量敏感或能量鉴别CT数据。 CT数据获取并分解为基础材料密度图，用于区分和增强结肠直肠区域组织之间的对比度。本发明特别适用于结肠息肉的检测，无需通气制剂或结肠直肠区域的吹入。本发明还涉及结肠息肉的自动检测。

3. 发明授权

US07583779B2 System and method for acquisition and reconstruction of contrast-enhanced, artifact-reduced CT images 有权
标题翻译：对比度增强，神经减影CT图像的采集和重建的系统和方法
公开(公告)号：US07583779B2
公开(公告)日：2009-09-01
申请号：US10904716
申请日：2004-11-24
申请人： J. Eric Tkaczyk , Deborah Walter , Yanfeng Du
发明人： J. Eric Tkaczyk , Deborah Walter , Yanfeng Du
IPC分类号： A61B6/00
CPC分类号： A61B6/032 , A61B6/4035 , A61B6/4241 , A61B6/482 , A61B6/5258 , A61B6/542 , G01N2223/419 , G01N2223/423 , G06T11/006
摘要： A system and method are disclosed for reconstructing contrast-enhanced CT images that are substantially free of beam-hardening artifacts. An imaging system includes a radiation source configured to project radiation toward an object to be scanned and an energy discriminating detector assembly having a plurality of detector elements and configured to detect radiation emitted by the radiation source and attenuated by the object to be scanned. The imaging system also includes computer programmed to count a number of photons detected by each detector element and associate an energy value to each counted photon and determine a material composition of a CT view from the number of photons counted and the energy value associated with each counted photon. The computer is also programmed to apply a weighting to the CT view based on the material composition of the CT view and reconstruct an image with differential weighting based on the weighting of the CT view.
摘要翻译：公开了一种系统和方法，用于重建基本上没有束固化假象的对比度增强的CT图像。成像系统包括被配置为向待扫描的物体投射辐射的辐射源，以及具有多个检测器元件并被配置为检测由辐射源发射并被被扫描物体衰减的辐射的能量鉴别检测器组件。成像系统还包括被编程为对每个检测器元件检测到的数量的光子进行计数的计算机，并将能量值与每个计数光子相关联并且根据所计数的光子数量和与每个计数相关联的能量值确定CT视图的材料组成光子。计算机还被编程为基于CT视图的材料组成对CT视图应用加权，并且基于CT视图的加权重建具有差分加权的图像。

4. 发明申请

US20070092066A1 X-RAY FILTER HAVING DYNAMICALLY DISPLACEABLE X-RAY ATTENUATING FLUID 失效
标题翻译：具有动态位移X射线衰减流体的X射线滤镜
公开(公告)号：US20070092066A1
公开(公告)日：2007-04-26
申请号：US11163496
申请日：2005-10-20
申请人： J. Tkaczyk , Deborah Walter , Xiaoye Wu , Brian Bales , James Leblanc , Yanfeng Du
发明人： J. Tkaczyk , Deborah Walter , Xiaoye Wu , Brian Bales , James 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。

5. 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.

6. 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。

7. 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。

8. 发明申请

US20060109949A1 SYSTEM AND METHOD FOR ACQUISITION AND RECONSTRUCTION OF CONTRAST-ENHANCED, ARTIFACT-REDUCED CT IMAGES 有权
标题翻译：对比增强，减少CT图像的获取和重建的系统和方法
公开(公告)号：US20060109949A1
公开(公告)日：2006-05-25
申请号：US10904716
申请日：2004-11-24
申请人： J. Tkaczyk , Deborah Walter , Yanfeng Du
发明人： J. Tkaczyk , Deborah Walter , Yanfeng Du
IPC分类号： H05G1/60 , A61B6/00 , G01N23/00 , G21K1/12
CPC分类号： A61B6/032 , A61B6/4035 , A61B6/4241 , A61B6/482 , A61B6/5258 , A61B6/542 , G01N2223/419 , G01N2223/423 , G06T11/006
摘要： A system and method are disclosed for reconstructing contrast-enhanced CT images that are substantially free of beam-hardening artifacts. An imaging system includes a radiation source configured to project radiation toward an object to be scanned and an energy discriminating detector assembly having a plurality of detector elements and configured to detect radiation emitted by the radiation source and attenuated by the object to be scanned. The imaging system also includes computer programmed to count a number of photons detected by each detector element and associate an energy value to each counted photon and determine a material composition of a CT view from the number of photons counted and the energy value associated with each counted photon. The computer is also programmed to apply a weighting to the CT view based on the material composition of the CT view and reconstruct an image with differential weighting based on the weighting of the CT view.
摘要翻译：公开了一种系统和方法，用于重建基本上没有束固化假象的对比度增强的CT图像。成像系统包括被配置为向待扫描的物体投射辐射的辐射源，以及具有多个检测器元件并被配置为检测由辐射源发射并被被扫描物体衰减的辐射的能量鉴别检测器组件。成像系统还包括被编程为对每个检测器元件检测到的数量的光子进行计数的计算机，并将能量值与每个计数光子相关联并且根据所计数的光子数量和与每个计数相关联的能量值确定CT视图的材料组成光子。计算机还被编程为基于CT视图的材料组成对CT视图应用加权，并且基于CT视图的加权重建具有差分加权的图像。

9. 发明申请

US20070098641A1 Nanoparticle-based imaging agents for X-ray/computed tomography 审中-公开
公开(公告)号：US20070098641A1
公开(公告)日：2007-05-03
申请号：US11265728
申请日：2005-11-02
申请人： Peter Bonitatebus , Oskar Axelsson , Amit Kulkarni , Brian Bales , Deborah Walter , Andrew Torres , Chiaki Treynor
发明人： Peter Bonitatebus , Oskar Axelsson , Amit Kulkarni , Brian Bales , Deborah Walter , Andrew Torres , Chiaki Treynor
IPC分类号： A61K49/04
CPC分类号： C09C1/00 , A61K49/0423 , B82Y5/00 , B82Y30/00 , C01G27/02 , C01P2004/04 , C01P2004/64 , C09C1/24 , C09C3/08 , C09C3/12
摘要： The present invention is generally directed to core/shell nanoparticles, wherein such core/shell nanoparticles comprise a nanoparticle core and a nanoshell disposed about the nanoparticle core such that, in the aggregate, they form a core/shell nanoparticle that is operable for use as an imaging agent in X-ray/computed tomography (CT). Typically, such core/shell nanoparticle-based X-ray CT imaging agents further comprise a targeting species for targeting the imaging agent to diseased sites.

10. 发明授权

US07054409B2 Volumetric CT system and method utilizing multiple detector panels 失效
标题翻译：体积CT系统和利用多个检测器面板的方法
公开(公告)号：US07054409B2
公开(公告)日：2006-05-30
申请号：US10334302
申请日：2002-12-31
申请人： William Ross , Peter Michael Edic , Samit Basu , Nadeem Ishaque , Deborah Walter , John McLeod
发明人： William Ross , Peter Michael Edic , Samit Basu , Nadeem Ishaque , Deborah Walter , John McLeod
IPC分类号： A61B6/00
CPC分类号： A61B6/032 , A61B6/4014 , A61B6/469 , A61B6/503 , A61B6/508 , A61B6/563 , G01N23/046 , G01N2223/419 , G01N2223/612 , G01T1/2985
摘要： A method and apparatus for providing a configurable field of view in a non-invasive imaging system, such as a CT medical imaging system. A detector structure comprising two or more flat-panel X-ray detectors is provided such that the configurable field of view may encompass the full area of the two or more X-ray detectors or any suitable subset of the full area. The field of view may be configured based upon an acceptable field of view in conjunction with an acceptable scan speed.
摘要翻译：一种用于在诸如CT医学成像系统的非侵入性成像系统中提供可配置视野的方法和装置。提供包括两个或更多个平板X射线检测器的检测器结构，使得可配置视场可以包含两个或更多个X射线检测器的全部区域或者整个区域的任何合适的子集。可以基于可接受的视场结合可接受的扫描速度来配置视野。

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