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11. 发明授权

US09326738B2 Method and system for reduced dose X-ray imaging 有权
标题翻译：降低剂量X射线成像的方法和系统
公开(公告)号：US09326738B2
公开(公告)日：2016-05-03
申请号：US13174438
申请日：2011-06-30
申请人： Zhye Yin , Roy Arnulf Helge Nilsen , Jiahua Fan , Thomas Matthew Benson , Bruno Kristiaan Bernard De Man , Jed Douglas Pack , Kai Zeng
发明人： Zhye Yin , Roy Arnulf Helge Nilsen , Jiahua Fan , Thomas Matthew Benson , Bruno Kristiaan Bernard De Man , Jed Douglas Pack , Kai Zeng
IPC分类号： A61B6/03 , A61B6/06 , A61B6/00
CPC分类号： A61B6/032 , A61B6/06 , A61B6/405 , A61B6/4085 , A61B6/4435 , A61B6/542
摘要： Approaches for acquiring CT image data corresponding to a full scan, but at a reduced dose are disclosed. In one implementation, X-ray tube current modulation is employed to reduce the effective dose. In other implementations, acquisition of sparse views, z-collimation, and two-rotation acquisition protocols may be employed to achieve a reduced dose relative to a full-scan acquisition protocol.
摘要翻译：公开了用于获取对应于全扫描但以减小剂量的CT图像数据的方法。在一个实施方案中，采用X射线管电流调制来降低有效剂量。在其他实施方案中，可采用稀疏视图，z准直和双旋转采集协议的采集来实现相对于全扫描采集协议的减少的剂量。

12. 发明申请

US20130083986A1 METHOD AND SYSTEM FOR RECONSTRUCTION OF TOMOGRAPHIC IMAGES 有权
标题翻译：重建图像图像的方法和系统
公开(公告)号：US20130083986A1
公开(公告)日：2013-04-04
申请号：US13250753
申请日：2011-09-30
申请人： Kai Zeng , Jed Douglas Pack , Kyle Morgan Champley , Bruno Kristiaan Bernard De Man
发明人： Kai Zeng , Jed Douglas Pack , Kyle Morgan Champley , Bruno Kristiaan Bernard De Man
IPC分类号： G06K9/46
CPC分类号： G06K9/46 , G06T11/003 , G06T11/006 , G06T2211/421
摘要： Approaches are described for processing half-scan or full-scan cone beam image data using one or more half-ramp filtering operations. In one embodiment, the half-ramp filtering operations allow extraction and use of missing frequency data so as to generate a reconstructed image that is relatively complete in terms of frequency data and which has suitable temporal resolution. In addition, in certain embodiments, the reconstructed image may have uniform frequency weighting.
摘要翻译：描述了使用一个或多个半斜坡滤波操作来处理半扫描或全扫描锥形束图像数据的方法。在一个实施例中，半斜坡滤波操作允许提取和使用丢失的频率数据，以便产生在频率数据方面相对完整并且具有合适的时间分辨率的重构图像。此外，在某些实施例中，重构图像可以具有均匀的频率加权。

13. 发明授权

US08031828B1 Method and apparatus for computed tomography 有权
标题翻译：计算机断层扫描的方法和装置
公开(公告)号：US08031828B1
公开(公告)日：2011-10-04
申请号：US12771875
申请日：2010-04-30
申请人： Bruno Kristiaan Bernard DeMan , Jiang Hsieh , Jed Douglas Pack , Kai Zeng
发明人： Bruno Kristiaan Bernard DeMan , Jiang Hsieh , Jed Douglas Pack , Kai Zeng
IPC分类号： A61B6/00
CPC分类号： G06T11/005 , A61B6/027 , G06F19/00 , G06T2211/432
摘要： In one embodiment, a first set of projection data is acquired using a first portion of a detector and a second set of projection data is acquired using a second portion of the detector. The second set of projection data is supplemented based upon the first set of projection data to generate a supplemented set of projection data. A volumetric image may be generated using the supplemented set of projection data.
摘要翻译：在一个实施例中，使用检测器的第一部分获取第一组投影数据，并且使用检测器的第二部分获取第二组投影数据。基于第一组投影数据补充第二组投影数据，以生成补充的一组投影数据。可以使用补充的投影数据集生成体积图像。

14. 发明授权

US08615121B2 Reconstruction of projection data to generate tomographic images having improved frequency characteristics 有权
标题翻译：重建投影数据以产生具有改进的频率特性的断层图像
公开(公告)号：US08615121B2
公开(公告)日：2013-12-24
申请号：US13149734
申请日：2011-05-31
申请人： Jed Douglas Pack , Kai Zeng , Zhye Yin
发明人： Jed Douglas Pack , Kai Zeng , Zhye Yin
IPC分类号： G06K9/00
CPC分类号： G06T11/006 , G06T2211/436
摘要： Algorithms are disclosed that recombine acquired data so as to generate a substantially uniform and complete set of frequency data where frequency data might otherwise be incomplete. This process, or its equivalent, may be accomplished in a computationally efficient manner using filtering steps in one or both of the reconstruction space and/or the post-processing space.
摘要翻译：公开了算法，其重组所获取的数据，以便产生基本均匀且完整的频率数据集合，其中频率数据可能不完整。该过程或其等同物可以以计算有效的方式使用在重建空间和/或后处理空间中的一个或两者中的过滤步骤来完成。

15. 发明申请

US20100158194A1 SYSTEM AND METHOD FOR IMAGE RECONSTRUCTION 有权
标题翻译：用于图像重构的系统和方法
公开(公告)号：US20100158194A1
公开(公告)日：2010-06-24
申请号：US12340787
申请日：2008-12-22
申请人： Jed Douglas Pack , Kai Zeng , Zhye Yin
发明人： Jed Douglas Pack , Kai Zeng , Zhye Yin
IPC分类号： H05G1/64 , G06K9/00
CPC分类号： A61B6/032 , A61B6/027 , G06T11/006
摘要： A method of performing a computed tomographic image reconstruction is provided. The method provides for performing a short scan of an imaging object to acquire a short scan data, performing a plurality of image reconstructions based on the short scan data wherein the plurality of image reconstructions result in a corresponding plurality of image volumes wherein the image reconstructions use different view weighting functions, filtering the plurality of image volumes such that when the volumes are added together, the frequency domain data is substantially uniformly weighted. Further, the method provides for combining the plurality of image volumes together to produce a final image volume.
摘要翻译：提供了一种执行计算机断层图像重建的方法。该方法提供对成像对象进行短扫描以获取短扫描数据，基于短扫描数据执行多个图像重建，其中多个图像重建产生相应的多个图像体积，其中图像重建使用不同的视图加权函数，对多个图像卷进行过滤，使得当体积相加在一起时，频域数据基本上均匀加权。此外，该方法提供将多个图像体积组合在一起以产生最终图像体积。

16. 发明授权

US10165281B2 Method and system for objective perceptual video quality assessment 有权
公开(公告)号：US10165281B2
公开(公告)日：2018-12-25
申请号：US14916927
申请日：2014-09-05
申请人： Zhou Wang , Abdul Rehman , Kai Zeng
发明人： Zhou Wang , Abdul Rehman , Kai Zeng
IPC分类号： H04N7/12 , H04N19/154 , H04N19/53 , G06K9/03 , G06T7/00 , H04N17/00
摘要： There is disclosed a method and system for objective video quality assessment. The objective video quality assessment approach automatically predicts human visual quality assessment behaviors in evaluating videos that contain artifacts generated during video acquisition, storage, reproduction, compression, transmission, processing, and/or display. The present method and system computes a five-dimensional quality map of a video being assessed, where the map indicates the local quality variations of the video in a five-dimensional space, which includes two spatial dimensions, one scale dimension, one time dimension, and one distortion type dimension. The present method and system may use one or a combination of device and viewing condition parameters in the generation of the quality map, and in the combination of the quality map into a scalar or vector-values measure that indicates quality aspects of the test videos.

17. 发明申请

US20140016847A1 MULTI-PHASE COMPUTED TOMOGRAPHY IMAGE RECONSTRUCTION 审中-公开
标题翻译：多相计算机图像重构
公开(公告)号：US20140016847A1
公开(公告)日：2014-01-16
申请号：US13549138
申请日：2012-07-13
申请人： Brian Edward Nett , Jed Douglas Pack , Kai Zeng
发明人： Brian Edward Nett , Jed Douglas Pack , Kai Zeng
IPC分类号： G06K9/00
CPC分类号： G06T11/008 , G06T2211/412
摘要： Approaches for reconstructing multi-phase images are disclosed. In certain embodiments, calibrated X-ray projection data acquired over at least a partial axial or low-pitch helical rotation is accessed and used to reconstruct one or more initial images. A frequency transform is performed on the images to generate respective frequency domain representations. Elements of the frequency domain representations are weighted based on at least the difference between the phase associated with the elements and a specified phase of interest. The weighted frequency domain representations are combined to generate a frequency domain representation at the phase of interest, which can be used to generate an image at the phase of interest.
摘要翻译：公开了重建多相图像的方法。在某些实施例中，通过至少部分轴向或低间距螺旋旋转采集的经校准的X射线投影数据被访问并用于重建一个或多个初始图像。对图像执行频率变换以产生相应的频域表示。至少基于与元素相关的相位与感兴趣的特定阶段之间的差异对频域表示的元素进行加权。加权频域表示被组合以在感兴趣的阶段生成频域表示，其可以用于在感兴趣的阶段生成图像。

18. 发明申请

US20120308101A1 METHOD AND SYSTEM FOR RECONSTRUCTION OF TOMOGRAPHIC IMAGES 有权
标题翻译：重建图像图像的方法和系统
公开(公告)号：US20120308101A1
公开(公告)日：2012-12-06
申请号：US13149732
申请日：2011-05-31
申请人： Kai Zeng , Jed Douglas Pack , Bruno Kristiaan Bernard DeMan , Zhye Yin , Kyle Morgan Champley
发明人： Kai Zeng , Jed Douglas Pack , Bruno Kristiaan Bernard DeMan , Zhye Yin , Kyle Morgan Champley
IPC分类号： G06K9/00
CPC分类号： G06T11/008 , G06T2211/432
摘要： Approaches are described for generating an initial reconstruction of CT data acquired using a wide-cone system. The initial reconstruction may be processed (such as via a non-linear operation) to correct frequency omissions and/or errors in the reconstruction. Corrected frequency information may then be added to the reconstruction to improve the reconstructed image.
摘要翻译：描述了用于生成使用广锥系统获取的CT数据的初始重建的方法。可以处理初始重建（诸如经由非线性操作）以校正重建中的频率遗漏和/或错误。然后可以将校正的频率信息添加到重建中以改善重建的图像。

19. 发明授权

US08284892B2 System and method for image reconstruction 有权
标题翻译：图像重建系统和方法
公开(公告)号：US08284892B2
公开(公告)日：2012-10-09
申请号：US12340787
申请日：2008-12-22
申请人： Jed Douglas Pack , Kai Zeng , Zhye Yin
发明人： Jed Douglas Pack , Kai Zeng , Zhye Yin
IPC分类号： A61B6/03
CPC分类号： A61B6/032 , A61B6/027 , G06T11/006
摘要： A method of performing a computed tomographic image reconstruction is provided. The method provides for performing a short scan of an imaging object to acquire a short scan data, performing a plurality of image reconstructions based on the short scan data wherein the plurality of image reconstructions result in a corresponding plurality of image volumes wherein the image reconstructions use different view weighting functions, filtering the plurality of image volumes such that when the volumes are added together, the frequency domain data is substantially uniformly weighted. Further, the method provides for combining the plurality of image volumes together to produce a final image volume.
摘要翻译：提供了一种执行计算机断层图像重建的方法。该方法提供对成像对象进行短扫描以获取短扫描数据，基于短扫描数据执行多个图像重建，其中多个图像重建产生相应的多个图像体积，其中图像重建使用不同的视图加权函数，对多个图像卷进行过滤，使得当体积相加在一起时，频域数据基本上均匀加权。此外，该方法提供将多个图像体积组合在一起以产生最终图像体积。

20. 发明授权

US08805037B2 Method and system for reconstruction of tomographic images 有权
标题翻译：断层图像重建方法及系统
公开(公告)号：US08805037B2
公开(公告)日：2014-08-12
申请号：US13149702
申请日：2011-05-31
申请人： Jed Douglas Pack , Bruno Kristiaan Bernard DeMan , Paulo Ricardo dos Santos Mendonca , Kai Zeng
发明人： Jed Douglas Pack , Bruno Kristiaan Bernard DeMan , Paulo Ricardo dos Santos Mendonca , Kai Zeng
IPC分类号： G06K9/00
CPC分类号： G06T11/006 , G06T2211/421 , G06T2211/436
摘要： Approaches are described for generating an initial reconstruction of CT data acquired using a wide-cone system. In one implementation, frequency data may be patched in to a first scan, such as an axial scan, from a second scan, such as a helical scan. In one embodiment, an initial reconstruction may be processed (such as via a non-linear operation) to correct frequency omissions and/or errors in the reconstruction. Corrected frequency information may be utilized to improve the reconstructed image.
摘要翻译：描述了用于生成使用广锥系统获取的CT数据的初始重建的方法。在一个实施方式中，可以将频率数据从第二扫描（例如螺旋扫描）修补到第一扫描，例如轴向扫描。在一个实施例中，可以处理初始重建（诸如经由非线性操作）以校正重建中的频率遗漏和/或错误。可以利用校正的频率信息来改善重建图像。

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