公开(公告)号：US5629971A

公开(公告)日：1997-05-13

申请号：US439111

申请日：1995-05-11

Applicant: Steven M. Jones ,  Michael J. Janicki ,  Thomas F. Lang ,  John R. Liebig ,  Xiaohan Wang

Inventor： Steven M. Jones ,  Michael J. Janicki ,  Thomas F. Lang ,  John R. Liebig ,  Xiaohan Wang

IPC: G01T1/164 ,  G21K5/10

CPC classification number: G01T1/1615 ,  A61B6/037 ,  G01T1/1611 ,  G01T1/1642

Abstract: A scan speed procedure and method wherein a minimum radiation exposure period is determined on an object by object basis for a transmission study. Two transmission scans are performed including a prescan followed by a second transmission scan phase. The first transmission prescan is performed using a radiation source over the object. This prescan is of a rapid and predetermined duration (Tp). A resultant count density associated with the object is then generated and examined. The portion having the smallest count density (Cm) is determined and a value (Co) representing the minimum required number of counts for transmission study is given. From the above, a transmission period (Ts) is determined by the system and the second transmission scan phase is performed for the duration Ts using a multi-pass scan phase. The computed duration Ts represents the minimum exposure duration required to collect transmission data to ensure that the count density distribution associated with the object will contain at least Cm count density over each portion of the object.

Abstract translation: 一种扫描速度程序和方法，其中针对传输研究，逐对象地确定最小辐射暴露周期。 执行两次传输扫描，包括预扫描，随后是第二传输扫描阶段。 使用物体上的辐射源执行第一传输预扫描。 该预扫描具有快速和预定的持续时间（Tp）。 然后生成并检查与对象相关联的合成计数密度。 确定具有最小计数密度（Cm）的部分，并且给出表示用于传输研究的最小所需计数数量的值（Co）。 从上述可以看出，系统确定了传输周期（Ts），并且使用多遍扫描阶段对持续时间Ts执行第二传输扫描阶段。 所计算的持续时间Ts表示收集传输数据所需的最小曝光持续时间，以确保与对象相关联的计数密度分布在对象的每个部分上至少包含Cm计数密度。

公开(公告)号：US5598003A

公开(公告)日：1997-01-28

申请号：US438834

申请日：1995-05-11

Applicant: Steven M. Jones ,  Michael J. Janicki ,  Thomas F. Lang ,  J. Keenan Brown ,  John R. Liebig ,  Xiaohan Wang

Inventor： Steven M. Jones ,  Michael J. Janicki ,  Thomas F. Lang ,  J. Keenan Brown ,  John R. Liebig ,  Xiaohan Wang

IPC: G01T1/164 ,  G01T1/161

CPC classification number: G01T1/1648 ,  A61B6/037 ,  G01T1/1642

Abstract: A method and apparatus for collecting transmission information utilizing a large field of view of a detector and for collecting emission data using a small field of view window of the same detector. The system employs the large field of view of a scintillation detector in order to collect transmission data for the entire body being scanned. Such a technique improves the quantitative capability of emission data by acquiring non-truncated attenuation factors. The emission data of a small field of view window is collected so that high resolution image pixels are used for processing the emission data (e.g., of a particular body organ). Since a large field of view is used for collecting the transmission data, the imaging pixels for transmission data are of lower resolution than the emission data. The emission data can be collected using a roving zoom technique during an ECT scan. A computation adjusts the transmission data to account for the known location of the emission zoom window on the crystal and for the different pixel sizes between the full field of view transmission scan of the body and the smaller roving electronic field of view emission scan of the body organ.

Abstract translation: 一种用于利用检测器的大视野来收集传输信息并且使用相同检测器的小视野窗收集发射数据的方法和装置。 该系统采用闪烁检测器的大视野，以便收集被扫描的整个身体的传输数据。 这种技术通过获取非截断衰减因子来提高发射数据的定量能力。 收集小视场窗口的发射数据，使得高分辨率图像像素用于处理发射数据（例如，特定身体器官）。 由于使用大的视野来收集传输数据，所以用于传输数据的成像像素的分辨率低于发射数据。 在ECT扫描期间，可以使用粗纱放大技术收集排放数据。 计算调整传输数据以考虑在晶体上的发射变焦窗口的已知位置以及身体的全视野透射扫描与身体的较小的粗纱电子视野发射扫描之间的不同像素尺寸 器官。

公开(公告)号：US5315506A

公开(公告)日：1994-05-24

申请号：US812589

申请日：1991-12-20

Applicant: Xiaohan Wang ,  Kenneth F. Koral ,  Neal H. Clinthorne ,  W. Leslie Rogers ,  Jeffrey M. Slosar

Inventor： Xiaohan Wang ,  Kenneth F. Koral ,  Neal H. Clinthorne ,  W. Leslie Rogers ,  Jeffrey M. Slosar

IPC: G01T1/164 ,  G06T11/00 ,  G06F15/42

CPC classification number: G01T1/1647 ,  G06T11/005 ,  Y10S378/901

Abstract: A method of reducing the effects of Compton scattered photons detected in a gamma ray detection arrangement includes the steps of receiving data responsive to energy states of the detected photons and storing the data in memory locations corresponding to predetermined image grid points, grouping the stored data, whereby a coarser grid having fewer image grid points is produced, calibrating the gamma ray detection arrangement by utilizing a spectral shape corresponding to a calibration function which is expected to correspond to a first data set corresponding to unscattered ones of the detected photons, processing the stored data for at least selected ones of the predetermined grid points employing minimization of a function which includes a product of an energy regularization term times an energy regularization parameter, as well as a spatial regularization term times a spatial regularization parameter, for separating the stored data into the first data set corresponding to unscattered ones of the detected photons and a second data set corresponding to scattered ones of the detected photons, summing the first data set for each of the predetermined grid points on the coarser grid for determining a number of the unscattered ones of the detected photons, interpolating from the first data set for each of the predetermined grid points on the coarser grid for producing a data set corresponding to the unscattered ones of the detected photons for each of the predetermined number of grid points; and forming an image utilizing the number of the unscattered ones of the detected photons.

Abstract translation: 减少在伽马射线检测装置中检测到的康普顿散射光子的影响的方法包括以下步骤：响应于检测到的光子的能量状态接收数据，并将数据存储在对应于预定图像网格点的存储器位置中，对存储的数据进行分组， 产生具有较少图像网格点的较粗网格，通过利用对应于校准功能的光谱形状来校准伽马射线检测装置，该校准功能预期对应于对应于所检测到的光子中未散射的光子的第一数据集， 用于将包括能量正则化项乘以能量正则化参数的乘积以及空间正则化项乘以空间正则化参数的函数的最小化的至少一个预定网格点的数据用于将存储的数据分离成 第一个数据集对应于未分散的 检测到的光子中的一个和对应于被检测的光子中的散射的光子的第二数据集，对粗糙网格上的每个预定网格点的第一数据集进行求和，以确定检测到的光子的未散射的光子的数量，从 用于产生与预定数量的网格点中的每一个的检测到的光子中未散射的光子对应的数据集的第一数据集; 以及利用检测到的光子中未散射的光子的数量形成图像。

公开(公告)号：US09554174B2

公开(公告)日：2017-01-24

申请号：US14880244

申请日：2015-10-11

Applicant: Janos Redei ,  Xiaohan Wang

Inventor： Janos Redei ,  Xiaohan Wang

IPC: H04N7/173 ,  H04N21/2743 ,  H04N21/222 ,  H04N21/258

CPC classification number: H04N21/2743 ,  H04N7/17318 ,  H04N21/2223 ,  H04N21/25866 ,  H04N21/25891

Abstract: A technique for post-processing media content on a network by a GPU cloud computing system is provided. The system includes a plurality of computer systems providing a content submission connection for uploading the media content. The system includes a processor configured to receive descriptive information related to the media content via the network, receive the media content via the content submission connection which has a quicker uploading bandwidth than the network, process the media content; and distribute processed media content via the network that is separated from the content submission connection. The system further includes a distributed GPU cloud computing platform to perform parallel post-processing of the media content, and an immersive 3D interface.

Abstract translation: 提供了一种由GPU云计算系统对网络上的媒体内容进行后处理的技术。 该系统包括提供用于上载媒体内容的内容提交连接的多个计算机系统。 该系统包括经由网络接收与媒体内容相关的描述信息的处理器，经由内容提交连接接收媒体内容，该内容提交连接具有比网络更快的上传带宽，处理媒体内容; 并通过与内容提交连接分离的网络来分发经处理的媒体内容。 该系统还包括分布式GPU云计算平台，用于执行媒体内容的并行后处理，以及沉浸式3D界面。

公开(公告)号：US09191625B2

公开(公告)日：2015-11-17

申请号：US12567739

申请日：2009-09-26

Applicant: Janos Redei ,  Xiaohan Wang

Inventor： Janos Redei ,  Xiaohan Wang

IPC: H04N7/18 ,  H04N7/173 ,  H04N21/222 ,  H04N21/258 ,  H04N21/2743

CPC classification number: H04N21/2743 ,  H04N7/17318 ,  H04N21/2223 ,  H04N21/25866 ,  H04N21/25891

Abstract: A technique for distributing high-quality, user-generated high definition (HD) video content on the web is presented. A system according to the technique may include a service provider including a user database, a catalog database, and a media library. The service provider may receive the HD video content from a user through a content submission method. A method according to the technique receives registration information for the HD video content to be shared and receives the HD video content from a user through a content submission method. The HD video content may then be further processed, such as transcoding to a streamable format using a massively parallel cloud computing platform.

Abstract translation: 介绍了一种在网络上分发高质量，用户生成的高清（HD）视频内容的技术。 根据技术的系统可以包括包括用户数据库，目录数据库和媒体库的服务提供者。 服务提供商可以通过内容提交方法从用户接收高清视频内容。 根据该技术的方法接收要共享的高清视频内容的注册信息，并通过内容提交方法从用户接收高清视频内容。 然后可以进一步处理HD视频内容，例如使用大规模并行的云计算平台转码为可流式格式。

公开(公告)号：US20150027656A1

公开(公告)日：2015-01-29

申请号：US14384981

申请日：2012-03-13

Applicant: Fuping Tang ,  Zhen Li ,  Xiaofeng Wang ,  Peng Fei ,  Jinsong Meng ,  Yue Zhang ,  Yong Ma ,  Wenzhong Wang ,  Zhiwen Zhang ,  Xiaohan Wang ,  Meng Guo ,  Zhigang Zhao ,  Yang Lin ,  Guoqiang Xin ,  Weizhi Yao

Inventor： Fuping Tang ,  Zhen Li ,  Xiaofeng Wang ,  Peng Fei ,  Jinsong Meng ,  Yue Zhang ,  Yong Ma ,  Wenzhong Wang ,  Zhiwen Zhang ,  Xiaohan Wang ,  Meng Guo ,  Zhigang Zhao ,  Yang Lin ,  Guoqiang Xin ,  Weizhi Yao

IPC: C21C7/064 ,  B22D11/00

CPC classification number: C21C7/064 ,  B22D11/001 ,  C21C1/025 ,  C21C5/35 ,  C21C5/36 ,  C21C7/0043 ,  C21C7/0068 ,  C21C7/0087 ,  C21C7/0645 ,  C21C7/072 ,  C21C7/10 ,  C21C2300/08

Abstract: A method for preparing low-cost clean steel includes steps of: preliminarily desulfurizing iron melt: preliminarily desulfurizing in an iron melt channel during blast furnace tapping and during iron folding in an iron folding room, adding a desulfurizing ball into the iron melt during the blast furnace tapping or the iron folding; dephosphorizing and controlling sulfur: dephosphorizing and controlling sulfur during converter steelmaking, in such a manner that P≦0.014% and S≦0.004% during tapping; rapidly dephosphorizing by slag-forming: rapidly dephosphorizing by slag-forming during converter tapping, at a converter end point, controlling a C content at 0.02˜0.10%, adding a dephosphorizing ball through an alloy chute during the converter tapping, blowing argon and stirring at the same time; purifying steel melt during RH refining: adding a purifying ball at a late stage of the RH refining when a vacuum degree is at 66.7˜500 Pa; and continuously casting with whole-process protection.

Abstract translation: 制备低成本清洁钢的方法包括以下步骤：预先将铁熔体脱硫：在高炉出钢期间和铁折叠期间在铁熔体通道中预先脱硫，在铁折叠室中铁折叠期间，在爆炸期间向铁熔体中加入脱硫球 炉膛或熨斗折叠; 脱磷控制硫：在转炉炼钢过程中脱磷和控制硫，使得出钢时P＆lt; 0.014％和S＆NlE; 0.004％; 通过成渣快速脱磷：在转炉攻丝期间通过炉渣形成快速脱磷，在转炉终点，控制C含量为0.02〜0.10％，在转炉出料过程中加入脱磷球通过合金槽，吹氩并搅拌 与此同时; 在RH精炼期间净化钢熔体：当真空度为66.7〜500Pa时，在RH精炼的后期添加净化球; 并持续铸造全过程保护。

公开(公告)号：US20100118308A1

公开(公告)日：2010-05-13

申请号：US12436113

申请日：2009-05-05

Applicant: Tongxin Lu ,  Xiaohan Wang

Inventor： Tongxin Lu ,  Xiaohan Wang

IPC: G01N21/55

CPC classification number: G01B11/0625 ,  G01J3/02 ,  G01J3/0208 ,  G01J3/0216 ,  G01N21/9501 ,  G01N2021/8427 ,  G01N2201/0637

Abstract: The present invention is an optical system, comprising: a light source for providing light rays; a combined two or more parabolic reflectors or elliptical reflectors having inner reflecting surfaces, wherein the reflectors sharing a common focal point, and a device-under-test is disposed thereabout the focal point; wherein the collimated light rays coming into the parabolic reflector parallel to the axis of symmetry of each parabolic reflector would be directed to the focal point on the surface of the device-under-test. The reflected light rays from the device-under-test are directed by the other parabolic reflectors along the axes of symmetry of each parabolic reflector and generate information indicative of the device-under-test; wherein the reflected light rays exit the reflector; and a detector for receiving the exited light rays.

Abstract translation: 本发明是一种光学系统，包括：用于提供光线的光源; 具有内部反射表面的组合的两个或更多个抛物线反射器或椭圆形反射器，其中共享公共焦点的反射器和被测设备被布置在焦点附近; 其中进入抛物面反射器的平行于每个抛物面反射器的对称轴的准直光线将被引导到被测器件的表面上的焦点。 来自被测器件的反射光线被其他抛物面反射器沿着每个抛物面反射器的对称轴引导，并产生指示被测器件的信息; 其中所述反射光线离开所述反射器; 以及用于接收退出的光线的检测器。

公开(公告)号：US5739539A

公开(公告)日：1998-04-14

申请号：US625533

申请日：1996-03-27

Applicant: Xiaohan Wang ,  J. Keenan Brown ,  Steven M. Jones ,  John R. Liebig

Inventor： Xiaohan Wang ,  J. Keenan Brown ,  Steven M. Jones ,  John R. Liebig

IPC: G01T1/164 ,  G01T1/166 ,  G01T1/29

CPC classification number: G06T11/003 ,  A61B6/4258 ,  G01T1/1611 ,  G01T1/1615 ,  G01T1/1642 ,  G01T1/1648 ,  G01T1/166 ,  G01T1/2985

Abstract: A method of performing image reconstruction in a gamma camera system comprises the steps of performing a transmission scan of an object about a number of rotation angles to collect transmission projection data and performing an emission scan of the object about numerous rotation angles to collect emission projection data. The outer boundary of the object is then located based on the transmission projection data. Information identifying the boundary is then either stored in a separate body contour map or embedded in an attenuation map. The information identifying the boundary can be in the form of flags indicating whether individual pixels are inside or outside the boundary of the object. The emission projection data is then reconstructed, using the attenuation map if desired, to generate transverse slice images. By using the body boundary information, portions of the emission projection data representing points outside the boundary of the object are not reconstructed in order to reduce total reconstruction time.

Abstract translation: 在伽马照相机系统中执行图像重建的方法包括以下步骤：对多个旋转角度进行物体的发射扫描，以收集透射投影数据，并执行关于多个旋转角度的物体的发射扫描以收集发射投影数据 。 然后基于传输投影数据来定位对象的外边界。 然后将识别边界的信息存储在单独的身体轮廓图中或嵌入衰减图中。 识别边界的信息可以是指示个体像素是否在对象的边界内部或外部的标志的形式。 然后如果需要，使用衰减图重建发射投影数据，以产生横切片图像。 通过使用身体边界信息，不重建表示物体边界外的点的发射投影数据的部分，以减少总重构时间。

公开(公告)号：US5596197A

公开(公告)日：1997-01-21

申请号：US439222

申请日：1995-05-11

Applicant: Steven M. Jones ,  Thomas F. Lang ,  John R. Liebig ,  Xiaohan Wang

Inventor： Steven M. Jones ,  Thomas F. Lang ,  John R. Liebig ,  Xiaohan Wang

IPC: G01T1/164 ,  G01T1/161

CPC classification number: G01T1/1615 ,  A61B6/037 ,  G01T1/1611 ,  G01T1/1642 ,  G01T1/1648

Abstract: A mechanism and method for performing transmission and emission scanning sessions with two line sources and two detectors wherein two sliding transmission detection windows are employed to differentiate between transmission and emission photons. Transmission and emission data can be collected simultaneously. This system provides that the dual transmission detection windows are each associated with a particular line source and move in synchronization with the associated line source. Further, the two line sources and the two detector windows all move in synchronization in the direction of the long axis of the object being scanned and at any given position all are within a given spatial plane that is transverse to the long axis of the object. In this configuration, the system can effectively reduce the amount of cross-talk detected by a detector (e.g., cross-talk being scattered photon radiation detected by a given detector but not originating from the detector's associated line source). The configuration of this system also effectively operates in conjunction with systems employing tracking zoom regions across detector surfaces (e.g., used for cardiac studies).

Abstract translation: 用于利用两个线路源和两个检测器执行发射和发射扫描会话的机构和方法，其中采用两个滑动传输检测窗口来区分传输和发射光子。 传输和排放数据可以同时收集。 该系统提供双传输检测窗口各自与特定的线路源相关联并且与相关联的线路源同步地移动。 此外，两条线源和两个检测器窗口都沿被扫描物体的长轴方向同步移动，并且在任何给定位置都在与物体的长轴横切的给定空间平面内。 在该配置中，系统可以有效地减少由检测器检测到的串扰量（例如，串扰是由给定检测器检测到但不是源于检测器的相关线路源的散射光子辐射）。 该系统的配置还与跨越检测器表面的跟踪缩放区域（例如，用于心脏研究）的系统结合有效地操作。