公开(公告)号：US20100061263A1

公开(公告)日：2010-03-11

申请号：US12558055

申请日：2009-09-11

申请人： John E. Breeding ,  Michael E. Casey ,  Jimmy Everman ,  William F. Jones ,  Johhny H. Reed ,  Wing K. Luk

发明人： John E. Breeding ,  Michael E. Casey ,  Jimmy Everman ,  William F. Jones ,  Johhny H. Reed ,  Wing K. Luk

IPC分类号： H04L12/26

CPC分类号： G01T1/00 ,  H04L67/12 ,  H04L69/40

摘要： A system identifies when received packets are lost at a node in a multi-node processing chain. The system processing chain may include a gantry interface module for receiving coincident event data from a PET (Positron Emission Tomography) detector array, a DMA (direct memory access) rebinner card, and a transmission line coupled between the gantry interface module and the DMA card. FPGA and FIFO elements in each processing portion receive packets that may be lost if there is insufficient FIFO capacity. Lost packets are marked, discarded, and counted. At specified intervals, set in accordance with a threshold number of packets received a lost tally data packet is generated that includes count information for lost packets. The lost tally data packet is forwarded downstream when sufficient storage capacity exists.

摘要翻译： 系统识别在多节点处理链中的节点处收到的数据包丢失的情况。 系统处理链可以包括用于从PET（正电子发射断层扫描）检测器阵列，DMA（直接存储器访问）重新接收器卡和耦合在台架接口模块和DMA卡之间的传输线接收重合事件数据的龙门架接口模块 。 每个处理部分的FPGA和FIFO元素接收到如果FIFO容量不足可能会丢失的数据包。 丢失的数据包被标记，丢弃和计数。 按指定间隔设置，根据接收到的丢包数据包的阈值数量，生成包括丢失数据包的计数信息。 当存在足够的存储容量时，丢失的计数数据分组被转发到下游。

公开(公告)号：US07983186B2

公开(公告)日：2011-07-19

申请号：US12558055

申请日：2009-09-11

申请人： John E. Breeding ,  Michael E. Casey ,  Jimmy Everman ,  William F. Jones ,  Wing K. Luk ,  Johnny H. Reed

发明人： John E. Breeding ,  Michael E. Casey ,  Jimmy Everman ,  William F. Jones ,  Wing K. Luk ,  Johnny H. Reed

IPC分类号： H04L12/26

CPC分类号： G01T1/00 ,  H04L67/12 ,  H04L69/40

摘要： A system identifies when received packets are lost at a node in a multi-node processing chain. The system processing chain may include a gantry interface module for receiving coincident event data from a PET (Positron Emission Tomography) detector array, a DMA (direct memory access) rebinner card, and a transmission line coupled between the gantry interface module and the DMA card. FPGA and FIFO elements in each processing portion receive packets that may be lost if there is insufficient FIFO capacity. Lost packets are marked, discarded, and counted. At specified intervals, set in accordance with a threshold number of packets received a lost tally data packet is generated that includes count information for lost packets. The lost tally data packet is forwarded downstream when sufficient storage capacity exists.

摘要翻译： 系统识别在多节点处理链中的节点处收到的数据包丢失的情况。 系统处理链可以包括用于从PET（正电子发射断层扫描）检测器阵列，DMA（直接存储器访问）重新接收器卡和耦合在台架接口模块和DMA卡之间的传输线接收重合事件数据的龙门架接口模块 。 每个处理部分的FPGA和FIFO元素接收到如果FIFO容量不足可能会丢失的数据包。 丢失的数据包被标记，丢弃和计数。 按指定间隔设置，根据接收到的丢包数据包的阈值数量，生成包括丢失数据包的计数信息。 当存在足够的存储容量时，丢失的计数数据分组被转发到下游。

公开(公告)号：US08170855B2

公开(公告)日：2012-05-01

申请号：US12110485

申请日：2008-04-28

申请人： William Jones ,  John E. Breeding ,  Johnny H. Reed ,  Jimmy Everman ,  Michael E. Casey

发明人： William Jones ,  John E. Breeding ,  Johnny H. Reed ,  Jimmy Everman ,  Michael E. Casey

IPC分类号： G06F17/50

CPC分类号： G06F11/261

摘要： A system for simulating a Positron Emission Tomography (PET) gantry has a computer system having a bus system for receiving expansion cards, a mass data storage support system, the mass storage system being operable to store coincidence-event and tag packet data, and a data transfer simulation card for said bus system, wherein the data transfer simulation card is operable to simulate transfer timing of the stored coincidence-event and tag packet data.

摘要翻译： 用于模拟正电子发射断层扫描（PET）龙门架的系统具有计算机系统，其具有用于接收扩展卡的总线系统，大容量数据存储支持系统，大容量存储系统可操作以存储符合事件和标签分组数据，以及 用于所述总线系统的数据传输模拟卡，其中数据传输模拟卡可操作以模拟存储的符合事件和标签分组数据的传送定时。

公开(公告)号：US07638771B2

公开(公告)日：2009-12-29

申请号：US11749434

申请日：2007-05-16

申请人： John E. Breeding ,  Michael E. Casey ,  William F Jones

发明人： John E. Breeding ,  Michael E. Casey ,  William F Jones

IPC分类号： G01T1/166

CPC分类号： G06T11/005

摘要： A system for generating time-of-flight (TOF) positron emission tomography (PET) projection data includes a direct memory access rebinner constructed as a digital FPGA pipeline for rebinning TOF coincidence data in accordance with a number of projection space mapping algorithms, such as single-slice rebinning (SSRB) and reduced multiple-slice rebinning (MSRB), together with less precise transaxial and/or axial sampling.

摘要翻译： 用于产生飞行时间（TOF）正电子发射断层摄影（PET）投影数据的系统包括构造为数字FPGA流水线的直接存储器访问重组器，用于根据多个投影空间映射算法重新组合TOF重合数据，例如 单片重组（SSRB）和减少的多片重组（MSRB），以及较不精确的横轴和/或轴向采样。

公开(公告)号：US06915004B2

公开(公告)日：2005-07-05

申请号：US10086906

申请日：2002-02-28

申请人： Danny F. Newport ,  Michael E. Casey ,  Wing K. Luk ,  Johnny H. Reed

发明人： Danny F. Newport ,  Michael E. Casey ,  Wing K. Luk ,  Johnny H. Reed

IPC分类号： G06T11/00 ,  G06K9/00

CPC分类号： G06T11/005 ,  G06T11/006 ,  G06T2211/428 ,  Y10S128/922

摘要： Apparatus and methods for three dimensional image reconstruction from data acquired in a positron emission tomograph (PET). This invention uses a parallel/pipelined architecture for processing the acquired data as it is acquired from the scanner. The asynchronously acquired data is synchronously stepped through the stages performing histogramming, normalization, transmission/attenuation, Mu image reconstruction, attenuation correction, rebinning, image reconstruction, scatter correction, and image display.

摘要翻译： 在正电子发射断层扫描（PET）中获取的数据进行三维图像重建的装置和方法。 本发明使用并行/流水线架构来处理从扫描器获取的所获取的数据。 通过执行直方图，归一化，发送/衰减，Mu图像重建，衰减校正，重组，图像重建，散射校正和图像显示的阶段，异步采集的数据被同步地步进。

公开(公告)号：US06774358B2

公开(公告)日：2004-08-10

申请号：US10103276

申请日：2002-03-21

申请人： James J. Hamill ,  Michael E. Casey ,  Timothy G. Gremillion ,  Wing K. Luk ,  Stephen Miller

发明人： James J. Hamill ,  Michael E. Casey ,  Timothy G. Gremillion ,  Wing K. Luk ,  Stephen Miller

IPC分类号： G01K500

CPC分类号： G01T1/2985 ,  A61B6/037 ,  G01T1/1644

摘要： Apparatus and methods for simulating a sheet source with a line source for determining normalization coefficients for the detectors in positron emission tomography (PET) scanners and single photon emission computed tomography (SPECT) scanners. A line source, oriented perpendicular to the axis of a scanner gantry, is moved along the axis while the detectors are stationary and positioned substantially parallel to the plane in which the source moves. In another embodiment, an axially mounted line source moves parallel to a diameter of the gantry while the stationary detectors are positioned substantially parallel to the plane in which the source moves. In still another embodiment, the line source is stationary and positioned parallel to the gantry axis and off center while the detectors move relative to the line source. A shaped attenuator is placed around the source in this last embodiment.

摘要翻译： 用于模拟具有用于确定正电子发射断层摄影（PET）扫描仪和单光子发射计算机断层摄影（SPECT）扫描仪中的检测器的归一化系数的线源的片材源的装置和方法。 垂直于扫描仪台架的轴线定向的线源沿轴线移动，同时检测器是固定的并且基本上平行于源移动的平面定位。 在另一个实施例中，轴向安装的线源平行于台架的直径移动，而固定检测器基本上平行于源移动的平面定位。 在另一个实施例中，线源固定并且平行于台架轴定位并且离开中心，同时检测器相对于线源移动。 在最后一个实施例中，围绕源设置成形的衰减器。

公开(公告)号：US20080275688A1

公开(公告)日：2008-11-06

申请号：US12110485

申请日：2008-04-28

申请人： William Jones ,  John E. Breeding ,  Johnny H. Reed ,  Jim Everman ,  Michael E. Casey

发明人： William Jones ,  John E. Breeding ,  Johnny H. Reed ,  Jim Everman ,  Michael E. Casey

IPC分类号： G06G7/62

CPC分类号： G06F11/261

摘要： A system for simulating a Positron Emission Tomography (PET) gantry has a computer system having a bus system for receiving expansion cards, a mass data storage support system, the mass storage system being operable to store coincidence-event and tag packet data, and a data transfer simulation card for said bus system, wherein the data transfer simulation card is operable to simulate transfer timing of the stored coincidence-event and tag packet data.

摘要翻译： 用于模拟正电子发射断层扫描（PET）龙门架的系统具有计算机系统，其具有用于接收扩展卡的总线系统，大容量数据存储支持系统，大容量存储系统可操作以存储符合事件和标签分组数据，以及 用于所述总线系统的数据传输模拟卡，其中数据传输模拟卡可操作以模拟存储的符合事件和标签分组数据的传送定时。

公开(公告)号：US06329657B1

公开(公告)日：2001-12-11

申请号：US09070951

申请日：1998-05-01

申请人： Charles C. Watson ,  Ronald Nutt ,  J. Clifton Moyers ,  Michael E. Casey ,  William F. Jones

发明人： Charles C. Watson ,  Ronald Nutt ,  J. Clifton Moyers ,  Michael E. Casey ,  William F. Jones

IPC分类号： G01T1163

CPC分类号： G01T1/2985 ,  A61B6/037

摘要： A coincidence transmission source serves to detect coincident activity from a radiation source. The coincidence transmission source includes a detector dedicated to collecting attenuation data. A collimated radiation source and a detector are positioned with respect to a tomography device such that only a selected strip of the imaging detector of the tomograph is illuminated such that events unrelated to the attenuation are eliminated. The coincidence transmission source includes a collimator in which is disposed a radiation source. An opening is defined by the collimator for exposing a selected portion of the imaging detectors of the tomograph device. Positioned behind the radiation source, relative to the imaging detectors, is the dedicated attenuation detector. The attenuation detector and collimator are designed to illuminate only a strip of the imaging detector, thereby eliminating events not of interest in the attenuation measurement. In a dual head tomograph device, one coincidence transmission source of the present invention is disposed opposite each bank of imaging detectors. The sources and the associated collimators are positioned to the side of each head at a slight angle relative to the respective head. The sources and detectors are fixed relative to the imaging heads. In order to obtain full coverage of the field of view (FOV) in the same manner as for an emission scan, the heads and sources are rotated about the center of the camera.

摘要翻译： 符合传输源用于检测来自辐射源的重合活动。 重合传输源包括专用于收集衰减数据的检测器。 准直辐射源和检测器相对于断层摄影装置定位，使得只有层析成像仪的成像检测器的选定条带被照亮，从而消除与衰减无关的事件。 重合传输源包括其中设置有辐射源的准直仪。 由准直器限定开口以暴露层析成像装置的成像检测器的选定部分。 相对于成像检测器定位在辐射源之后，是专用的衰减检测器。 衰减检测器和准直器被设计为仅照射成像检测器的条带，从而消除衰减测量中不感兴趣的事件。 在双头断层摄影装置中，本发明的一个重合传播源与每一组成像检测器相对设置。 源和相关联的准直仪相对于相应的头部以相当小的角度定位在每个头部的侧面。 源和检测器相对于成像头是固定的。 为了以与发射扫描相同的方式获得视场（FOV）的全面覆盖，头部和源围绕照相机的中心旋转。

公开(公告)号：US06852980B2

公开(公告)日：2005-02-08

申请号：US09982344

申请日：2001-10-18

申请人： William F. Jones ,  Bernard Bendriem ,  Michael E. Casey

发明人： William F. Jones ,  Bernard Bendriem ,  Michael E. Casey

IPC分类号： G01T1/164 ,  G01T1/20 ,  G01T1/29

CPC分类号： G01T1/2985 ,  A61B6/037 ,  A61B6/5205

摘要： A method and apparatus for on-line DOI rebinning for LSO PET/SPECT to improve spatial resolution, for use in a hybrid Positron Emission Tomography (PET)/Single Photon Emission Computed Tomography (SPECT) system running in PET-mode. Data acquisition hardware is used to feed a detector pair coincidence event stream to an on-line rebinner. Gamma centroid location measurements are made by rastering assumed transaxial and radial head positions and the corresponding rebinning maps for optimal back-projected image resolution. Optimal positions are found by collecting a 64-bit list mode file, assuming a crystal position as the centroid for each of the heads, defining a sequence for varying the assumed positions, making the rebinning look-up tables, rebinning the list mode data, histogramming and reconstructing the image, assessing the image resolution, recording the best resolution number and the associated trial position variables, repeating these on the next trial variable set.

摘要翻译： 用于LSO PET / SPECT的在线DOI重组以提高空间分辨率的方法和装置，用于以PET模式运行的混合正电子发射断层扫描（PET）/单光子发射计算机断层扫描（SPECT）系统。 数据采集​​硬件用于将检测器对重合事件流馈送到在线重组器。 伽马重心位置测量是通过对假设的横轴和径向头部位置以及相应的重新组合图进行掠夺来实现最佳背投影图像分辨率。 通过收集64位列表模式文件，假设晶体位置为每个头的质心，定义用于改变假定位置的序列，使重新排列查找表，重新列出列表模式数据，找到最佳位置， 直方图和重建图像，评估图像分辨率，记录最佳分辨率数字和相关联的试验位置变量，在下一个试验变量集中重复这些变量。

公开(公告)号：US5224037A

公开(公告)日：1993-06-29

申请号：US670291

申请日：1991-03-15

申请人： William F. Jones ,  Michael E. Casey ,  Larry G. Byars

发明人： William F. Jones ,  Michael E. Casey ,  Larry G. Byars

IPC分类号： G06T11/00

CPC分类号： G06T11/006 ,  G06T2211/421 ,  G06T2211/428

摘要： A 3-dimensional projection system (10) for the rapid back projection of multi-ring Positron Emission Tomography (PET) scan data composed of planes (44) of two-dimensional data defining individual Lines Of Response (LOR) (42) into a plurality of image voxels for three-dimensional display on a video screen. The projection system (10) of the preferred embodiment is a Very Large Scale Integration (VLSI) based architecture which will support forward and back projection for a 3-dimensional image detected by a multi-ring PET scanner. A selected number of processing engines (20) are included for forward projection and back projection, the number of engines (20) being inversely proportional to the projection time.

摘要翻译： 一种用于快速反投影多环正射子断层扫描（PET）扫描数据的三维投影系统（10），该扫描数据由定义各个响应线（LOR）（42）的二维数据的平面（44）组成一个 用于在视频屏幕上进行三维显示的多个图像体素。 优选实施例的投影系统（10）是基于超大规模集成（VLSI）的架构，其将支持由多环PET扫描器检测到的三维图像的向前和向后投影。 所选数量的处理引擎（20）被包括用于向前投影和反投影，发动机（20）的数量与投影时间成反比。