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    • 6. 发明申请
    • List Mode-Based Respiratory and Cardiac Gating in Positron Emission Tomography
    • 基于模式的呼吸和心脏门控正电子发射断层扫描
    • US20100067765A1
    • 2010-03-18
    • US12559721
    • 2009-09-15
    • Florian ButherKlaus SchafersWilliam F. JonesBernard BendriemHartwig Newiger
    • Florian ButherKlaus SchafersWilliam F. JonesBernard BendriemHartwig Newiger
    • G06K9/00
    • A61B6/032A61B6/037A61B6/5217A61B6/541
    • According to a preferred embodiment, the invention provides a method for extracting internal organ motion from positron emission tomography (PET) coincidence data, the method comprising the following steps: generating a data stream of PET coincidence data using the list mode capability of a PET scanner; dividing the data stream into time frames of a given length; computing a histogram A(i, t) of an axial coincidence distribution for a set of time frames; computing the axial center of mass z(t) for each of the time frames in the set of time frames based on the histogram A(i, t); transforming z(t) into the frequency domain; determining either the frequency contribution caused by respiratory motion, given by fresp, or the frequency contribution caused by heart contractions, given by fcard and Δf, identified in the frequency spectrum |Z(f)|; and carrying out further processing of Z(f) leading to curves zresp(t) and zcard(t) with which a gating sequence is established.
    • 根据优选实施例,本发明提供一种从正电子发射断层摄影(PET)符合数据提取内部器官运动的方法,该方法包括以下步骤:使用PET扫描仪的列表模式能力产生PET符合数据的数据流 ; 将数据流划分成给定长度的时间帧; 计算一组时间轴的轴向一致分布的直方图A(i,t); 基于直方图A(i,t)计算时间帧集合中的每个时间帧的轴向质心z(t); 将z(t)转换为频域; 确定由fresp给出的呼吸运动引起的频率贡献或由频谱| Z(f)|中确定的fcard和&Dgr; f给出的由心脏收缩引起的频率贡献; 并进行Z(f)的进一步处理,导致建立门控序列的曲线zresp(t)和zcard(t)。
    • 7. 发明授权
    • Device for on-line data acquisition in three-dimensional positron emission tomography
    • 三维正电子发射断层扫描在线数据采集装置
    • US07676070B2
    • 2010-03-09
    • US11130631
    • 2005-05-16
    • William F. JonesJohnny Reed
    • William F. JonesJohnny Reed
    • G06K9/00
    • G01T1/2985A61B6/037G06T1/20
    • A device for improved on-line histogramming of data acquired in a Positron Emission Tomography (PET) scan. The device is a Smart DRAM (SD) PCI card, of which more than one can be used in combination within a PC-based architecture for on-line histogramming. The SD PCI card is applied as either of a Gating Buffer, a histogramming card, and a normalization buffer. The Gating Buffer card alternately stores an arriving PET data packet stream into two dedicated DRAM banks. The two DRAM banks store and retransmit the packet stream in the order of arrival for an entire physiological cycle. The histogramming SD RMW PCI cards provide a very high rate of histogramming. The extendible daisy-chain of SD RMW PCI cards supports large memory banks across potentially hundreds of SD RMW PCI cards. Under a single PC, a multiple PCI Expansion chassis is employed such that a large number of PCI cards are supported.
    • 用于改进在正电子发射断层扫描(PET)扫描中获取的数据的在线直方图的装置。 该设备是智能DRAM(SD)PCI卡,其中多个可以在基于PC的架构中组合使用,用于在线直方图。 SD PCI卡被应用为门控缓冲器,直方图卡和归一化缓冲器中的任何一个。 门控缓冲卡交替地将到达的PET数据分组流存储到两个专用DRAM组中。 两个DRAM银行以整个生理周期的顺序存储和重新发送分组流。 直方图SD RMW PCI卡提供非常高的直方图率。 SD RMW PCI卡的可扩展菊花链支持可能存在数百个SD RMW PCI卡的大型存储库。 在单个PC下,使用多个PCI扩展机箱,以支持大量的PCI卡。
    • 8. 发明授权
    • On-line DOI rebinning for LSO PET/SPECT spatial resolution
    • 在线DOI重组LSO PET / SPECT空间分辨率
    • US06852980B2
    • 2005-02-08
    • US09982344
    • 2001-10-18
    • William F. JonesBernard BendriemMichael E. Casey
    • William F. JonesBernard BendriemMichael E. Casey
    • G01T1/164G01T1/20G01T1/29
    • G01T1/2985A61B6/037A61B6/5205
    • 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.
    • 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。
    • 10. 发明授权
    • Apparatus and methods for weighing railroad cars coupled together and in
motion
    • 将铁路车辆称重的装置和方法联接在一起并运动
    • US4258809A
    • 1981-03-31
    • US493218
    • 1974-07-31
    • William F. Jones
    • William F. Jones
    • G01G19/04G01G9/00G01G19/40G01G21/22
    • G01G19/047
    • An apparatus and method for weighing railroad cars coupled together and in motion is disclosed which eliminates the necessity for special scales and, in particular, can be retrofitted and used in conjunction with most existing weigh bridges regardless of the length of the weight bridge, without any modification of the physical construction thereof, and with most existing weigh mechanisms.Generally, the apparatus provides two types of weighing, summation of axle weights and full draft. In addition, combinations of each are possible. During weighing by the summation of axle weights, as each axle enters the weigh bridge, a weight measurement is made and stored in memory. Cars with up to a maximum of nine axles (this is limited by the requirement rather than the electronics) are weighed by adding the axle weights, when the last car axle has entered the weigh bridge. A printer provides a hard copy record of car weights. Full draft weights can be provided, on weigh bridges longer than cars, to provide a more accurate individual car weight. Each axle on the weigh bridge has its equivalent weight stored in memory and during a full draft weight cycle, all axles other than those of the car in full draft are subtracted from the current weight. The final weight is passed to the printer to provide a hard copy record. The axle sum or full draft weight cycles are automatically carried out by signals generated from the track switch logic. The computing unit accepts trains containing cars which may be weighed on axle sum or full draft, depending on the car axle spacing and the weigh bridge length.
    • 公开了一种用于称重联接在一起并在运动中的铁路车辆的装置和方法,其消除了特殊秤的必要性,并且特别是可以与大多数现有的称重桥结合使用,而不考虑重量桥的长度,而没有任何 修改其物理结构,以及大多数现有的称重机制。 通常,该装置提供两种类型的称重,轴重加总和全吃水。 另外,每种组合都是可能的。 在通过轴重加权称重期间,当每个轴进入称重桥时,进行重量测量并存储在存储器中。 当最后一个车轴进入称重桥时,通过加上车轴重量,称重最多可达九个车轴的车辆(由要求限制,而不是电子部件)。 打印机提供汽车重量的硬拷贝记录。 在比桥重的桥梁上可以提供全配重,以提供更精确的单车重量。 称重桥上的每个轴的等效重量存储在记忆体中,并且在整个吃水重量循环期间,除了当前重量之外的所有车辆以外的所有车轴都从全吃水中减去。 最后的重量传递给打印机以提供硬拷贝记录。 通过从轨道开关逻辑产生的信号自动执行车轮总和或全牵伸重量循环。 计算单元接收列车,该列车可以根据车轴间距和称重桥长度,根据车桥总数或全速度进行称重。