Protocol driven image reconstruction, display, and processing in a
multislice imaging system
    1.
    发明授权
    Protocol driven image reconstruction, display, and processing in a multislice imaging system 有权
    多层成像系统中的协议驱动图像重建,显示和处理

    公开(公告)号:US6141398A

    公开(公告)日:2000-10-31

    申请号:US139438

    申请日:1998-08-25

    IPC分类号: A61B6/00 A61B6/03 G06T1/00

    摘要: A scalable multislice system configured to generate multiple streams of image data with different image quality characteristics prospectively and simultaneously is described. Such capability enables improving existing clinical diagnosis and also enables use of clinical application protocol driven method for image reconstruction and display as well as image analysis. More specifically, with the scalable multislice imaging system, multiple rows (>2) of x-ray scan data along the patient's long axis are simultaneously acquired. Multiple protocols are "pre-built" based on specific applications to determine image slice thickness, image reconstruction filter, display method, e.g., field of view, filming requirement and image archiving requirement, prospectively. Multiple image sets with different slice thickness, different reconstruction methods, different display model--axial, 3D or reformat which are pre-determined by the protocol used can then be displayed.

    摘要翻译: 描述了一种可扩展的多层系统,被配置为生成具有前景和同时具有不同图像质量特性的多个图像数据流。 这种能力可以改善现有的临床诊断,并且还能够使用临床应用协议驱动的图像重建和显示以及图像分析方法。 更具体地,利用可扩展的多层成像系统,同时获取沿着患者长轴的多行(> 2)X射线扫描数据。 多个协议是基于具体应用的“预构建”,以前景地确定图像切片厚度,图像重建滤波器,显示方法,例如视场,拍摄要求和图像归档要求。 然后可以显示具有不同切片厚度的多个图像集,不同的重建方法,由所使用的协议预先确定的不同显示模型 - 轴向,3D或重新格式化。

    Image thickness selection for multislice imaging system
    2.
    发明授权
    Image thickness selection for multislice imaging system 失效
    多层成像系统的图像厚度选择

    公开(公告)号:US06404841B1

    公开(公告)日:2002-06-11

    申请号:US09473676

    申请日:1999-12-29

    IPC分类号: A61B600

    摘要: Scalable multislice systems which, in one embodiment, includes a scalable multislice detector, a scalable data acquisition system (SDAS), scalable scan management, control, and image reconstruction processes, and a user interface, are described. More specifically, the user interface is implemented in a host computer for defining the configuration of the imaging system. Particularly, after selection of each scan parameter, the user interface displays the available scan parameter values for the remaining parameters so that the scan objectives are met. More specifically, after selection of each scan parameter, the user interface updates the remaining scan parameters, including prospective and retrospective image thicknesses.

    摘要翻译: 在一个实施例中,可扩展多层系统包括可扩展多层检测器,可伸缩数据采集系统(SDAS),可伸缩扫描管理,控制和图像重建处理以及用户界面。 更具体地,在主计算机中实现用户界面以定义成像系统的配置。 特别地,在选择每个扫描参数之后,用户界面显示剩余参数的可用扫描参数值,以便满足扫描目标。 更具体地,在选择每个扫描参数之后,用户界面更新剩余的扫描参数,包括预期和回顾图像厚度。

    Methods and apparatus for automatic image noise reduction
    3.
    发明授权
    Methods and apparatus for automatic image noise reduction 有权
    自动降噪图像的方法和装置

    公开(公告)号:US06285741B1

    公开(公告)日:2001-09-04

    申请号:US09140105

    申请日:1998-08-25

    IPC分类号: A61B600

    CPC分类号: H05G1/34 A61B6/032

    摘要: The present invention, in one form, is a system which, in one embodiment, adjusts the x-ray source current to reduce image noise to better accommodate different scanning parameters. Specifically, in one embodiment, the x-ray source current is adjusted as a function of image slice thickness, scan rotation time, collimation mode, table speed, scan mode, and filtration mode. Particularly, a function is stored in a CT system computer to determine an x-ray source current adjustment factor so that the appropriate x-ray source current is supplied to the x-ray source for the determined parameters. After adjusting the x-ray source current, an object is scanned.

    摘要翻译: 本发明以一种形式是在一个实施例中调整x射线源电流以减少图像噪声以更好地适应不同扫描参数的系统。 具体地,在一个实施例中,根据图像切片厚度,扫描旋转时间,准直模式,表速度,扫描模式和过滤模式来调整x射线源电流。 特别地,功能被存储在CT系统计算机中以确定x射线源电流调整因子,使得适当的x射线源电流被提供给所确定的参数的x射线源。 调整x射线源电流后,扫描物体。

    Real time data averager for use in computed tomography scanning
    4.
    发明授权
    Real time data averager for use in computed tomography scanning 失效
    实时数据平均计算机用于计算机断层扫描

    公开(公告)号:US5212737A

    公开(公告)日:1993-05-18

    申请号:US767505

    申请日:1991-09-30

    IPC分类号: A61B6/03 G06T11/00

    摘要: A helical CT scanning system includes a real time averager that rapidly processes data from the system's detector array, to enable substantially real time production of X-ray images. The averager, which may be used with an scanning electron beam CT system operating in conventional or helical mode, or with a rotating mechanical gantry CT scanner operated in conventional or helical mode, includes an adder and first and second memory banks and an input FIFO register. The FIFO register synchronously communicates system detector array data to the adder. The adder combines this input data with data previously stored in one of the memory banks. For example, after a first X-ray scan, detector data are written via the FIFO and adder into the first data bank, and after a subsequent scan, the sum of the original data in the first data bank is added to the new data corresponding to the second scan, and the new summation is written into the second data bank. After a third scan, new data corresponding to the third scan is added to the data in the second data bank and the new summation is written into the first data bank, and so on. The data in the most recently acquired data bank is divided by the number of scans per resultant image (N) to provide a running real time or "on the fly" average value of data per scan.

    摘要翻译: 螺旋CT扫描系统包括快速处理来自系统检测器阵列的数据的实时平均器,以实质上实时地生产X射线图像。 可以与以常规或螺旋模式操作的扫描电子束CT系统或以常规或螺旋模式操作的旋转机械龙门CT扫描仪一起使用的平均器包括加法器和第一和第二存储器组和输入FIFO寄存器 。 FIFO寄存器同步地将系统检测器阵列数据传送给加法器。 加法器将该输入数据与之前存储在其中一个存储体中的数据进行组合。 例如,在第一次X射线扫描之后,通过FIFO和加法器将检测器数据写入第一数据库,并且在随后的扫描之后,将第一数据库中的原始数据之和加到相应的新数据中 到第二次扫描,并将新的求和写入第二个数据库。 第三次扫描后,将与第三次扫描相对应的新数据添加到第二个数据库中的数据,并将新的求和写入第一个数据库,依此类推。 最近获取的数据库中的数据除以每个结果图像(N)的扫描次数,以提供每次扫描的数据的运行实时或“即时”数据平均值。