Apparatus and methods for performing scalable multislice computed tomography scan
    1.
    发明授权
    Apparatus and methods for performing scalable multislice computed tomography scan 有权
    用于执行可扩展多层计算机断层摄影扫描的装置和方法

    公开(公告)号:US06275562B1

    公开(公告)日:2001-08-14

    申请号:US09193586

    申请日:1998-11-17

    IPC分类号: A61B600

    摘要: A scalable multislice system which, in one embodiment, includes a scalable multi-slice detector, a scalable data acquisition system (SDAS), scalable scan management, control, and image reconstruction processes, and scalable image display and analysis, is described. In the axial multi-slice scan mode, multiple rows of scan data can be processed before image reconstruction, and the data can be used to produce either multiple thin slices or a reduced number of thicker slices with reduced image artifact. In addition, images with thicker slice thicknesses can be later reconstructed retrospectively into thinner slices of images based on clinical diagnosis needs. As a result, the number of unwanted images for viewing, filming, and archiving is reduced. In addition, high z-axis resolution images can be later reconstructed for patient diagnosis. In the helical multi-slice scan mode, multiple combinations of patient table speed and x-ray beam and detector collimations, enable generation of images having different z-axis resolution can be produced. For example, at the table speed of 30 mm/rotation, images of 5-10 mm slices can be generated. Thicker slice (such as 10 mm) images can be generated prospectively, which provides the benefit of a reduced number of images and reduced image reconstruction time. At a later time, thinner slice images can be generated retrospectively using the same data. Such thinner slice images may be necessary depending on the clinical application needs. Such thinner slice images can be generated without rescanning the patient.

    摘要翻译: 描述了在一个实施例中包括可扩展多片检测器,可伸缩数据采集系统(SDAS),可扩展扫描管理,控制和图像重建处理以及可缩放图像显示和分析的可扩展多层系统。 在轴向多切片扫描模式中,可以在图像重建之前处理多行扫描数据,并且可以使用数据产生多个薄切片或减少数量较薄的具有减少图像伪影的较厚切片。 此外,根据临床诊断需要,可以随后将具有较厚切片厚度的图像追溯重建成更薄的图像片段。 因此,减少了用于观看,拍摄和归档的不需要的图像的数量。 此外,高z轴分辨率图像可以稍后重建用于患者诊断。 在螺旋多层扫描模式中,可以产生患者台速度和X射线束和检测器准直的多种组合,使得能够生成具有不同z轴分辨率的图像。 例如,在30mm /旋转的台面速度下,可以产生5-10mm切片的图像。 可以前瞻性地生成更厚的图像(例如10 mm)图像,这样可以减少图像数量和减少图像重建时间。 稍后,可以使用相同的数据追溯生成较薄的切片图像。 根据临床应用需要,这样较薄的切片图像可能是必需的。 可以在不重新扫描患者的情况下生成这样较薄的切片图像。

    System and method of imaging using a variable speed for thorax imaging
    2.
    发明授权
    System and method of imaging using a variable speed for thorax imaging 有权
    用于胸部成像的变速系统和成像方法

    公开(公告)号:US07848790B2

    公开(公告)日:2010-12-07

    申请号:US10260006

    申请日:2002-02-28

    IPC分类号: A61B5/05

    CPC分类号: A61B6/541 A61B6/032

    摘要: A system and method of medical imaging using a variable speed patient positioning table are provided. The patient positioning table is configured to operate at a plurality of table speeds during acquisition of data from a selected region, such as the thorax region baying predefined cardiac and non-cardiac regions. In a non-cardiac region, the table is controlled to move at one speed and when the cardiac region is detected, the table is controlled to move at another speed, preferably faster than in the cardiac region to speed data acquisition and eliminate motion artifacts.

    摘要翻译: 提供了使用变速病人定位台的医学成像系统和方法。 患者定位表被配置为在从所选择的区域(例如具有预定的心脏和非心脏区域的胸部区域)获取数据期间以多个表格速度操作。 在非心脏区域中,控制桌子以一个速度移动,并且当检测到心脏区域时,控制桌子以另一个速度移动,优选地比心脏区域更快地移动,以加速数据采集并消除运动伪像。