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    • 45. 发明申请
    • Computer tomography method for periodically moving objects
    • 用于定期移动物体的计算机断层摄影方法
    • US20070140411A1
    • 2007-06-21
    • US10596151
    • 2004-11-26
    • Robert ManzkeDominic HeuscherMichael Grass
    • Robert ManzkeDominic HeuscherMichael Grass
    • A61B6/00G01N23/00G21K1/12H05G1/60
    • A61B6/541A61B5/0456A61B5/1135A61B6/027A61B6/032A61B6/503A61B6/504G01N23/046G01N2223/419G06T11/005G06T2211/412Y10S378/901
    • The invention relates to a computer tomography method, in which a periodically moving object, especially a heart, is irradiated by a beam bundle. In that process, intermediate images of one and the same subregion of the object are reconstructed using measured values from time intervals from different periods. That is, in each case exactly one period can be allocated to each intermediate image. The time intervals in the individual periods are adjusted in such a way that, after a reconstruction of the intermediate images using measured values that lie in the adjusted time intervals, a similarity measure applied to the intermediate images of the same subregion is minimized. This method can be applied to one, several or all subregions of the object that are reconstructable using measured values from time intervals from different periods. Finally, a computer tomography image is reconstructed, wherein exclusively measured values from the adjusted time intervals are used.
    • 本发明涉及一种计算机断层摄影方法,其中周期性移动的物体,特别是心脏被束束照射。 在该过程中,使用来自不同周期的时间间隔的测量值重建对象的一个​​和相同子区域的中间图像。 也就是说,在每种情况下,可以将一个周期分配给每个中间图像。 调整各个周期中的时间间隔,使得在使用位于调整时间间隔中的测量值重建中间图像之后,应用于相同子区域的中间图像的相似性度量被最小化。 可以使用来自不同周期的时间间隔的测量值将该方法应用于可重构的对象的一个​​,几个或所有子区域。 最后,重建计算机断层摄影图像,其中使用来自经调整的时间间隔的专用测量值。
    • 49. 发明申请
    • Computer tomography method for objects moving periodically
    • 用于周期性移动的物体的计算机断层摄影方法
    • US20070086562A1
    • 2007-04-19
    • US10596150
    • 2004-12-01
    • Robert ManzkeMichael Grass
    • Robert ManzkeMichael Grass
    • A61B6/00G01N23/00G21K1/12H05G1/60
    • G06T11/005A61B6/027A61B6/032A61B6/469A61B6/503A61B6/504A61B6/541G06T2211/412
    • The invention relates to a computer tomography method in which a bundle of rays passes through an object that is moving periodically, in particular a heart. During the acquisition of measured values, a movement signal dependent on the movement of the object is sensed. From this movement signal are determined periodically repeated phases of movement, after which a plurality of intermediate images of a region of the object are reconstructed, in particular at a low resolution, using measured values whose times of acquisition were situated in different phases of movement, thus enabling each intermediate image to be assigned to a phase of movement. The phase of movement in which the object moved least in the region is then identified by determining the intermediate image having the fewest motion artifacts. Finally, a computer tomographic image of the region is reconstructed, in particular with a high spatial resolution, from measured values whose times of acquisition were situated in the phase of movement in which there was the least movement by the object in said region.
    • 本发明涉及一种计算机断层摄影方法,其中一束光线穿过周期性地移动的物体,特别是心脏。 在获取测量值期间,感测到取决于物体的移动的移动信号。 从该移动信号周期性地确定重复的移动相位,之后使用其采集时间位于不同移动阶段的测量值来重建物体区域的多个中间图像,特别是以低分辨率, 从而能够将每个中间图像分配给运动阶段。 然后通过确定具有最少的运动伪像的中间图像来识别目标在该区域中最小移动的移动阶段。 最后,该区域的计算机断层图像,特别是具有高空间分辨率,由获取时间位于运动阶段的测量值,其中所述区域中物体的运动最少。