首页>
外国专利>
4-dimensional digital tomosynthesis and its applications in radiation therapy
4-dimensional digital tomosynthesis and its applications in radiation therapy
展开▼
机译:4维数字层析合成及其在放射治疗中的应用
展开▼
页面导航
摘要
著录项
相似文献
摘要
A 4-dimensional digital tomosynthesis system includes an x-ray source, an x-ray detector and a processor. The x-ray source is suitable for emitting x-ray beams to an object with a periodic motion. The periodic motion is divided into (n+1) time intervals, n being a positive integer. Each of the (n+1) time intervals is associated with a time instance ti, i=0, 1, 2, . . . , n. The x-ray detector is coupled to the x-ray source for acquiring projection radiographs of the object at each time instance ti for each scan angle based on the x-ray beams. The processor is communicatively coupled to the x-ray source and the x-ray detector for controlling the x-ray source and processing data received from the x-ray detector such that all projection radiographs acquired from all scan angles for each time instance ti are reconstructed and (n+1) sets of cross sections of the object are obtained. The cross section is either a coronal cross section or a sagittal cross section. Each of the (n+1) sets of cross sections is for a different time instance ti.
展开▼
机译:4维数字断层合成系统包括X射线源,X射线检测器和处理器。 X射线源适合于以周期性运动将X射线束发射到物体。周期性运动被分为(n + 1)个时间间隔,n是一个正整数。 (n + 1 B>)个时间间隔中的每个时间间隔都与时间实例t i Sub>,i = 0、1、2,...相关。 。 。 ,n。 X射线检测器耦合到X射线源,以基于X射线束在每个扫描角度的每个时间点t i Sub>获取对象的投影放射线照片。处理器通信地耦合至X射线源和X射线检测器,以控制X射线源并处理从X射线检测器接收的数据,使得对于每个时刻t <,从所有扫描角度获取的所有投影放射线照片。重建Sub> i Sub>并获得对象的(n + 1)组横截面。横截面是冠状横截面或矢状横截面。 (n + 1)个横截面集合中的每一个横截面都针对不同的时间实例t i Sub>。
展开▼