平行束 meaning in English
collimated beam
Examples
- This paper regards narrow fan - beam scan mode as multi - detector parallel beam scan mode
本论文将窄角扇束扫描看成是多探头的平行束扫描。 - 7 . the precise interface analysis shows that the growth of the parallel rod - aggregate sic is self - organiae appearance of non - equilibrium system . the precise analysis of interlace model of solid - state displacement reaction needs method of non - equilibrium thermodynamic
7 .精致界面模型分析指出，平行束集状sic的生长属于非平衡系统的自组织现象，固态置换反应界面模型的严密分析还需要引入非平衡态热力学的概念方法。 - The narrow fan - beams are reset into parallel beam then the image reconstruction is conducted by parallel beam " convolution back projection algorithm , which combines the high scan efficiency with the convenience of image reconstruction . this paper analyses the parallelism in narrow fan - beam " convolution back projection algorithm , divides the task of image reconstruction into several subtasks , and discusses the parallelization of narrow fan - beam " decomposition and reset , parallel beam " convolution back projection , and image accumulation
对于窄角扇束扫描方式，把窄角扇束重排成平行束，再由平行束卷积反投影重建算法来重建图像，是把扫描的高效率和重建方式的简便易行很好的结合起来。本论文对窄角扇束卷积反投影算法进行了并行性分析，指出把图像重建任务分解为多个子任务并行工作，并在工作站机群上讨论了窄角扇束的分解、重排、平行束卷积反投影图像重建、图像合成的并行实现。 - The simulation results show that , either for parallel geometry or for fan beam geometry , high resolution images can be reconstructed by means of both the algorithms from the overlapped projection data . moreover , the quality of the images reconstructed by the virtual detector algorithm from the overlapped low - resolution projection data is almost as good as that of the images reconstructed directly from the high - resolution projection data
大量模拟试验结果表明，无论对平行束的相叠低分辨数据还是对扇形束的相叠低分辨数据，用虚拟探测器法和直接重建法均可由相叠低分辨数据重建出具有较高分辨率的图像。