CT迭代重建技术原理及其研究进展

The progress on research and principles of computed tomography iterative reconstruction

CT技术的快速发展使得临床疾病的诊断水平得到极大提高,然而CT检查的辐射剂量对被照射人群存在潜在危害,并日渐被人们所关注。如何在保证图像质量的前提下尽可能降低辐射剂量是当今医学影像学领域的重要研究课题,而重建算法的改进成为CT低剂量研究的方向之一。随着重建算法在技术上取得的新突破以及迭代重建技术的日趋成熟,可实现CT检查中在降低辐射剂量的同时获得高质量的图像,从而使更多患者受益。

The quick development of computed tomography （CT） do great help to theimprovements diagnosis of clinical disease, however, the radiation dose issue of CT is also attractedmore attention by the public. It has been an important research field to reduce radiation dose as lowas possible with the premise of maintained image quality. Recently, iterative reconstruction of CThas got great advance. This article mainly introduces the brief principles and research progress of CTiterative reconstruction.