窗宽窗位自适应算法在头颈CT血管成像三维重建的应用价值-《中国医学物理学杂志》

文章信息/Info

Title:: Application potential of adaptive window width and level algorithm in 3D vascularreconstruction from head and neck CT angiography

Author(s):: FANG Liping; ZHAO Hongbo; TAO Xiaofeng; Department of Radiology, Shanghai Ninth People’s Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200011, China

Keywords:: vascular reconstruction; adaptive algorithm; cumulative distribution function; inversion method

摘要:: 目的：为了实现不同剂量对比剂的头颈血管重建出来有一致的重建效果，探讨窗宽窗位自适应算法在头颈CT血管三维重建的应用价值。方法：选取行头颈部血管CTA检查患者100例，分别对数据进行直接重建血管和应用窗宽窗位自适应算法后再重建血管，对比两组数据的重建效果。结果：对于对比剂量偏多或偏少的病例，应用窗宽窗位自适应算法调整后再重建的整体效果优于直接重建的效果，对于颅内细小血管和斑块的显示效果更佳。结论：窗宽窗位自适应算法在头颈CT血管重建中有较高的应用价值，对于斑块的突出显示、不同剂量对比剂数据的适配和颅内细小血管的显示有较好的泛化性。

Abstract:: Objective To explore the application value of adaptive window width and level algorithm in 3D vascularreconstruction from head and neck CT angiography for achieving consistent reconstruction results at different contrast agentdosages. Methods Both direct vascular reconstruction and reconstruction after applying adaptive window width and levelalgorithm were conducted in 100 cases undergoing head and neck CT angiography; and the reconstruction results werecompared. Results In the cases with excessive or insufficient contrast agent, the overall effect of reconstructions usingadaptive window width and level algorithm was superior to that of direct reconstruction, particularly in displayingintracranial small vessels and plaques. Conclusion The adaptive window width and level algorithm has high applicationpotential in vascular reconstruction from head and neck CT angiography, and demonstrates superior generalization inhighlighting plaques, adapting to different contrast agent dosages, and displaying intracranial small vessels.