64层螺旋CT空间分辨力评价方法解析

Spatial resolution evaluation of 64-slice helical computed tomography

目的:针对目前CT空间分辨力的检验现状,提出更为科学严谨的64层螺旋CT空间分辨力检测要求。方法 :对现行行业标准中规定的空间分辨力测试要求进行分析,用试验数据来说明现行标准中存在的不足,同时提出64层螺旋CT空间分辨力的检测要求,并分析影响空间分辨力的因素。结果:64层螺旋CT空间分辨力测试要求能够很好地评价空间分辨力,避免了原有标准测试要求中存在的不足。结论:64层螺旋空间分辨力检测要求的提出,能够更好、更科学地评价其空间分辨力,保证图像质量更好地应用于临床。

Objective To put forward spatial resolution detection requirements of 64-slice helical CT based on analyzing the present situation of CT spatial resolution detection.Methods The requirements for spatial resolution in the existing industrial standards were analyzed, and some test data were used to prove the deficiency of the standards. Spatial resolu-tion detection requirements were proposed for 64-slice helical CT, and the factors affecting spatial resolution were ex-plored. Results The deficiencies in the original standards were eliminated. Conclusion The proposed requirements may facilitate the spatial resolution detection of 64-slice CT, and thus can enhance image quality for clinical diagnosis and treatment.