目的 探讨CT窗技术对动脉粥 样硬化(atherosclerosis, AS)早期斑 块的诊断价值。方法 以我院2014年1月 至2015年10月收治的60例动脉粥样硬化 早期斑块患者为研究对象，均接受常规 CT、CT窗技术检查，比较不同检查方 式诊断准确率，同时观察比较不同窗宽 下AS早期斑块显示率。结果 CT窗技术 对AS早期斑块诊断准确率为95.0%，显 著高于常规CT的83.3%(P＜0.05)。窗宽 均为200Hu时，窗宽250Hu下AS早期斑块 显示率95.0%，均明显高于窗宽300Hu、 350Hu、400Hu、450Hu下AS早期斑块显示 率的81.9%、53.0%、23.7%、7.7%，差异 有统计学意义(P＜0.05)。结论 CT窗技术 相比常规CT在AS早期斑块显示上有明显 优势，且在窗位200Hu，窗宽200-250Hu 时对AS早期斑块显示率较高。

Objective To investigate the value of CT window technique in the diagnosis of early plaque of atherosclerosis (AS). Methods Sixty cases of patients with early plaque of AS admitted in our hospital from January 2014 to October 2015 were selected as the study objects. All of them received routine CT and CT window technique examination. The diagnostic accuracy rates of different inspection methods were compared. Meanwhile, the display rate of AS early plaque under different window width was observed and compared. Results The accuracy of CT window technique in diagnosis of early plaque of AS (95.0%) was significantly higher than that of routine CT (83.3%) (P<0.05). When the window level was 200Hu, the display rate of early plaque of AS under window width 250Hu (95.0%) was significantly higher than those under window width 300Hu, 350Hu, 400 Hu and 450Hu (81.9%, 53.0%, 23.7%, 7.7%) (P<0.05). Conclusions Compared with routine CT, CT window technique has obvious advantages in displaying the early plaque of AS, and when the window level was 200Hu, the display rate of early plaque of AS under window width 200~250Hu is higher.