应用超高分辨率CT对小于3cm肺磨玻璃密度结节的诊断价值研究  

Diagnostic Value of Ultra-High Resolution CT for Pulmonary Ground-Glass Density Nodules Less than 3cm

作　　者：张聆 廖娟[1] 鲜锟 ZHANG Ling;LIAO Juan;XIAN Kun(Discipline of Respiratory and Critical Diseases,Shifang People's Hospital,Shifang 618400,Sichuan Province,China;Discipline of Respiratory and Critical Diseases,Jiajiang County People's Hospital,Leshan 614100,Sichuan Province,China)

机构地区：[1]什邡市人民医院呼吸与危重症学科,四川什邡618400 [2]夹江县人民医院呼吸与危重症学科,四川乐山614100

出　　处：《中国CT和MRI杂志》2022年第6期66-67,77,共3页Chinese Journal of CT and MRI

基　　金：四川省卫生厅科研基金资助项目(140037)。

摘　　要：目的探究应用超高分辨率CT对小于3cm肺磨玻璃密度结节的诊断价值。方法回顾性分析本院2017年1月至2019年1月收治的42例肺磨玻璃密度结节患者的临床资料,观察MSCT检查平扫和增强扫描的影像特点,比较常规高分辨率CT检查和超高分辨率CT诊断肺磨玻璃密度结节的效能,分析不同诊断方式的CNR、SNR及图像噪声情况。结果42例肺磨玻璃密度结节患者中,经常规高分辨率CT明确诊断的有14例,可能性大的有16例,有12例患者无法诊断;经超高分辨率CT明确诊断的有27例,可能性大的有13例,仅2例患者无法诊断。两种检查方法组间数据比较差异具有统计学意义(P<0.05);超高分辨率CT的CNR、SNR值显著低于常规高分辨率CT,图像噪声显著高于常规高分辨率CT(P<0.05)。结论超高分辨CT检查可清楚显示肺磨玻璃密度结节的影像学特点,在诊断鉴别小于3cm肺磨玻璃密度结节上具有一定的价值,结合图像特征可有效提高诊断准确率。Objective To explore the diagnostic value of ultra-high resolution CT for pulmonary ground-glass density nodules less than 3 cm.Methods The clinical data of 42 patients with pulmonary ground-glass density nodules admitted from January 2017 to January 2019 in our hospital were retrospectively analyzed.The imaging features of MSCT plain and enhanced scans were observed.The efficacy of conventional high-resolution CT examination and ultra-high resolution CT in the diagnosis of pulmonary groundglass density nodules was compared,and CNR,SNR,and image noise conditions of different diagnostic methods were analyzed.Results In the 42 patients with pulmonary ground-glass density nodules,14 were diagnosed by conventional high-resolution CT,there were 16 cases with high probability,and 12 cases could not be diagnosed.There were 27 cases diagnosed by ultra-high resolution CT and 13 cases with high probability.Only 2 cases could not be diagnosed.The data between the two groups was statistically significant(P<0.05).The CNR and SNR values of ultra-high resolution CT were significantly lower than those of conventional high-resolution CT,and the image noise was significantly higher than that of conventional high-resolution CT(P<0.05).Conclusion Ultra-high-resolution CT examination can clearly show the imaging features of pulmonary ground-glass density nodules.It has certain value in the diagnosis and identification of pulmonary ground-glass density nodules.Combining image features can effectively improve the diagnostic accuracy.

关 键 词：超高分辨率CT 小于3cm肺磨玻璃密度结节 诊断价值 

分 类 号：R563[医药卫生—呼吸系统] R445.3[医药卫生—内科学]