第三代双源CT低剂量联合ADMIRE在肺穿刺活检中的应用  

Application of Low-dose Dual-source CT combined with ADMIRE in lung puncture biopsy

作　　者：曹利锋 石永刚[1] Cao Lifeng;Shi Yonggang(The School of Basic Medical Science of Zhengzhou University,Zhengzhou,He'nan 450000)

机构地区：[1]郑州大学基础医学院,河南郑州450000

出　　处：《基层医学论坛》2022年第31期100-102,118,共4页The Medical Forum

摘　　要：目的 探讨第三代双源CT低剂量联合ADMIRE在经皮穿刺肺活检术(percutaneous lung biopsy,PLB)中引导准确性及对图像质量的影响。方法 将60例发现肺脏占位需要进一步检查确诊的患者随机分成2组,常规剂量组30例,采用普通扫描模式(120 KV,110 m As),图像数据采用滤波后的背投影(FBP)重建获得对照组图像;低剂量组30例,采用双源CT低剂量扫描模式,(150 KV,40 m As),扫描后采取高级建模迭代重建(ADMIRE)(强度3)进行重建获得观察组图像。记录2组图象质量、辐照剂量容积CT剂量指数(CTDIvol)值和剂量长度乘积(DLP)值。对比2组穿刺成功率及并发症发生率。结果 与常规剂量组相比,双源CT低剂量组CTDIvo I、DLP均降低(P<0.05),2组图像质量均能满足临床穿刺需要。2组穿刺成功率及并发症发生率差异无统计学差异(P>0.05)。结论 双源CT低剂量联合ADMIRE,不仅能快速扫描,得到的图像质量良好,而且可以使患者辐射剂量大幅度降低,为低剂量CT引导下的PLB提供了一种扫描方法。ObjectiveTo explore the application value of dual-source CT low-dose mode combined with ADMIRE in percutaneous lung biopsy.Methods Sixty patients with pulmonary mass were divided into two groups.Thirty patients were in the conventional dose group and received normal scanning mode(120 KV,110 mAs).Thirty patients in the low-dose group were subjected to dual-source CT low-dose scanning mode(150 KV,40 mAs).The images obtained after scanning were processed by ADMIRE(full model iterative reconstruction).The image quality,radiation dose CTDIvol value and DLP value were compared and analyzed.The puncture success rate and complication rate of the two groups were compared.Results Compared with the conventional dose group,ctdivoi and DLP in the low dose group of dual source CT decreased(P<0.05),and the image quality of the two groups could meet the needs of clinical puncture.There was no significant difference in the percentage of successful puncture and the percentage of complications between the two groups(P>0.05).Conclusion Dual-source CT low-dose mode combined with ADMIRE can not only obtain fast scanning and good images,but also significantly reduce the radiation dose of patients,providing a new scanning method for low-dose CT-guided percutaneous lung puncture biopsy.

关 键 词：肺穿刺活检 双源CT 低剂量 ADMIRE模式 

分 类 号：R445.6[医药卫生—影像医学与核医学]