能谱CT碘基物质成像对老年肺炎合并肺栓塞的诊断价值  

Value of spectral CT iodine-based materials imaging in diagnosis of elderly pneumonia patients complicated with pulmonary embolism

作　　者：徐晓斌[1] 楼丹萍[1] 张建军[1] 葛焕祥[1] 吴伟峰[1] 

机构地区：[1]浙江医院放射科,浙江杭州310013

出　　处：《中华医院感染学杂志》2014年第18期4671-4673,共3页Chinese Journal of Nosocomiology

基　　金：浙江省医药卫生科技计划基金资助项目(2013KYB010)

摘　　要：目的探讨能谱CT碘基物质成像对老年肺炎合并肺栓塞的临床诊断价值,使其能够早期诊断、早期治疗。方法老年肺炎合并肺栓塞患者行常规CT平扫和能谱增强扫描,观察测量肺灌注异常区域、肺炎病灶、正常肺组织的碘含量,两者间比较采用两样本的秩和检验。结果肺灌注减低区碘含量、肺炎感染肺段平均碘含量与对侧或邻近正常肺野的碘含量分别为(0.32±0.21)、(0.461±0.31)、(1.93±0.45)g/L,肺灌注减低区与对侧或邻近正常肺野的碘含量差异有统计学意义(Z=-5.63,P<0.01),肺灌注减低区和肺炎感染肺段碘含量差异无统计学意义;碘基物质图成像与肺动脉CT成像在完全栓塞病变的诊断符合率为93.1%,部分栓塞病变的符合率为91.1%。结论能谱CT碘基物质成像给老年肺炎合并肺栓塞的诊断提供了一种崭新的影像学诊断方法。OBJECTIVE To explore the clinical value of spectral CT iodine-based material imaging in diagnosis of the elderly pneumonia patients complicated with pulmonary embolism so as to perform the diagnosis and treatment in early stage .METHODS The elderly pneumonia patients complicated with pulmonary embolism underwent the con-ventional CT scanning and spectral enhanced scanning ,then the iodine contents of perfusion defects ,pneumonia lesions ,and normal lung parenchyma were observed and measured ,and the two groups were compared by using the Chi-square test for categorical data .RESULTS The iodine content in the lung perfusion defects was （0 .32 ± 0 .21）g/L ,the pneumonia lung segment （0 .461 ± 0 .31）g/L ,the contralateral or adjacent normal lung paren-chyma （1 .93 ± 0 .45）g/L ,and there was significant difference in the iodine content between the lung perfusion de-fects and the contralateral or adjacent normal lung parenchyma （Z= -5 .63 ,P＆lt;0 .01） ,but there was no significant difference in the iodine content between the lung perfusion defects and the pneumonia lung segment .The accord-ance rate of the iodine-based materials imaging and pulmonary artery CT imaging was 93 .1% in diagnosis of com-plete embolism lesions ,91 .1% in diagnosis of partial embolism lesions .CONCLUSION The spectral CT iodine-based materials imaging provides a new imaging method for the diagnosis of the elderly pneumonia patients compli-cated with pulmonary embolism .

关 键 词：能谱 体层摄影术 X线计算机 肺炎 肺栓塞 

分 类 号：R446[医药卫生—诊断学]