低剂量多层螺旋CT后处理技术对食管枣核异物的诊断及应用价值  

The diagnosis and application value of low dose multi spiral CT post-processing technique for incarcerated date pit in esophagus

作　　者：季泽强[1] 孙梦月 于志军[1] 管星[1] 母建奎 胡宏亮[1] JI Zeqiang;SUN Mengyue;YU Zhijun;GUAN Xing;MU Jiankui;HU Hongliang(Department of Radiology,the First Hospital of Hebei Medical University,Shijiazhuang,Hebei Province 05003l,China)

机构地区：[1]河北医科大学第一医院放射科,河北石家庄050031

出　　处：《实用放射学杂志》2023年第1期33-36,共4页Journal of Practical Radiology

基　　金：河北省医学科学研究重点课题计划项目(20180252)。

摘　　要：目的 探讨多层螺旋CT(MSCT)低剂量扫描及图像后处理技术在食管枣核异物诊断中的临床应用价值.方法 前瞻性选取拟诊食管枣核异物行颈胸部MSCT扫描的患者50例,随机分为低剂量组(25例)和常规剂量组(25例);沿枣核长轴行多平面重建(MPR),结合横断面CT观察食管枣核异物的CT表现,并对CT图像质量及内镜资料进行分析.结果 低剂量组信噪比(SNR)及对比噪声比(CNR)低于常规剂量组,差异有统计学意义,2组图像质量主观评分差异无统计学意义,体质量指数(BMI)与图像质量主观评分、SNR、CNR均呈负相关,低剂量MSCT对食管枣核异物诊断的灵敏度、特异度、准确率均为100%.结论 低剂量MSCT扫描适用于食管枣核异物术前诊断,对异物定性、定位以及是否有穿孔并发症的诊断具有重要的应用价值.Objective To investigate the clinical application value of multi spiral computed tomography(MSCT)low dose scanning and image post-processing technique for incarcerated date pit in esophagus.Methods A total of 50 patients with incarcerated date pit in esophagus who underwent neck and chest MSCT scanning were prospectively collected and randomly divided into two groups,including low dose group(n=25)and routine dose group(n=25).The CT manifestations of incarcerated date pit in esophagus were observed via multiplanar reconstruction(MPR)and axial CT imaging,and image quality of CT and endoscopic data were analyzed.Results The signal-to-noise ratio(SNR)and contrast-to-noise ratio(CNR)of the low dose group were lower than those of the routine dose group,and there was statistically significant difference in SNR and CNR between the two groups.There was no significant difference in subjective image quality score between the two groups.There was significantly negative correlation between body mass index(BMI)and subjective image quality score,SNR,CNR,respectively.The sensitivity,specificity and accuracy of low dose MSCT in the diagnosis of incarcerated date pit in esophagus were all 100%.Conclusion Low dose MSCT scan is suitable for preoperative diagnosis of incarcerated date pit in esophagus.It plays an important role in showing the location and perforation complications of the incarcerated datepit in esophagus.

关 键 词：多层螺旋CT 后处理技术 食管 枣核异物 

分 类 号：R814.42[医药卫生—影像医学与核医学] R571[医药卫生—放射医学]