螺旋CT后处理技术对诊疗食管异物的临床增益价值  

The value of MSCT post-processing technique in the diagnosis of esophageal foreign body

作　　者：董科[1] 应明亮[1] 周绍斌[1] 黄宏伟[1] 

机构地区：[1]金华市中心医院影像科,浙江321000

出　　处：《放射学实践》2012年第12期1328-1330,共3页Radiologic Practice

摘　　要：目的:探讨多层螺旋CT(MSCT)后处理技术对诊疗食管异物的临床增益价值。方法:回顾性分析61例临床诊断或疑诊为食管异物的影像学表现,结合临床资料,比较X线吞钡挂棉检查与MSCT后处理技术对食管异物检查结果的差异,并进行统计学检验。MSCT后处理技术包括多平面重组(MPR)、最大密度投影(MIP)、容积再现(VR)。结果:X线吞钡挂棉检查的敏感度为79.1%(34/43),漏诊率为21.9%(9/43);特异度为72.2%(13/18),误诊率为27.8%(5/18);准确度为77.0%(47/61)。MSCT后处理技术的敏感度为97.7%(42/43),漏诊率为2.3%(1/43);特异度为100.0%(18/18);准确度为98.4%(60/61);2种检查方法的各项差异均有统计学意义(P<0.05)。结论:MSCT后处理技术相对于X线吞钡挂棉检查可明显提高对食管异物的检出率,具有更高的准确性;并可评价食管损伤程度及并发症的情况,对临床诊疗食管异物具有很好的增益价值。Objective：To explore the value of multi-slice spiral CT （MSCT） post-processing technique in the diagnosis of esophageal foreign body. Method：Sixty one patients with clinical diagnosis or being suspected of having esophageal for- eign bodies underwent esophagus barium-soaked cotton and MSCT. Imaging findings were retrospectively analyzed, and clin- ical data were also studied. The detection rates of esophageal foreign body of different methods were compared. The three- dimensional reconstruction of MSCT included multi-planar reconstruction （MPR）, maximum intensity projection （MIP） and volume rendering （VR）. Results： Barium-soaked cotton for diagnosis of esophageal foreign body had a sensitivity of 79.1%, specificity of 72. 2%, accuracy of 77. 0% and missed diagnosis rate of 21. 9%. The three-dimensional reconstruction of MSCT for diagnosis of esophageal foreign body had a sensitivity of 97.7 %, specificity of 100.0 %, accuracy of 98.4 %and missed diagnosis rate of 2.3%. There was statistically significant difference between the two methods （P〈0.05）. Conclu- sion： As compared with the barium-soaked coffon method,the MSCT post-processing technique can provide a higher detec- tion rate of esophageal foreign body obviously,it can also evaluate the conditions of the surrounding injuries and complica- tions of the esophagus.

关 键 词：体层摄影术 X线计算机 图像处理 计算机辅助 食管 异物 

分 类 号：R816.8[医药卫生—放射医学]