CT对急性阑尾炎的诊断价值  

The value of CT scanning in the diagnosis of acute appendicitis

作　　者：纪祥[1] 吕建广[1] 邱国时 

机构地区：[1]广东省肇庆市第二人民医院CT室,广东肇庆526060

出　　处：《实用医学影像杂志》2005年第4期208-210,共3页Journal of Practical Medical Imaging

摘　　要：目的评价CT扫描对急性阑尾炎的诊断价值。方法对临床怀疑急性阑尾炎患者48例均做CT平扫,层厚10mm,间距10mm,扫描范围从腰3椎体至耻骨联合。CT诊断急性阑尾炎的标准包括阑尾增粗横径超过6mm,阑尾结石伴阑尾周围炎性改变,CT诊断结果与手术病理结果进行对照。结果CT检查发现29例真阳性,15例真阴性,3例假阴性和1例假阳性。CT诊断急性阑尾炎的敏感性为90%,特异性为96%,准确性为91%,阳性预测值93%,阴性预测值为83%。15例无阑尾炎患者,CT发现其他病变11例(73%)。结论CT对急性阑尾炎诊断具有高度的敏感性、特异性和准确性。对真阴性患者可发现其他各种病变。Objective To evaluate the usefulness of CT scanning for diagnosing the acute appendicitis. Methods Forty-eight patients with clinically suspected acute appendicitis underwent conventional CT scans. The slice thinkness and slice interval were 10 mm. The scamping range covered frum L, level to pubic symphysis , The CT diagnostic criteria of acute appendicitis included appendicular transverse diameters thickening more than 6mm and appendicolithiasis associated with peri-appendiceal inflammatory changes. CT findings in all patients were correlated with pathological findings. Results Among 48 cases with suspected acute appendicitis, CT directly demonstrated 29 true positive, 15 true negative, 3 false negative and 1 false positive case. The sensitivity, specificity, accuracy, positive predictive value and negative predictive value of CT scans for acute appendicitis were 90 %, 96 %, 91%, 93 % and 83 % , respectively. In 15 cases without appendicitis, CT detected other lesions in 11 cases （73 % ）. Conclusion CT scanning has high sensitivity, specificity and accuracy for diagnosing acute appendicitis and it can also detect lesions.

关 键 词：阑尾 阑尾炎 体层摄影术 X线计算机 

分 类 号：R816.5[医药卫生—放射医学]