| 吴显阳,赵珑.多层螺旋CT和同层动态CT电影扫描对小儿气管异物的诊断价值[J].中国医学影像技术,2010,26(1):86~88 |
| 多层螺旋CT和同层动态CT电影扫描对小儿气管异物的诊断价值 |
| Utility of spiral and cine CT scanning in children suspected of foreign body in trachea |
| 投稿时间：2009-05-21 修订日期：2009-07-17 |
| DOI： |
| 中文关键词: 异物 同层动态CT电影扫描 体层摄影术,螺旋计算机 |
| 英文关键词:Foreign bodies Cine CT imaging Tomography, spiral computed |
| 基金项目: |
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| 中文摘要: |
| 目的 探讨螺旋CT和同层动态CT电影诊断小儿气管异物价值。方法 对51例疑诊气管异物的患儿行胸部X线、胸部CT扫描及硬支气管镜检查,其中12例加行同层动态CT电影扫描。比较硬支气管镜检查和CT扫描结果。结果 硬支气管镜检查发现42例异物在主支气管或支气管叉,胸部CT扫描显示相同位置异物;硬支气管镜诊断为阴性的9例中,胸部CT检查6例为真阴性而3例为假阳性。CT检查出气管异物的灵敏度、特异度、准确率、阳性和阴性预测值分别为100％(95％可信区间,91％~100％),66.67％(29％~92％),94.12％(64％~99％),93.33％(81％~98％),和100％(54％~100％)。同层动态CT电影扫描正确诊断9例真阳性和3例真阴性,并可鉴别空气滞留与继发肺改变。结论 CT扫描可用于诊断小儿气管支气管异物,尤其是在诊断困难时。 |
| 英文摘要: |
| Objective To assess the value of spiral and cine CT for the diagnosis of foreign body in trachea in children. Methods Fifty-one consecutive pediatric patients suspected of aspirating radiolucent foreign body underwent chest radiography, 12 of them underwent three-dimensional spiral CT and cine CT scan within 24 h before rigid bronchoscopy. Results Rigid bronchoscopy showed foreign bodies in the main bronchus or bronchus intermedius of 42 patients, while spiral CT localized airway foreign bodies in the same patients. In the remaining 9 patients without foreign body found by rigid bronchoscopy, 6 were true-negative and 3 were false-positive on CT, making the overall sensitivity, specificity, accuracy, and positive and negative predictive values of CT scans was 100% (95% confidence interval, 91%－100%), 66.67% (29%－92%), 94.12% (64%－99%), 93.33% (81%－98%) and 100% (54%－100%), respectively. The cine CT scan correctly diagnosed 9 of 12 patients as true-positive and 3 as true-negative with identification of air trapping and secondary lung changes. Conclusion CT may be used in airway foreign body management of pediatric patients, especially with diagnostic dilemmas, and further prospective evaluations should be considered to assess its overall efficacy. |
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