Utility of spiral and cine CT scanning in children suspected of foreign body in trachea
- VernacularTitle: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
- Author:
Xianyang WU
;
Long ZHAO
- Publication Type:Journal Article
- Keywords:
Foreign bodies;
Cine CT imaging;
Tomography,spiral computed
- From:
Chinese Journal of Medical Imaging Technology
2010;26(1):86-88
- CountryChina
- Language:Chinese
-
Abstract:
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.
