Application value of the FLASH CT in the diagnosis of tracheal and bronchial foreign body in infants

• 作 者: hangjiahu
• 机 构: West China Hospital
• 出 处: 中华放射学学术大会2016、中华医学会第23次全国放射学学术大会暨中华医学会第24次全国影像技术学术大会
• 发表日期: 2016年5期
• 关键词: Flash CT diagnosis infant foreign body tracheal and bronchial

　　Purpose:To investigate the imagine diagnostic value of FLASH CT and post-processing techniques in infants with tracheal and bronchial foreign body. Materials and Methods: 30 cases of infants with highly suspected diagnosis of tracheal or bronchial foreign bodies in our hospital were evaluated and compared by flash CT post-processing techniques,including multi-planar reconstruction (MPR), minimum intensity projection (MinIP), volume rendering technique (VRT) in airway development (Airways ), the developing lung parenchyma (lung parenchyma).Result of the post-processing techniques and the bronchoscopy were compared to analyze tne value of FLASH CT. Results: 30 cases of children with an average age of 3.7 years. All the 30 infants got clear images, of which 25 cases were diagnosed of trachea and bronchus foreign bodies,including trachea 2 cases,right bronchial 15 cases and left bronchial 8 cases . Compared with bronchoscopy results, false negative in 2 cases.The two methods in the diagnosis of tracheal and bronchial foreign body has no significant difference (p <0.05). Sensitivity and specificity of Three-dimensional volumetric reconstruction of CT were 92.6% (25/27) and 100% (3/3).And the diagnostic accuracy was 93.3%. Conclusion: Flash CT with processing technology is an accurate, noninvasive method ,which can clearly show the location of foreign body,shape,size,bronchial stenosis. Therefore,it has important guiding significance of whether the bronchoscope should be taken . Also,the radiation dose and scan time can be significantly decreased using Flash CT.In a word,Flash CT makes CT examination more feasible for infants.