猪肺体外模型预测气道异物CT值的研究  

CT value prediction of airway foreign bodies in an in vitro porcine lung model

作　　者：梁晖辉[1] 黄素梅[2] 何月梅 陈杰彬[1] 黄文东 张敏红[1] 董琴[1] 李勰 张国千[1] 陆莹莹[1] 林越国 李冲云[1] 蔡勇[1] LIANG Hui-hui;HUANG Su-mei;HE Yue-mei;CHEN Jie-bin;HUANG Wen-dong;ZHANG Min-hong;DONG Qin;LI Xie;ZHANG Guo-qian;LU Ying-ying;LIN Yue-guo;LI Chong-yun;CAI Yong(RadiologyDepartment,Maoming People's Hospital,Maoming 525000,China;Scientific Research Center,Maoming People's Hospital,Maoming 525000,China)

机构地区：[1]广东省茂名市人民医院放射科,广东茂名525000 [2]广东省茂名市人民医院科研中心,广东茂名525000

出　　处：《广东医科大学学报》2023年第3期271-274,共4页Journal of Guangdong Medical University

摘　　要：目的建立猪肺体外模型,了解异物进入肺内后CT值变化及常见异物CT值。方法将干花生、瓜子置于新鲜猪肺气管中,采用CT平扫获得CT值;将体外模型CT值与临床病例CT值进行比较,评估该模型在异物性质诊断中价值。结果干花生、瓜子在肺内CT值均比肺外CT值大(P<0.01)。20颗花生CT值与8颗临床病例花生CT值差异无统计学意义(P>0.05)。干花生放入肺内72 h内,其CT值先升高(24 h)后降低(72 h);而瓜子CT值在72 h内无明显改变(P>0.05)。生花生、干花生、熟花生、圆珠笔嘴在模型中CT值分别为19~43、-9~65、5~19、-356~-331 HU。结论成功构建猪肺体外模型,获得常见异物CT值。Objective To investigate the change of CT values of airway foreign bodies and CT values of common foreign bodies using an in vitro porcine lung model.Methods The dried peanuts and seeds were placed in the trachea of fresh porcine lung,and CT values were obtained by plain CT scan.The diagnostic value of foreign body nature was evaluated by comparison of CT values between in vitro models and clinical cases.Results CT values of intrapulmonary dried peanut and seeds were higher than those of extrapulmonary ones(P<0.01).CT values were comparable between 20 peanuts of models and 8 peanuts of clinical cases(P>0.05).CT values of dried peanuts increased at 24 h and decreased at 72 h,while those of seeds were unchanged during 72 h(P>0.05).CT values of raw,dried and cooked peanuts,and ballpoint pen nibs in the model were 19-43,-9-65,5-19 and-356--331 HU,respectively.Conclusion The in vitro porcine lung model is successfully constructed,and CT values of common foreign bodies are obtained.

关 键 词：气管异物 计算机断层扫描 猪肺 体外模型 

分 类 号：R445[医药卫生—影像医学与核医学]