MR肺容积测算法评估胸廓畸形的可行性

发布时间：2019-01-01 19:01

【摘要】：目的评估MR肺容积测算法应用于胸廓畸形评估的可行性。方法选取胸廓畸形患儿52例,包括漏斗胸40例,鸡胸4例,扁平胸8例,术前行胸部MR检查,应用手绘-分层测量求和法测量患儿肺容量;行胸部CT检查,应用阈值限定及容积再现技术计算患儿肺容积;行常规肺功能检查,记录肺活量、深吸气量结果。比较采用MR测得的肺容积与CT肺容积间的相关性,分别比较MR肺容积、CT肺容积与肺功能检查结果之间的相关性。结果基于MR与基于CT的双肺总容积、左肺容积、右肺容积间的相关性均较好(r=0.91、0.91、0.91,P均0.01),CT肺容积与肺活量、深吸气量间的相关系数分别为0.78,0.70,MR肺容积与肺活量、深吸气量的系数分别为0.79,0.68(P均0.01)。结论采用MR图像测得的肺容积结果与常规CT肺容积重建结果一致性好,可以代替CT检查测量肺容积进行远期随诊。
[Abstract]:Objective to evaluate the feasibility of MR lung volume measurement in the assessment of thoracic deformity. Methods 52 cases of thoracic malformation were selected, including 40 cases of funnel chest, 4 cases of chicken chest and 8 cases of flat chest. The lung volume was measured by hand-drawn and stratified measurement with MR before operation. The lung volume was calculated by threshold limit and volume reconstruction technique, and the lung volume was recorded by routine pulmonary function examination, vital capacity was recorded and the results of deep inspiratory volume were recorded. To compare the correlation between lung volume measured by MR and that of CT, and to compare the correlation between pulmonary volume of MR, pulmonary volume of CT and results of pulmonary function test. Results the correlation between bilateral lung volume, left lung volume and right lung volume based on MR and CT was good (r 0.91 卤0.91g / kg, P < 0.01). The correlation coefficient between lung volume and vital capacity was 0.78g / 0.70, respectively. The coefficients of lung volume, vital capacity and inspiratory capacity of MR were 0.79 and 0.68, respectively (P 0.01). Conclusion the results of pulmonary volume measured by MR images are in good agreement with the results of conventional CT pulmonary volume reconstruction. It can be used to measure lung volume in place of CT for long-term follow-up.
【作者单位】：首都医科大学附属北京儿童医院影像中心;首都医科大学附属北京儿童医院胸外科;首都医科大学附属北京儿童医院骨科;首都医科大学附属北京儿童医院过敏反应科;
【基金】：首都临床特色应用研究(Z141107002514005) 北京市医院管理局临床技术创新项目(XMLX201407) 北京市优秀人才培养资助青年骨干个人项目(2014000021469G240)
【分类号】：R726.5;R445.2

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