Regression analysis of expected fetal lung volume on MRI
10.13929/j.1003-3289.201811135
- VernacularTitle: 回归分析胎儿MRI肺容积预期值
- Author:
Chaoxiang YANG
1
Author Information
1. Department of Radiology, Guangdong Women and Children Hospital
- Publication Type:Journal Article
- Keywords:
Fetus;
Lung volumetry;
Magnetic resonance imaging
- From:
Chinese Journal of Medical Imaging Technology
2019;35(4):578-581
- CountryChina
- Language:Chinese
-
Abstract:
Objective To establish domestic expected fetal lung volume (FLV) regression formula according to gestational week (GW) with large sample and data distributed evenly. Methods Prenatal MRI of 457 fetuses from 18 to 39 gestational weeks with normal chest was collected. FLV was measured on the axial images of single shot fast spin echo sequence. All FLV data were used for regression analysis. The regression model was determined according to the degree of fitting and test results, and the expected FLV regression formula based on GW was obtained. Results The mean GW of 457 fetuses was (29.44±4.61) weeks. There were 43.11% (197/457) fetuses at 28 weeks and below. FLV based on MRI measurement ranged from 9.47 ml to 131.48 ml, mean (50.78±23.76) ml. The final regression formula was expected FLV=0.004g2.76 (g=GW, R2=0.845, P<0.001). Conclusion The final regression formula of expected FLV is simple, practical and applicable to most fetuses, and is helpful to the research on prenatal assessment of domestic fetuses lung.
