论文标题
PIPPI2021:一种在胎儿生长限制中对胎儿肝脏和胎盘的自动诊断和纹理分析的方法
PIPPI2021: An Approach to Automated Diagnosis and Texture Analysis of the Fetal Liver & Placenta in Fetal Growth Restriction
论文作者
论文摘要
胎儿生长限制(FGR)是一种普遍的妊娠条件,其特征是胎儿未能达到其遗传预先确定的生长潜力。我们探讨了模型拟合技术,线性回归机器学习模型,深度学习回归以及来自多对比度MRI的Haralick纹理功能的应用,用于FGR的多效器官分析。我们使用T2松弛计和扩散加权的MRI数据集(使用T2扩散扫描)正常生长,并进行了12个FGR妊娠年龄(GA)匹配的妊娠。我们应用了内腔氧气不一致的运动模型和新型的多室模型进行MRI胎儿分析,该模型具有提供多器官FGR评估的潜力,克服了经验指标的局限性(例如异常动脉多普勒发现),以评估胎盘功能障碍。胎盘和胎儿肝脏呈现了FGR和正常对照之间的关键区别(灌注降低,异常的胎儿血液运动和减少的胎儿血液氧合。这可能与胎儿血液对胎儿大脑的优先分解相关。这些特征进一步探索了这些特征,以进一步探索了它们在评估FGR严重性的方法中的作用,以确定FGR严重性的n =测试noter n =测试n n = 100 cy n off grgr note note n =)n = 100 n n MACHID GREG AT AT PRIFES notesive(100),该模型(14从MRI扫描到交付的时间,我们还探索了深度学习的使用,以回归胎儿器官的三个变量作为概念验证,研究FGR对胎儿器官的影响。
Fetal growth restriction (FGR) is a prevalent pregnancy condition characterised by failure of the fetus to reach its genetically predetermined growth potential. We explore the application of model fitting techniques, linear regression machine learning models, deep learning regression, and Haralick textured features from multi-contrast MRI for multi-fetal organ analysis of FGR. We employed T2 relaxometry and diffusion-weighted MRI datasets (using a combined T2-diffusion scan) for 12 normally grown and 12 FGR gestational age (GA) matched pregnancies. We applied the Intravoxel Incoherent Motion Model and novel multi-compartment models for MRI fetal analysis, which exhibit potential to provide a multi-organ FGR assessment, overcoming the limitations of empirical indicators - such as abnormal artery Doppler findings - to evaluate placental dysfunction. The placenta and fetal liver presented key differentiators between FGR and normal controls (decreased perfusion, abnormal fetal blood motion and reduced fetal blood oxygenation. This may be associated with the preferential shunting of the fetal blood towards the fetal brain. These features were further explored to determine their role in assessing FGR severity, by employing simple machine learning models to predict FGR diagnosis (100\% accuracy in test data, n=5), GA at delivery, time from MRI scan to delivery, and baby weight. Moreover, we explored the use of deep learning to regress the latter three variables. Image texture analysis of the fetal organs demonstrated prominent textural variations in the placental perfusion fractions maps between the groups (p$<$0.0009), and spatial differences in the incoherent fetal capillary blood motion in the liver (p$<$0.009). This research serves as a proof-of-concept, investigating the effect of FGR on fetal organs.