Growth Patterns of Fetal Lung Volumes in Healthy Fetuses and Fetuses With Isolated Left-Sided Congenital Diaphragmatic Hernia

2016 ◽  
Vol 35 (6) ◽  
pp. 1159-1166 ◽  
Author(s):  
Rodrigo Ruano ◽  
Ingrid Schwach Werneck Britto ◽  
Nicolas Sananes ◽  
Wesley Lee ◽  
Haleh Sangi-Haghpeykar ◽  
...  
2000 ◽  
Vol 183 (5) ◽  
pp. 1067-1069 ◽  
Author(s):  
Danielle S. Walsh ◽  
Anne M. Hubbard ◽  
Oluyinka O. Olutoye ◽  
Lori J. Howell ◽  
Timothy M. Crombleholme ◽  
...  

Author(s):  
Joseph Davidson ◽  
Alena Uus ◽  
Alexia Egloff Collado ◽  
Milou Van Poppel ◽  
Jacqueline Matthew ◽  
...  

Abstract Objective:Evaluate deformable slice-to-volume registration (DSVR) to calculate 3D-segmented total lung volume (TLV) in fetuses with congenital diaphragmatic hernia, congenital lung lesions and healthy controls, with comparison to 2D-manual segmentation. Design:Pilot study Setting:Regional fetal medicine referral centre Sample:Fetal MRIs performed for clinical indications (abnormal cases) or as research participants (healthy controls) Methods:Sixteen MRI datasets of fetuses (22-32 weeks GA). Diagnosis: CDH(n=5), CPAM(n=2), CDH with BPS(n=1) and healthy control(n=8). DSVR was used for reconstruction of 3D isotropic (0.85 mm) volumes of fetal body followed by semi-automated lung segmentation. The resulting 3D TLV were compared to the traditional 2D-based volumetry, and a normogram of DSVR-derived fetal lung volumes from 100 cases was produced. Main Outcome Measures:Concordance with 2D-volumetry assessed with Bland-Altman analysis, results of segmentations presented visually. Observed/Expected values were calculated for abnormal cases based upon the normogram. Results:DSVR-derived TLV values have high correlation with the 2D-based measurements but with a consistently lower volume; bias -1.44cm3 [95% limits: -2.6 to -0.3] with improved resolution able to exclude hilar structures even in severe motion corruption or in cases of lung hypoplasia. Conclusions:Application of DSVR for fetal MRI provides a solution for analysis of motion corrupted scans and does not suffer from the interpolation error inherent in 2D-segmentation as per current clinical practice. It increases information content of acquired data in terms of visualising organs in 3D space and quantification of volumes, which we believe will have important value for counselling and surgical planning. Keywords:Fetal MRI; congenital diaphragmatic hernia; CPAM; lung volume


2014 ◽  
Vol 49 (5) ◽  
pp. 688-693 ◽  
Author(s):  
Irving J. Zamora ◽  
Oluyinka O. Olutoye ◽  
Darrell L. Cass ◽  
Sara C. Fallon ◽  
David A. Lazar ◽  
...  

2010 ◽  
Vol 31 (4) ◽  
pp. 269-273 ◽  
Author(s):  
K Terui ◽  
A Omoto ◽  
H Osada ◽  
T Hishiki ◽  
T Saito ◽  
...  

2022 ◽  
Author(s):  
Kasra Khalaj ◽  
Rebeca Lopes Figueira ◽  
Lina Antounians ◽  
Sree Gandhi ◽  
Matthew Wales ◽  
...  

Pulmonary hypoplasia secondary to congenital diaphragmatic hernia (CDH) is characterized by impaired branching morphogenesis and differentiation. We have previously demonstrated that administration of extracellular vesicles derived from rat amniotic fluid stem cells (AFSC-EVs) rescues development of hypoplastic lungs at the pseudoglandular and alveolar stages in rodent models of CDH. Herein, we tested whether AFSC-EVs exert their regenerative effects at the canalicular and saccular stages, as these are translationally relevant for clinical intervention. To induce fetal pulmonary hypoplasia, we gavaged rat dams with nitrofen at embryonic day 9.5 and demonstrated that nitrofen-exposed lungs had impaired branching morphogenesis, dysregulated signaling pathways relevant to lung development (FGF10/FGFR2, ROBO/SLIT, Ephrin, Neuropilin 1, beta-catenin) and impaired epithelial and mesenchymal cell marker expression at both stages. AFSC-EVs administered to nitrofen-exposed lung explants rescued airspace density and increased the expression levels of key factors responsible for branching morphogenesis. Moreover, AFSC-EVs rescued the expression of alveolar type 1 and 2 cell markers at both canalicular and saccular stages, and restored markers of club, ciliated epithelial, and pulmonary neuroendocrine cells at the saccular stage. AFSC-EV treated lungs also had restored markers of lipofibroblasts and PDGFRA+ cells to control levels at both stages. EV tracking showed uptake of AFSC-EV RNA cargo throughout the fetal lung and an mRNA-miRNA network analysis identified that several miRNAs responsible for regulating lung development processes were contained in the AFSC-EV cargo. These findings suggest that AFSC-EV based therapies hold potential for restoring fetal lung growth and maturation in babies with pulmonary hypoplasia secondary to CDH.


2016 ◽  
Vol 462 ◽  
pp. 71-76 ◽  
Author(s):  
Hiroyuki Tsuda ◽  
Tomomi Kotani ◽  
Tomoko Nakano ◽  
Kenji Imai ◽  
Shima Hirako ◽  
...  

2011 ◽  
Vol 18 (2) ◽  
pp. 231-243 ◽  
Author(s):  
Cristina Nogueira-Silva ◽  
Emanuel Carvalho-Dias ◽  
Paulina Piairo ◽  
Susana Nunes ◽  
Maria J. Baptista ◽  
...  

2020 ◽  
Vol 56 (S1) ◽  
pp. 138-138
Author(s):  
R. Corroenne ◽  
A.N. Shetty ◽  
K. Zhu ◽  
R.M. Johnson ◽  
A. Mehollin‐Ray ◽  
...  

2005 ◽  
Vol 21 (1) ◽  
pp. 39-44 ◽  
Author(s):  
F. Bargy ◽  
S. Beaudoin ◽  
P. Barbet

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