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Plut D, Bauer M, Mikić A, Winant AJ, Park H, Lee EY. Pediatric Congenital Lung Malformations: Contemporary Perspectives on Imaging Characteristics. Semin Roentgenol 2024; 59:249-266. [PMID: 38997180 DOI: 10.1053/j.ro.2024.03.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2024] [Revised: 03/13/2024] [Accepted: 03/15/2024] [Indexed: 07/14/2024]
Affiliation(s)
- Domen Plut
- Clinical Radiology Institute, University Medical Centre Ljubljana, Ljubljana, Slovenia; Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia.
| | - Matthew Bauer
- Department of Radiology, Boston Children's Hospital, Harvard Medical School, Boston, MA
| | - Aleksandra Mikić
- Clinical Radiology Institute, University Medical Centre Ljubljana, Ljubljana, Slovenia; Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - Abbey J Winant
- Department of Radiology, Boston Children's Hospital, Harvard Medical School, Boston, MA
| | - Halley Park
- Department of Radiology, Nicklaus Children's Hospital, Miami, FL
| | - Edward Y Lee
- Department of Radiology, Boston Children's Hospital, Harvard Medical School, Boston, MA
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Ashwal E, Sgro J, Shannon P, Chong K, Glanc P, Chitayat D. Lung Hypoplasia in Fetuses with Skeletal Dysplasia Determined by Fetal Lung Weight: Which Ultrasound Measurement/Ratio Has the Highest Detection Rate. Fetal Diagn Ther 2023; 51:23-29. [PMID: 37778334 DOI: 10.1159/000534209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Accepted: 08/11/2023] [Indexed: 10/03/2023]
Abstract
INTRODUCTION To determine lung hypoplasia in cases with fetal skeletal dysplasia based on the total lung weight at autopsy as the most accountable surrogate marker for pulmonary hypoplasia. METHODS This retrospective cohort study included all pregnancies with antenatal diagnosis of skeletal dysplasia (2012-2018). We included only cases in which information on fetal biometry was available within 2 weeks before delivery and had autopsy and skeletal X-rays + molecular analysis using extracted fetal DNA. We compared the predictive accuracy of fetal sonographic body-proportional ratios (BPRs) including: (1) thoracic circumference-to-abdominal circumference ratio, (2) the femur length-to-abdominal circumference (FL/AC) ratio, (3) head circumference-to-abdominal circumference ratio, and (4) foot length-to-femur length ratio. Lung hypoplasia was defined as total lung weight below -2 SD from the expected mean for gestational age. RESULTS Fifty three pregnancies with antenatal diagnosis of skeletal dysplasia underwent autopsy included. Lung hypoplasia was determined in 34 (64.1%). Median of gestational age at last sonographic assessment was 21.3 (19.9-24.9) weeks. FL/AC ratio demonstrated the highest area under the curve of 0.817 (95% CI: 0.685-0.949; p < 0.0001). FL/AC ≤0.1550 demonstrated the highest detection rate of 88.2% along with the highest negative predictive value of 75%. CONCLUSION Using a novel, more practical approach to predict lung hypoplasia in skeletal dysplasia, fetal sonographic BPRs and, specifically, FL/AC ratio demonstrate a high detection rate of lung hypoplasia.
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Affiliation(s)
- Eran Ashwal
- Division of Maternal Fetal Medicine, Department of Obstetrics and Gynecology, McMaster University, Hamilton, Ontario, Canada
| | - Jonathan Sgro
- Division of Clinical and Metabolic Genetics, Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - Patrick Shannon
- Department of Pathology and Laboratory Medicine, Mount Sinai Hospital, University of Toronto, Toronto, Ontario, Canada
| | - Karen Chong
- Division of Clinical and Metabolic Genetics, Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
- The Prenatal Diagnosis and Medical Genetics Program, Department of Obstetrics and Gynecology, Mount Sinai Hospital, University of Toronto, Toronto, Ontario, Canada
| | - Phyllis Glanc
- Department of Medical Imaging, The Sunnybrook Health Science Center, University of Toronto, Toronto, Ontario, Canada
| | - David Chitayat
- Division of Clinical and Metabolic Genetics, Department of Pediatrics, The Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
- The Prenatal Diagnosis and Medical Genetics Program, Department of Obstetrics and Gynecology, Mount Sinai Hospital, University of Toronto, Toronto, Ontario, Canada
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Nishimura G, Handa A, Miyazaki O, Tsujioka Y, Murotsuki J, Sawai H, Yamada T, Kozuma Y, Takahashi Y, Ozawa K, Pooh R, Sase M. Prenatal diagnosis of bone dysplasias. Br J Radiol 2023; 96:20221025. [PMID: 37351952 PMCID: PMC10321247 DOI: 10.1259/bjr.20221025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 03/04/2023] [Accepted: 03/21/2023] [Indexed: 06/24/2023] Open
Abstract
Bone dysplasias are individually rare but collectively common. The prenatal diagnosis of bone dysplasias, especially perinatally lethal dysplasias, is of major interest to obstetric services. The current nosology of genetic skeletal disorders addresses over 400 disorders. However, in clinical practice, we encounter only a limited number of disorders, such as FGFR3-related dysplasias, osteogenesis imperfecta, and type II collagenopathies. The recent development of non-invasive prenatal genetic testing using cell-free fetal DNA in maternal blood samples has had a major impact on the prenatal diagnosis of genetic diseases. However, imaging examinations remain critical for the final diagnosis of bone dysplasias because molecular testing only shows genetic variants, and not their pathogenicity - most variants are clinically insignificant. Bone dysplasias are typically suspected when limb shortening is identified by screening ultrasound. Further assessment can be followed by more detailed ultrasound, magnetic resonance imaging (MRI), and CT. Based on these data, rational decision-making is feasible, even when the definitive prenatal diagnosis is not feasible. Here, we highlight key images of common bone dysplasias obtained by currently available modalities.
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Affiliation(s)
- Gen Nishimura
- Japan Forum of Fetal Skeletal Dysplasia, Tokyo, Japan
| | - Atsuhiko Handa
- Department of Radiology, Boston Children’s Hospital, Boston, MA, USA
| | | | - Yuko Tsujioka
- Department of Radiology, Keio University School of Medicine, Tokyo, Japan
| | | | | | | | | | | | | | | | - Masakatsu Sase
- Department of Obstetrics and Gynecology, Yamaguchi Prefectural Grand Medical Center, Yamaguchi, Japan
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Watzenboeck ML, Heidinger BH, Rainer J, Schmidbauer V, Ulm B, Rubesova E, Prayer D, Kasprian G, Prayer F. Reproducibility of 2D versus 3D radiomics for quantitative assessment of fetal lung development: a retrospective fetal MRI study. Insights Imaging 2023; 14:31. [PMID: 36752863 PMCID: PMC9908803 DOI: 10.1186/s13244-023-01376-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Accepted: 01/16/2023] [Indexed: 02/09/2023] Open
Abstract
PURPOSE To investigate the reproducibility of radiomics features extracted from two-dimensional regions of interest (2D ROIs) versus whole lung (3D) ROIs in repeated in-vivo fetal magnetic resonance imaging (MRI) acquisitions. METHODS Thirty fetal MRI scans including two axial T2-weighted acquisitions of the lungs were analysed. 2D (lung at the level of the carina) and 3D (whole lung) ROIs were manually segmented using ITK-Snap. Ninety-five radiomics features were extracted from 2 and 3D ROIs in initial and repeat acquisitions using Pyradiomics. Radiomics feature intra-class correlation coefficients (ICC) were calculated between 2 and 3D ROIs in the initial acquisition, and between 2 and 3D ROIs in repeated acquisitions, respectively. RESULTS MRI data of 11 (36.7%) female and 19 (63.3%) male fetuses acquired at a median 25 + 0 gestational weeks plus days (GW) (interquartile range [IQR] 23 + 4 - 27 + 0 GW) were assessed. Median radiomics feature ICC between 2 and 3D ROIs in the initial MRI acquisition was 0.733 (IQR 0.313-0.814, range 0.018-0.970). ICCs between radiomics features extracted using 3D ROIs in initial and repeat acquisitions (median 0.908 [IQR 0.824-0.929, range 0.335-0.996]) were significantly higher compared to 2D ROIs (0.771 [0.699-0.835, 0.048-0.965]) (p < 0.001). CONCLUSION Fetal MRI radiomics features extracted from 3D whole lung segmentation masks showed significantly higher reproducibility across repeat acquisitions compared to 2D ROIs. Therefore, fetal MRI whole lung radiomics features are robust diagnostic and potentially prognostic tools in the image-based in-vivo quantitative assessment of lung development.
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Affiliation(s)
- Martin L. Watzenboeck
- grid.22937.3d0000 0000 9259 8492Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Währinger Gürtel 18-20, 1090 Vienna, Austria
| | - Benedikt H. Heidinger
- grid.22937.3d0000 0000 9259 8492Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Währinger Gürtel 18-20, 1090 Vienna, Austria
| | - Julian Rainer
- grid.22937.3d0000 0000 9259 8492Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Währinger Gürtel 18-20, 1090 Vienna, Austria
| | - Victor Schmidbauer
- grid.22937.3d0000 0000 9259 8492Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Währinger Gürtel 18-20, 1090 Vienna, Austria
| | - Barbara Ulm
- grid.22937.3d0000 0000 9259 8492Department of Obstetrics and Gynecology, Medical University of Vienna, Spitalgasse 23, Währinger Gürtel 18-20, 1090 Vienna, Austria
| | - Erika Rubesova
- grid.168010.e0000000419368956Department of Pediatric Radiology, Lucile Packard Children’s Hospital at Stanford, Stanford University, 725 Welch Road, Stanford, CA 94305 USA
| | - Daniela Prayer
- Imaging Bellaria, Bellariastrasse 3, 1010 Vienna, Austria
| | - Gregor Kasprian
- grid.22937.3d0000 0000 9259 8492Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Währinger Gürtel 18-20, 1090 Vienna, Austria
| | - Florian Prayer
- Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Währinger Gürtel 18-20, 1090, Vienna, Austria.
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Adaikalam SA, Higano NS, Tkach JA, Yen Lim F, Haberman B, Woods JC, Kingma PS. Neonatal lung growth in congenital diaphragmatic hernia: evaluation of lung density and mass by pulmonary MRI. Pediatr Res 2019; 86:635-640. [PMID: 31238333 DOI: 10.1038/s41390-019-0480-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Revised: 05/23/2019] [Accepted: 06/18/2019] [Indexed: 11/09/2022]
Abstract
BACKGROUND Outcomes of infants with congenital diaphragmatic hernia (CDH) are primarily dependent on the severity of pulmonary hypoplasia. It is previously unknown whether postnatal lung growth in infants with CDH represents true parenchymal lung growth or merely an expansion in volume of the existing tissue. We hypothesized that lung volume growth in CDH infants will be accompanied by an increase in lung mass and that CDH infants will demonstrate accelerated catch-up growth of the more hypoplastic lung. METHODS We used fetal and post-CDH repair MRI of 12 infants to measure lung volume and density, which was used to calculate lung mass. RESULTS The average increase in right lung mass was 1.1 ± 1.1 g/week (p = 0.003) and the average increase in left lung mass was 1.8 ± 0.7 g/week (p < 0.001). When the ratio of left-to-right lung mass of the prenatal MRI was compared to post-repair MRI, the ratio significantly increased in all infants with average prenatal and post-repair ratios of 0.30 and 0.73, respectively (p = 0.002). CONCLUSION Lung growth in infants with CDH is indeed growth in lung mass (i.e. parenchyma), and the lungs demonstrate catch-up growth (i.e., increased rate of growth in the more hypoplastic ipsilateral lung).
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Affiliation(s)
- Stephanie A Adaikalam
- The Perinatal Institute, Section of Neonatology, Perinatal and Pulmonary Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Nara S Higano
- Center for Pulmonary Imaging Research, Division of Pulmonary Medicine and Department of Radiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Jean A Tkach
- Imaging Research Center, Department of Radiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Foong Yen Lim
- Divisions of Pediatric General, Thoracic and Fetal Surgery, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA.,Cincinnati Fetal Center, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Beth Haberman
- The Perinatal Institute, Section of Neonatology, Perinatal and Pulmonary Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA.,Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Jason C Woods
- Center for Pulmonary Imaging Research, Division of Pulmonary Medicine and Department of Radiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA.,Imaging Research Center, Department of Radiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA.,Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Paul S Kingma
- The Perinatal Institute, Section of Neonatology, Perinatal and Pulmonary Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA. .,Cincinnati Fetal Center, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA. .,Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA.
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Schopper MA, Walkup LL, Tkach JA, Higano NS, Lim FY, Haberman B, Woods JC, Kingma PS. Evaluation of Neonatal Lung Volume Growth by Pulmonary Magnetic Resonance Imaging in Patients with Congenital Diaphragmatic Hernia. J Pediatr 2017; 188:96-102.e1. [PMID: 28669608 DOI: 10.1016/j.jpeds.2017.06.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Revised: 04/25/2017] [Accepted: 06/01/2017] [Indexed: 11/27/2022]
Abstract
OBJECTIVE To evaluate postnatal lung volume in infants with congenital diaphragmatic hernia (CDH) and determine if a compensatory increase in lung volume occurs during the postnatal period. STUDY DESIGN Using a novel pulmonary magnetic resonance imaging method for imaging neonatal lungs, the postnatal lung volumes in infants with CDH were determined and compared with prenatal lung volumes obtained via late gestation magnetic resonance imaging. RESULTS Infants with left-sided CDH (2 mild, 9 moderate, and 1 severe) were evaluated. The total lung volume increased in all infants, with the contralateral lung increasing faster than the ipsilateral lung (mean ± SD: 4.9 ± 3.0 mL/week vs 3.4 ± 2.1 mL/week, P = .005). In contrast to prenatal studies, the volume of lungs of infants with more severe CDH grew faster than the lungs of infants with more mild CDH (Spearman's ρ=-0.086, P = .01). Although the contralateral lung volume grew faster in both mild and moderate groups, the majority of total lung volume growth in moderate CDH came from increased volume of the ipsilateral lung (42% of total lung volume increase in the moderate group vs 32% of total lung volume increase in the mild group, P = .09). Analysis of multiple clinical variables suggests that increased weight gain was associated with increased compensatory ipsilateral lung volume growth (ρ = 0.57, P = .05). CONCLUSIONS These results suggest a potential for postnatal catch-up growth in infants with pulmonary hypoplasia and suggest that weight gain may increase the volume growth of the more severely affected lung.
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Affiliation(s)
- Melissa A Schopper
- Section of Neonatology, Perinatal and Pulmonary Biology, The Perinatal Institute, Cincinnati, OH
| | - Laura L Walkup
- Division of Pulmonary Medicine, Department of Radiology, Center for Pulmonary Imaging Research, Cincinnati, OH
| | - Jean A Tkach
- Department of Radiology, Imaging Research Center, Austin, TX
| | - Nara S Higano
- Division of Pulmonary Medicine, Department of Radiology, Center for Pulmonary Imaging Research, Cincinnati, OH; Deparment of Physics, Washington University in St. Louis, St. Louis, MO
| | - Foong Yen Lim
- Cincinnati Fetal Center, Cincinnati, OH; Divisions of Pediatric General, Thoracic and Fetal Surgery, Cincinnati Children's Hospital Medical Center, Cincinnati, OH
| | - Beth Haberman
- Section of Neonatology, Perinatal and Pulmonary Biology, The Perinatal Institute, Cincinnati, OH
| | - Jason C Woods
- Division of Pulmonary Medicine, Department of Radiology, Center for Pulmonary Imaging Research, Cincinnati, OH; Deparment of Physics, Washington University in St. Louis, St. Louis, MO
| | - Paul S Kingma
- Section of Neonatology, Perinatal and Pulmonary Biology, The Perinatal Institute, Cincinnati, OH; Cincinnati Fetal Center, Cincinnati, OH.
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Abstract
Pulmonary hypoplasia, although rare, is associated with significant neonatal morbidity and mortality. Conditions associated with pulmonary hypoplasia include those which limit normal thoracic capacity or movement, including skeletal dysplasias and abdominal wall defects; those with mass effect, including congenital diaphragmatic hernia and pleural effusions; and those with decreased amniotic fluid, including preterm, premature rupture of membranes, and genitourinary anomalies. The ability to predict severe pulmonary hypoplasia prenatally aids in family counseling, as well as obstetric and neonatal management. The objective of this review is to outline the imaging techniques that are widely used prenatally to assess pulmonary hypoplasia and to discuss the limitations of these methods.
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Developmental lung malformations in children: recent advances in imaging techniques, classification system, and imaging findings. J Thorac Imaging 2015; 30:29-43; quiz 44-5. [PMID: 25525781 DOI: 10.1097/rti.0000000000000125] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Congenital lung anomalies represent a diverse group of developmental malformations of the lung parenchyma, arterial supply, and venous drainage, which may present anywhere from the prenatal period through adulthood. It is imperative for radiologists to be aware of imaging techniques and imaging appearance of these anomalies across the pediatric age range. This review presents the spectrum of these lesions that are often encountered in daily clinical practice. Each anomaly is discussed in terms of underlying etiology, clinical presentation, and imaging characterization with emphasis on the most up-to-date research and treatment. Knowledge of these areas is essential for accurate, timely diagnosis, which aids in optimizing patient outcomes.
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Coleman A, Phithakwatchara N, Shaaban A, Keswani S, Kline-Fath B, Kingma P, Haberman B, Lim FY. Fetal lung growth represented by longitudinal changes in MRI-derived fetal lung volume parameters predicts survival in isolated left-sided congenital diaphragmatic hernia. Prenat Diagn 2014; 35:160-6. [DOI: 10.1002/pd.4510] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2014] [Revised: 09/04/2014] [Accepted: 09/26/2014] [Indexed: 11/07/2022]
Affiliation(s)
- Alan Coleman
- Cincinnati Fetal Center; Cincinnati Children's Hospital Medical Center; Cincinnati OH USA
- Division of Pediatric, General and Thoracic Surgery; Cincinnati Children's Hospital Medical Center; Cincinnati OH USA
| | - Nisarat Phithakwatchara
- Cincinnati Fetal Center; Cincinnati Children's Hospital Medical Center; Cincinnati OH USA
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Faculty of Medicine; Siriraj Hospital; Bangkok Thailand
| | - Aimen Shaaban
- Cincinnati Fetal Center; Cincinnati Children's Hospital Medical Center; Cincinnati OH USA
- Division of Pediatric, General and Thoracic Surgery; Cincinnati Children's Hospital Medical Center; Cincinnati OH USA
| | - Sundeep Keswani
- Cincinnati Fetal Center; Cincinnati Children's Hospital Medical Center; Cincinnati OH USA
- Division of Pediatric, General and Thoracic Surgery; Cincinnati Children's Hospital Medical Center; Cincinnati OH USA
| | - Beth Kline-Fath
- Cincinnati Fetal Center; Cincinnati Children's Hospital Medical Center; Cincinnati OH USA
- Division of Pediatric Radiology; Cincinnati Children's Hospital Medical Center; Cincinnati OH USA
| | - Paul Kingma
- Cincinnati Fetal Center; Cincinnati Children's Hospital Medical Center; Cincinnati OH USA
- Division of Neonatology; Cincinnati Children's Hospital Medical Center; Cincinnati OH USA
| | - Beth Haberman
- Division of Neonatology; Cincinnati Children's Hospital Medical Center; Cincinnati OH USA
| | - Foong-Yen Lim
- Cincinnati Fetal Center; Cincinnati Children's Hospital Medical Center; Cincinnati OH USA
- Division of Maternal-Fetal Medicine, Department of Obstetrics and Gynecology, Faculty of Medicine; Siriraj Hospital; Bangkok Thailand
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Oka Y, Rahman M, Sasakura C, Waseda T, Watanabe Y, Fujii R, Makinoda S. Prenatal diagnosis of fetal respiratory function: evaluation of fetal lung maturity using lung-to-liver signal intensity ratio at magnetic resonance imaging. Prenat Diagn 2014; 34:1289-94. [PMID: 25081823 PMCID: PMC4305273 DOI: 10.1002/pd.4469] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2014] [Revised: 07/24/2014] [Accepted: 07/24/2014] [Indexed: 11/20/2022]
Abstract
Objective The purpose of this retrospective study is to determine the fetal lung-to-liver signal intensity ratio (LLSIR) on T2-weighted images for the prediction of neonatal respiratory outcome. Methods One hundred ten fetuses who underwent magnetic resonance imaging (MRI) examination for various indications after 22 weeks of gestation participated in this study. LLSIR was measured as the ratio of signal intensities of the fetal lung and liver on T2-weighted images at MRI. We examined the changes of the ratio with advancing gestation and the relations between LLSIR and the presence of the severe respiratory disorder (SRD) after birth. The best cut-off value of the LLSIR to predict respiratory outcome after birth was calculated using receiver operating characteristic (ROC) curve analysis. Results Lung-to-liver signal intensity ratio correlated significantly with advancing gestational age (R = 0.35, p < 0.001). The non-SRD group had higher LLSIR compared with the SRD group (2.15 ± 0.30 vs. 1.53 ± 0.40, p < 0.001). ROC curve analysis showed that fetuses with an LLSIR < 2.00 were more likely to develop SRD [sensitivity: 100%, 95% confidence interval (CI): 52–100%; specificity: 73%, 95% CI 54–88%]. Conclusion The fetal LLSIR on T2-weighted images is an accurate marker to diagnose the fetal lung maturity. © 2014 The Authors. Prenatal Diagnosis published by John Wiley & Sons, Ltd.
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Affiliation(s)
- Yasuko Oka
- Department of Obstetrics and Gynecology, Kanazawa Medical University, Uchinada, Japan
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11
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Hidaka N, Ishii K, Furutake Y, Yamamoto R, Sasahara J, Mitsuda N. Magnetic resonance fetal right lung volumetry and its efficacy in predicting postnatal short-term outcomes of congenital left-sided diaphragmatic hernia. J Obstet Gynaecol Res 2013; 40:429-38. [PMID: 24147989 DOI: 10.1111/jog.12210] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2013] [Accepted: 06/14/2013] [Indexed: 11/27/2022]
Abstract
AIM We aimed to investigate whether the ratio of magnetic resonance imaging (MRI)-measured right lung volume (RLV) to ultrasonography-estimated bodyweight (RLV/BW) and observed-to-expected (o/e) RLV are of diagnostic value in predicting postnatal outcomes of left congenital diaphragmatic hernia (CDH). MATERIAL AND METHODS We included 32 CDH patients and 34 control subjects. Manually outlined fetal right lung areas on MRI were multiplied by the slice thickness and added to determine the entire volume. The association between RLV and RLV/BW with gestational age in the controls was examined using regression analysis. RLV/BW and o/e RLV were compared between surviving and non-surviving neonates with CDH. RESULTS The expected fetal RLV was derived using the formula RLV (mm(3)) = 1.717 × (gestational weeks)(2.82). In the controls, RLV/BW was nearly constant during the third trimester. The 27 survivors with CDH had a median RLV/BW of 10.7 and a median o/e RLV of 60.0, whereas the five non-surviving neonates had a median RLV/BW of 4.3 and a median o/e RLV of 22.6; the differences were statistically significant. CONCLUSION Assessment of fetal lungs by MRI volumetry is reliable for clinical use. RLV/BW and o/e RLV are potential predictors of postnatal outcomes of left CDH.
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Affiliation(s)
- Nobuhiro Hidaka
- Department of Maternal Fetal Medicine, Osaka Medical Center and Research Institute for Maternal and Child Health, Izumi, Japan
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12
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Gupta S, Singh AH, Shabbir A, Hahn PF, Harris G, Sahani D. Assessing renal parenchymal volume on unenhanced CT as a marker for predicting renal function in patients with chronic kidney disease. Acad Radiol 2012; 19:654-60. [PMID: 22578224 DOI: 10.1016/j.acra.2012.02.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2011] [Revised: 02/10/2012] [Accepted: 02/13/2012] [Indexed: 11/18/2022]
Abstract
OBJECTIVES To estimate renal volume in chronic kidney disease (CKD) patients using a semiautomated software and compare them with split renal function estimates from radionuclide renogram (RR). We proposed that renal volume from unenhanced computed tomography (CT) scans may serve as surrogate marker for assessing renal function in CKD patients. MATERIALS AND METHODS Unenhanced multidetector CT scans of 26 patients with CKD (estimated glomerular filtration rate [eGFR] <60 mL/kg/body surface area [BSA]) and 10 controls (eGFR >60 mL/kg/BSA) were analyzed to calculate renal volumes using a semiautomated software (AMIRAV5.2.0). Volumes obtained were then correlated with corresponding eGFR and split renal function estimates from RR. Volumes were also compared with those obtained on enhanced scans in 10 cases (five disease group, five controls). Bland-Altman analysis was used to assess agreement between methods. RESULTS A moderately positive correlation was found between renal volume obtained on unenhanced CT and eGFR (r = 0.65, P < .0001), whereas a significantly high correlation with split function estimates from RR (r = 0.95, P < .001) was found. Bland-Altman analysis revealed a good agreement between renal volume from CT and renal function from RR (34/36 observations were within 95% CI and there were two outliers). Correlation between volumes obtained from unenhanced and enhanced CT scans was also significant (r = 0.96). CONCLUSION In patients with CKD, renal volume derived from unenhanced CT can possibly serve as a surrogate marker for assessing and monitoring renal function reserves to plan further management.
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Affiliation(s)
- Supriya Gupta
- Department of Abdominal and Interventional Radiology, Massachusetts General Hospital, 55 Fruit Street, White 270, Boston, MA 02114, USA.
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13
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Kline-Fath BM. Current advances in prenatal imaging of congenital diaphragmatic [corrected] hernia. Pediatr Radiol 2012; 42 Suppl 1:S74-90. [PMID: 21739292 DOI: 10.1007/s00247-011-2183-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2011] [Revised: 03/22/2011] [Accepted: 03/31/2011] [Indexed: 11/29/2022]
Abstract
Congenital diaphragmatic hernia, despite advances in therapy, remains a complex condition with significant morbidity and mortality. The etiology of the disorder is still incompletely understood, though the pulmonary hypoplasia and pulmonary hypertension that develop secondarily must be overcome to improve survival. Prenatal US and fetal MRI have helped in the development of a greater understanding of this disease. Also with these modalities, measurement techniques have been developed in an attempt to provide prognosticators for the development of pulmonary hypoplasia and pulmonary hypertension. There is a broad range of approaches for performing these measurements, and variability among imaging centers is noted. Despite inconsistent approaches, these techniques have become the foundation for counseling and prenatal and postnatal therapy. It is hoped that with further research with prenatal US and fetal MRI and the development of innovative medical and surgical therapies that the morbidity and mortality of children with congenital diaphragmatic hernias can be significantly reduced.
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Affiliation(s)
- Beth M Kline-Fath
- Department of Radiology, Fetal Care Center of Cincinnati, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229, USA.
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Castellote A, Mencho S, Carreras E, Higueras T, Cadavid L, Piqueras J, Enriquez G. Correlation between US and MRI for prenatal lung volumetry in diaphragmatic hernia, and use of Doppler to identify the ipsilateral lung cap. Pediatr Radiol 2011; 41:1569-77. [PMID: 21938506 DOI: 10.1007/s00247-011-2200-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2010] [Revised: 03/28/2011] [Accepted: 05/16/2011] [Indexed: 11/27/2022]
Abstract
BACKGROUND Pulmonary hypoplasia is a common cause of neonatal death. OBJECTIVE To describe the correlation between relative fetal lung volume (RFLV) and lung-to-head ratio (LHR) in fetuses with unilateral diaphragmatic hernia. Additionally, to describe identification of the ipsilateral lung cap by power Doppler. MATERIALS AND METHODS Single-institution study of consecutive fetuses with diaphragmatic hernia. LHR (by US) and RFLV (by MRI) were correlated in fetuses with and without an ipsilateral lung cap seen at MRI. In four, color/power Doppler was used to follow the pulmonary artery of the ipsilateral lung to identify the compressed cap. RESULTS The study included 48 fetuses of 20-38 weeks' gestational age (mean, 26 weeks). Mean LHR was 1.52 (range, 0.6-3) in fetuses with a lung cap and 1.15 (range, 0.6-2.58) in fetuses without (P = 0.043). Mean RFLV was 47.4% (range, 18-80%) in fetuses with and 32.9% (range, 14-57%) in fetuses without a lung cap (P = 0.005). RFLV and LHR correlated (r = 0.41, P = 0.01 in those with a cap; r = 0.50, P = 0.05 in those without). Power Doppler identified the ipsilateral lung cap and pulsed Doppler confirmed pulmonary vascularization in four of four fetuses. CONCLUSION LHR underestimates lung volume in fetuses with an ipsilateral lung cap. Power Doppler may be useful for identifying the cap.
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Affiliation(s)
- Amparo Castellote
- Department of Pediatric Radiology, University Children's Hospital Vall d'Hebron, Ps. Vall d'Hebron 119-129, 08035 Barcelona, Spain.
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15
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Messerschmidt A, Pataraia A, Helmer H, Kasprian G, Sauer A, Brugger PC, Pollak A, Weber M, Prayer D. Fetal MRI for prediction of neonatal mortality following preterm premature rupture of the fetal membranes. Pediatr Radiol 2011; 41:1416-20. [PMID: 21909717 DOI: 10.1007/s00247-011-2199-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2010] [Revised: 05/03/2011] [Accepted: 05/23/2011] [Indexed: 12/17/2022]
Abstract
BACKGROUND Lung MRI volumetrics may be valuable for fetal assessment following early preterm premature rupture of the foetal membranes (pPROM). OBJECTIVE To evaluate the predictive value of MRI lung volumetrics after pPROM. MATERIALS AND METHODS Retrospective cohort study of 40 fetuses after pPROM in a large, tertiary, perinatal referral center. Fetuses underwent MRI lung volumetrics. Estimated lung volume was expressed as percentage of expected lung volume (our own normal references). Primary outcome was neonatal mortality due to respiratory distress before discharge from hospital. RESULTS Gestational age range was 16-27 weeks. Estimated-to-expected lung volume was 73% in non-survivors and 102% in survivors (P < 0.05). There were no survivors with a lung volume less than 60% of expected. By logistic regression, mortality could be predicted with a sensitivity of 80%, specificity of 86% and accuracy of 85%. CONCLUSION Fetal MR lung volumetrics may be useful for predicting mortality due to respiratory distress in children with early gestational pPROM.
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Affiliation(s)
- Agnes Messerschmidt
- Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, Vienna, Austria.
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16
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Cassady CI, Mehollin-Ray AR, Olutoye OO, Cass DL. Jugular vein hypoplasia can preclude extracorporeal membrane oxygenation cannulation in the neonate with congenital diaphragmatic hernia: potential identification of the neonate at risk by fetal magnetic resonance imaging. Fetal Diagn Ther 2011; 30:225-8. [PMID: 21968417 DOI: 10.1159/000330783] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2011] [Accepted: 07/09/2011] [Indexed: 11/19/2022]
Abstract
Magnetic resonance imaging (MRI) is used routinely in many fetal care centers for the evaluation of the fetus with congenital diaphragmatic hernia (CDH). Current MRI strategies focus on identifying the type of hernia and its contents, as well as calculating fetal lung volumes, in order to plan appropriately for neonatal support, including the use of extracorporeal membrane oxygenation (ECMO). Single-shot fast spin-echo T(2)-weighted sequences are fundamental, with additional sequences used variably as indicated. We report the case of a fetus with CDH in whom ECMO cannulation was attempted as a neonate but was unsuccessful because of variant anatomy of the internal jugular vein. A retrospective review of gradient echo sequences obtained through the fetal neck and chest showed the abnormality could have been anticipated. During multidisciplinary assessment of the fetus with CDH, consideration should be given to imaging evaluation of the neck to evaluate the cervical vascular anatomy, particularly in cases with poorer prognosis in whom it is anticipated that neonatal ECMO may be an option.
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Bulas D, Egloff AM. Fetal Chest Ultrasound and Magnetic Resonance Imaging: Recent Advances and Current Clinical Applications. Radiol Clin North Am 2011; 49:805-23. [DOI: 10.1016/j.rcl.2011.06.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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18
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Diagnosis of Congenital Diaphragmatic Hernia. ACTA ACUST UNITED AC 2011. [DOI: 10.1007/174_2010_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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Nishie A, Tajima T, Asayama Y, Ishigami K, Hirakawa M, Nakayama T, Ushijima Y, Kakihara D, Okamoto D, Yoshiura T, Masumoto K, Taguchi T, Tsukimori K, Tokunaga S, Irie H, Yoshimitsu K, Honda H. MR prediction of postnatal outcomes in left-sided congenital diaphragmatic hernia using right lung signal intensity: Comparison with that using right lung volume. J Magn Reson Imaging 2009; 30:112-20. [DOI: 10.1002/jmri.21829] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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21
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Abstract
MRI is being increasingly used to assess for fetal abnormalities. Although significant progress in the field of fetal MRI has occurred during the past 20 years, continued technical advances will likely contribute to significant growth of the field. Moreover, with continued hardware and software improvements, additional MRI sequences will likely become available. Prenatal MRI complements ultrasound because of larger field-of-view, superior soft tissue contrast, easier and more precise volumetric measurement, and greater accuracy in the demonstration of intracranial and spinal abnormalities. While ultrasound remains the primary modality for fetal imaging, these advantages of MRI make it a valuable adjunct to fetal surgery. Because fetal MRI involves many disciplines, the future of fetal MR will best be achieved through collaborative efforts.
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Affiliation(s)
- Orit A Glenn
- Department of Radiology, University of California, San Francisco, CA 94143, USA.
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22
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Deprest JA, Gratacos E, Nicolaides K, Done E, Van Mieghem T, Gucciardo L, Claus F, Debeer A, Allegaert K, Reiss I, Tibboel D. Changing perspectives on the perinatal management of isolated congenital diaphragmatic hernia in Europe. Clin Perinatol 2009; 36:329-47, ix. [PMID: 19559323 DOI: 10.1016/j.clp.2009.03.004] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Congenital diaphragmatic hernia (CDH) should be diagnosed in the prenatal period and prompt referral to a tertiary referral center for imaging, genetic testing, and multidisciplinary counseling. Individual prediction of prognosis is based on the absence of additional anomalies, lung size, and liver herniation. In severe cases, a prenatal endotracheal balloon procedure is currently being offered at specialized centers. Fetal intervention is now also offered to milder cases within a trial, hypothesizing that this may reduce the occurrence of bronchopulmonary dysplasia in survivors. Postnatal management has been standardized by European high-volume centers for the purpose of this and other trials.
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Affiliation(s)
- Jan A Deprest
- Woman and Child Division, Fetal Medicine Unit, University Hospital Gasthuisberg, Leuven, Belgium.
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Deprest JA, Flemmer AW, Gratacos E, Nicolaides K. Antenatal prediction of lung volume and in-utero treatment by fetal endoscopic tracheal occlusion in severe isolated congenital diaphragmatic hernia. Semin Fetal Neonatal Med 2009; 14:8-13. [PMID: 18845492 DOI: 10.1016/j.siny.2008.08.010] [Citation(s) in RCA: 94] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Congenital diaphragmatic hernia (CDH) is a severe malformation with an overall survival between 30% and 90%. Survival in the presence of associated malformations is very low. The condition should be detected in ultrasound screening programmes, but whether and how prenatal imaging can accurately predict outcome remains a matter of debate. Predictions based on the lung area:head circumference ratio and liver position are best studied. This information is highly relevant in counselling patients, leaving to severe cases the option of termination of pregnancy as experimental prenatal intervention aiming to reverse pulmonary hypoplasia. The purpose of this review is to update current knowledge regarding predictive value of prenatal assessment in terms of neonatal survival. We will also discuss experimental evidence and clinical data regarding fetal tracheal occlusion.
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Affiliation(s)
- Jan A Deprest
- Center for Surgical Technologies, Faculty of Medicine, Katholieke Universiteit Leuven, Minderbroedersstraat 17, B-3000 Leuven, Belgium
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Doné E, Gucciardo L, Van Mieghem T, Jani J, Cannie M, Van Schoubroeck D, Devlieger R, Catte LD, Klaritsch P, Mayer S, Beck V, Debeer A, Gratacos E, Nicolaides K, Deprest J. Prenatal diagnosis, prediction of outcome and in utero therapy of isolated congenital diaphragmatic hernia. Prenat Diagn 2008; 28:581-91. [PMID: 18634116 DOI: 10.1002/pd.2033] [Citation(s) in RCA: 63] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Congenital diaphragmatic hernia (CDH) can be associated with genetic or structural anomalies with poor prognosis. In isolated cases, survival is dependent on the degree of lung hypoplasia and liver position. Cases should be referred in utero to tertiary care centers familiar with this condition both for prediction of outcome as well as timed delivery. The best validated prognostic indicator is the lung area to head circumference ratio. Ultrasound is used to measure the lung area of the index case, which is then expressed as a proportion of what is expected normally (observed/expected LHR). When O/E LHR is < 25% survival chances are < 15%. Prenatal intervention, aiming to stimulate lung growth, can be achieved by temporary fetal endoscopic tracheal occlusion (FETO). A balloon is percutaneously inserted into the trachea at 26-28 weeks, and reversal of occlusion is planned at 34 weeks. Growing experience has demonstrated the feasibility and safety of the technique with a survival rate of about 50%. The lung response to, and outcome after FETO, is dependent on pre-existing lung size as well gestational age at birth. Early data show that FETO does not increase morbidity in survivors, when compared to historical controls. Several trials are currently under design.
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Affiliation(s)
- Elisa Doné
- Fetal Medicine Unit of University Hospitals Leuven, Leuven, Belgium
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Prédiction anténatale de l’hypoplasie pulmonaire et traitement in-utero par occlusion trachéale fœtale endoscopique (FETO) dans la hernie diaphragmatique congénitale isolée sévère. BULLETIN DE L'ACADÉMIE NATIONALE DE MÉDECINE 2008. [DOI: 10.1016/s0001-4079(19)32665-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Jani J, Cannie M, Sonigo P, Robert Y, Moreno O, Benachi A, Vaast P, Gratacos E, Nicolaides KH, Deprest J. Value of prenatal magnetic resonance imaging in the prediction of postnatal outcome in fetuses with diaphragmatic hernia. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2008; 32:793-799. [PMID: 18956430 DOI: 10.1002/uog.6234] [Citation(s) in RCA: 119] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
OBJECTIVES To investigate the potential value of antenatally determined total fetal lung volume (TFLV) by magnetic resonance imaging (MRI) in the prediction of the postnatal survival in congenital diaphragmatic hernia (CDH). METHODS We examined fetuses with isolated CDH, in which MRI was used at 22-38 weeks of gestation to measure TFLV and assess intrathoracic herniation of abdominal viscera, that were liveborn after 30 weeks of gestation and had postnatal follow-up until death or discharge from hospital. Regression analysis was used to investigate the effect on survival of gestational age at diagnosis, observed to expected (o/e) TFLV, intrathoracic herniation of the liver, side of CDH, gestational age at MRI, institution, year and gestational age at delivery. In 76 fetuses measurements of o/e TFLV and the lung area to head circumference ratio (LHR) were performed within 2 weeks of each other; in these cases o/e TFLV and o/e LHR were compared for their prediction of postnatal survival. RESULTS In the 148 cases that fulfilled the entry criteria, multiple regression analysis demonstrated that significant predictors of survival were the presence or absence of intrathoracic herniation of the liver and o/e TFLV. The area under the receiver-operating characteristics curves for prediction of postnatal survival from o/e TFLV was 0.786 (standard error, 0.059; P < 0.001) and that from o/e LHR was 0.743 (standard error, 0.069; P = 0.001). CONCLUSIONS In the assessment of fetuses with CDH, MRI-based o/e TFLV is useful in the prediction of postnatal survival.
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Affiliation(s)
- J Jani
- Radiology and Fetal Medicine Unit of King's College Hospital, London, UK.
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27
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Cannie M, Jani J, Meersschaert J, Allegaert K, Done' E, Marchal G, Deprest J, Dymarkowski S. Prenatal prediction of survival in isolated diaphragmatic hernia using observed to expected total fetal lung volume determined by magnetic resonance imaging based on either gestational age or fetal body volume. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2008; 32:633-639. [PMID: 18792417 DOI: 10.1002/uog.6139] [Citation(s) in RCA: 71] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
OBJECTIVES To compare the predictive value of the prenatal observed to expected (o/e) lung volume as measured by fetal magnetic resonance imaging (MRI), based on an algorithm using either the gestational age or fetal body volume (FBV), for neonatal survival of fetuses with isolated congenital diaphragmatic hernia (CDH). METHODS We included 53 fetuses with a prenatal diagnosis of isolated CDH, 26 without and 27 with prenatal tracheal occlusion, who were assessed by fetal MRI, liveborn after 32 weeks, and in whom follow-up until discharge from the neonatal care unit was available. Measurements of lung volumes were expressed as a percentage of the appropriate mean (o/e total fetal lung volume (TFLV) x 100) either for gestational age or for FBV. Measurements of FBV were expressed as a percentage of the appropriate mean (o/e FBV x 100) for gestation. Fetuses with prenatal intervention were all assessed > or = 24 h after balloon removal. Regression analysis was used to examine the effect on postnatal survival of either o/e TFLV based on gestational age or based on FBV, gestation at delivery, side of CDH, intrathoracic position of the liver and prenatal intervention. Receiver-operating characteristics (ROC) curves were constructed for the prediction of survival by o/e TFLV based on gestational age and o/e TFLV based on FBV, for all fetuses, as well as for those with o/e FBV between 90 and 110% and those with values beyond that range. A power calculation for the number of fetuses needed to show a difference between the ROC curves was performed. RESULTS Regression analysis demonstrated that o/e TFLV based on gestational age and on FBV were the only independent predictors of postnatal survival. The area under the ROC curve for prediction of postnatal survival from the o/e TFLV based on gestational age was 0.811, and for that based on FBV it was 0.868 (P < 0.001 for both). For fetuses with o/e FBV between 90 and 110%, and those with values < 90% and > 110%, the area for measurements based on gestational age was 0.895 and 0.733, respectively; when based on FBV it was 0.906 and 0.833 (P < 0.01 for all). A minimum of 273 patients would be needed to provide a probability of 90% of detecting a difference between the areas under both ROC curves. CONCLUSIONS In fetuses with isolated CDH, lung volume as measured by fetal MRI was significantly correlated with survival. Prediction tended to be better by o/e TFLV based on FBV rather than gestational age. The difference in the prediction of survival between o/e TFLV based on FBV or gestational age was dependent on fetal biometry.
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Affiliation(s)
- M Cannie
- Department of Radiology, University Hospital Gasthuisberg, Leuven, Belgium
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Manganaro L, Perrone A, Sassi S, Fierro F, Savelli S, Di Maurizio M, Tomei A, Francioso A, La Barbera L, Giancotti A, Ballesio L. Diffusion-weighted MR imaging and apparent diffusion coefficient of the normal fetal lung: preliminary experience. Prenat Diagn 2008; 28:745-8. [DOI: 10.1002/pd.2041] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Büsing KA, Kilian AK, Schaible T, Dinter DJ, Neff KW. MR lung volume in fetal congenital diaphragmatic hernia: logistic regression analysis--mortality and extracorporeal membrane oxygenation. Radiology 2008; 248:233-9. [PMID: 18566175 DOI: 10.1148/radiol.2481070934] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
PURPOSE To prospectively assess the results of logistic regression analysis that were based on magnetic resonance (MR) image fetal lung volume (FLV) measurements to predict survival and the corresponding need for extracorporeal membrane oxygenation (ECMO) therapy in fetuses with congenital diaphragmatic hernia (CDH) before and after 30 weeks gestation. MATERIALS AND METHODS Written informed consent was obtained and the study was approved by the local research ethics committee. FLV was measured on MR images in 95 fetuses (52 female neonates, 43 male neonates) with CDH between 22 and 39 weeks gestation by using multiplanar T2-weighted half-Fourier acquired single-shot turbo spin-echo MR imaging. On the basis of logistic regression analysis results, mortality and the need for ECMO therapy were calculated for fetuses before and after 30 weeks gestation. RESULTS Overall, higher FLV was associated with improved survival (P < .001) and decreasing probability of need for ECMO therapy (P = .008). Survival at discharge was 29.2% in neonates with an FLV of 5 mL, compared with 99.7% in neonates with an FLV of 25 mL. The corresponding need for ECMO therapy was 56.1% in fetuses with an FLV of 5 mL and 8.7% in fetuses with an FLV of 40 mL. Prognostic power was considerably lower before 30 weeks gestation. CONCLUSION Beyond 30 weeks gestation, logistic regression analysis that is based on MR FLV measurements is useful to estimate neonatal survival rates and ECMO requirements. Prior to 30 weeks gestation, the method is not reliable and the FLV measurement should be repeated, particularly in fetuses with small lung volumes, before a decision is made about therapeutic options.
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Affiliation(s)
- Karen A Büsing
- Department of Clinical Radiology, University Hospital Mannheim, University of Heidelberg, Theodor Kutzer Ufer 1-3, 68167 Mannheim, Germany.
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Büsing KA, Kilian AK, Schaible T, Endler C, Schaffelder R, Neff KW. MR Relative Fetal Lung Volume in Congenital Diaphragmatic Hernia: Survival and Need for Extracorporeal Membrane Oxygenation. Radiology 2008; 248:240-6. [DOI: 10.1148/radiol.2481070952] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Cannie MM, Jani JC, Van Kerkhove F, Meerschaert J, De Keyzer F, Lewi L, Deprest JA, Dymarkowski S. Fetal Body Volume at MR Imaging to Quantify Total Fetal Lung Volume: Normal Ranges. Radiology 2008; 247:197-203. [DOI: 10.1148/radiol.2471070682] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Gucciardo L, Deprest J, Done' E, Van Mieghem T, Van de Velde M, Gratacos E, Jani J, Peralta F, Nicolaides K. Prediction of outcome in isolated congenital diaphragmatic hernia and its consequences for fetal therapy. Best Pract Res Clin Obstet Gynaecol 2008; 22:123-38. [DOI: 10.1016/j.bpobgyn.2007.08.006] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Büsing KA, Kilian AK, Schaible T, Debus A, Weiss C, Neff KW. Reliability and Validity of MR Image Lung Volume Measurement in Fetuses with Congenital Diaphragmatic Hernia and in Vitro Lung Models. Radiology 2008; 246:553-61. [DOI: 10.1148/radiol.2462062166] [Citation(s) in RCA: 103] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Obenauer S, Maestre LA. Fetal MRI of lung hypoplasia: imaging findings. Clin Imaging 2008; 32:48-50. [DOI: 10.1016/j.clinimag.2007.08.019] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2007] [Accepted: 08/01/2007] [Indexed: 10/22/2022]
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Jani J, Cannie M, Done E, Van Mieghem T, Van Schoubroeck D, Gucciardo L, Dymarkowski S, Deprest JA. Relationship between lung area at ultrasound examination and lung volume assessment with magnetic resonance imaging in isolated congenital diaphragmatic hernia. ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2007; 30:855-860. [PMID: 17932997 DOI: 10.1002/uog.5168] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
OBJECTIVES To prospectively examine the relationship between contralateral lung area measured by two-dimensional (2D) ultrasound examination and contralateral and total fetal lung volume (FLV) estimated by magnetic resonance imaging (MRI) in the assessment of fetuses with congenital diaphragmatic hernia (CDH). METHODS Sixty-six fetuses with isolated CDH were entered in this prospective study. Contralateral fetal lung area was measured by 2D ultrasonography using the longest axis method. Ipsilateral, contralateral and total FLV were measured using multiplanar axial T2-weighted MRI. Regression analysis was used to determine the significance of associations between contralateral lung area and contralateral and total FLV, and the predicted total FLV was subsequently calculated using the regression equation. Univariate regression analysis was used to investigate the effect on the proportionate difference between the predicted and the observed total FLV of gestational age, proportionate volume of ipsilateral vs. total FLV, side of CDH, intrathoracic herniation of the liver and intratracheal presence of a balloon. RESULTS The 66 fetuses underwent a total of 191 paired 2D ultrasound and MRI examinations at a median gestational age of 30 (range, 18-38) weeks. It was possible to visualize and measure the contralateral lung area by 2D ultrasound, as well as both the ipsilateral and contralateral lung volumes by MRI, in all instances. There was a significant association between contralateral lung area and contralateral lung volume (r = 0.86; P < 0.001) and with total FLV (r = 0.84; P < 0.001). Univariate regression analysis showed that the proportionate difference between the predicted and the observed total FLV was significantly associated with the proportionate volume of ipsilateral vs. total FLV but not with gestational age, side of CDH, intrathoracic herniation of the liver or intratracheal presence of the balloon. CONCLUSIONS In CDH, contralateral lung area measurement by 2D ultrasound correlates well with the total FLV estimated by MRI, irrespective of gestational age, liver herniation or side of herniation. Inconsistencies between the two measurements are attributable to the contribution of the ipsilateral lung to the total lung volume.
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Affiliation(s)
- J Jani
- Unit of Prenatal and Gynecological Ultrasound and Fetal Therapy, Department of Obstetrics and Gynecology, University Hospital Gasthuisberg, Leuven, Belgium
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Gorincour G, Eurin D, Avni FE. Prenatal prediction of pulmonary hypoplasia: US and MR imaging working together. Radiology 2007; 245:608-9; author reply 609. [PMID: 17940315 DOI: 10.1148/radiol.2452062140] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Balassy C, Kasprian G, Brugger PC, Csapo B, Weber M, Hörmann M, Bankier A, Bammer R, Herold CJ, Prayer D. Diffusion-weighted MR imaging of the normal fetal lung. Eur Radiol 2007; 18:700-6. [DOI: 10.1007/s00330-007-0784-x] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2007] [Revised: 07/30/2007] [Accepted: 09/07/2007] [Indexed: 10/22/2022]
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Jani JC, Cannie M, Peralta CFA, Deprest JA, Nicolaides KH, Dymarkowski S. Lung Volumes in Fetuses with Congenital Diaphragmatic Hernia: Comparison of 3D US and MR Imaging Assessments. Radiology 2007; 244:575-82. [PMID: 17641375 DOI: 10.1148/radiol.2442061158] [Citation(s) in RCA: 106] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
PURPOSE To prospectively compare three-dimensional (3D) ultrasonography (US) and magnetic resonance (MR) imaging in the assessment of lung volumes in fetuses with congenital diaphragmatic hernia. MATERIALS AND METHODS Informed consent was obtained for this ethics committee-approved study. Left and right lung volumes were measured by using the 30 degrees virtual organ computer-aided analysis 3D US technique and a transverse multiplanar T2-weighted MR imaging technique in 43 fetuses with isolated congenital diaphragmatic hernia. Regression analysis was used to determine the significance of the association between the two methods. RESULTS The 43 fetuses were assessed in a total of 78 examinations. Median gestational age at the examinations was 28 weeks (range, 18-38 weeks). In all examinations, it was possible to visualize and measure both the ipsilateral and the contralateral lungs with MR imaging. In contrast, with 3D US, the contralateral lung could be measured in all examinations, but the ipsilateral lung could be measured in only 44 (56%) examinations. For the contralateral lungs, there was a significant association between 3D US and MR imaging measurements (r = 0.86, P < .001). Although the mean lung volume measured with 3D US was 25% lower than that measured with MR imaging, the ratio of observed volume to expected normal mean volume for gestation was not significantly different between the two methods (3D US, 0.48; MR imaging, 0.52). In the 44 examinations in which the ipsilateral lung could be measured with both methods, 3D US volumes were not significantly different from MR imaging volumes, and the association was weaker (r = 0.39, P < .05) in the ipsilateral lungs than in the contralateral lungs. CONCLUSION For congenital diaphragmatic hernia, 3D US provides a reliable measurement of the contralateral but not the ipsilateral lung.
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Affiliation(s)
- Jacques C Jani
- Unit of Prenatal and Gynaecological Ultrasound and Fetal Therapy, Department of Obstetrics and Gynaecology, University Hospital Gasthuisberg, 3000 Leuven, Belgium
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Kazan-Tannus JF, Dialani V, Chiang G, Feldman HA, Brown J, Levine D. MR volumetry of brain and CSF in fetuses referred for ventriculomegaly. AJR Am J Roentgenol 2007; 189:145-51. [PMID: 17579164 PMCID: PMC1995423 DOI: 10.2214/ajr.07.2073] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
OBJECTIVE The purpose of this study was to validate the method of performing fetal brain volumetry. In particular, our objectives were to assess which imaging plane is most reproducible for the performance of brain volumetry measurements and to ascertain inter- and intraobserver variability in determining brain volume in fetuses referred for ventriculomegaly (VM). SUBJECTS AND METHODS In this prospective study, 50 consecutive fetuses at 17-37 weeks of gestational age referred for MRI for VM underwent fast spin-echo T2-weighted imaging. Supratentorial brain parenchyma, lateral ventricles, and extraaxial and cerebellar volumetric measurements were manually obtained in three planes by three radiologists. Inter- and intraobserver variability were assessed. The relationship between volumes and gestational age, and lateral ventricular diameter were assessed. RESULTS Volumes increased with gestational age. The presence of VM correlated with increased lateral ventricle diameter. The effect of imaging plane was negligible. Inter- and intraobserver variability were low. CONCLUSION Supratentorial parenchyma and lateral ventricular volumes can be reliably measured on fetal MRI, and imaging plane was not an important factor in measurement. Further studies are needed to correlate these indexes with long-term postnatal outcomes.
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Affiliation(s)
| | - Vandana Dialani
- Department of Radiology, Beth Israel Deaconess Medical Center, 330 Brookline Avenue
| | - Gloria Chiang
- Harvard Medical School, 25 Shattuck Street, Boston, MA 02115
| | - Henry A. Feldman
- Clinical Research Program, Children's Hospital Boston, 300 Longwood Avenue, Boston, MA 02115
| | - Jeff Brown
- Pharmacoepidemiology Group, Harvard Pilgrim Health Care, 133 Brookline Avenue, 6th Floor, Boston, MA 02215
| | - Deborah Levine
- Department of Radiology, Beth Israel Deaconess Medical Center, 330 Brookline Avenue
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Abstract
PURPOSE OF REVIEW Fetal magnetic resonance imaging is becoming more used in the evaluation of complex fetal abnormalities. Rapid advances in the technology and application of fetal magnetic resonance imaging necessitate a review of this subject. RECENT FINDINGS Diffusion-weighted imaging, magnetic resonance spectroscopy and functional magnetic resonance imaging may allow assessment of fetal brain even before anatomical abnormalities are demonstrated. We discuss the uses of fetal magnetic resonance imaging in better assessment of pulmonary hypoplasia, congenital diaphragmatic hernia and renal anomalies. SUMMARY The additional information from fetal magnetic resonance imaging, beyond that obtained by ultrasound, is invaluable in prenatal counseling, delivery planning and planning for pre- or postnatal intervention. As intrauterine and neonatal surgery evolve, so will the utilization of fetal magnetic resonance imaging.
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Affiliation(s)
- Kumaresan Sandrasegaran
- Department of Radiology, Indiana University School of Medicine, Indianapolis, Indiana 46202, USA.
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Abstract
Ultrasonography is the screening method of choice for the evaluation of the fetus. It is safe, inexpensive, and easily performed. However, it is operator dependent, and evaluation may be limited because of fetal position, maternal obesity, overlying bone, and/or oligohydramnios. Magnetic resonance imaging is an alternative modality that uses no ionizing radiation, has excellent tissue contrast and a large field of view, is not limited by obesity or overlying bone, and can image the fetus in multiple planes, no matter the fetal lie. Faster scanning techniques allow studies to be performed without sedation in the second and third trimester with minimal motion artifact.
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Affiliation(s)
- Dorothy Bulas
- Department of Diagnostic Imaging and Radiology, Children's National Medical Center, George Washington University School of Medicine, Washington, DC 20010, USA.
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Takada K, Hamada Y, Watanabe K, Tanano A, Tokuhara K, Sato M, Kamiyama Y. Antenatal magnetic resonance imaging is useful in providing predictive values for surgical procedures in abdominal wall defects. J Pediatr Surg 2006; 41:1962-6. [PMID: 17161182 DOI: 10.1016/j.jpedsurg.2006.08.017] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
BACKGROUND Antenatal magnetic resonance imaging (MRI) is useful for the diagnosis of abdominal wall defects. Its predictive value concerning the possibility of primary closure of the abdominal wall, however, has so far not been reported. METHODS Between August 2001 and November 2004, antenatal MRI was performed on 9 patients with abdominal wall defects in whom surgical repair was performed immediately after birth. Areas of the abdominal cavity and exteriorized viscera were manually traced from both sagittal and axial MR images, and the data were further transmitted to a Workstation for MRI Volumetry (Advantage Windows 4.1, General Electric Medical Systems, Milwaukee, Wis). We examined the exteriorized ratio (ER), which is calculated by dividing the absolute volume of the abdominal cavity by that of the exteriorized viscera, and evaluated the predictive value by a retrospective comparison with surgical procedure. RESULTS In the primary closure group (n = 5), mean values of ER were 0.33 +/- 0.31 from axial and 0.45 +/- 0.31 from sagittal MR images. In contrast, in the staged closure group (n = 4), mean values of ER were 1.39 +/- 0.40 from axial and 1.34 +/- 0.42 from sagittal MR images. There was a significant difference (P < .05) between the 2 groups for both sets of images. The ER obtained from antenatal MRI correlated well with surgical procedure. CONCLUSIONS The ER might be useful for antenatal counseling, planning for delivery, and prediction of the most likely surgical procedure.
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Affiliation(s)
- Kohei Takada
- Division of Pediatric Surgery, Kansai Medical University, Hirakata City, Osaka 573-1192, Japan.
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Abstract
Ultrasonography is the primary prenatal screening modality used in the evaluation of the fetus and the maternal pelvis. However, fetal MR imaging plays a complementary role to prenatal ultrasound in the evaluation of the fetus with suspected abnormalities. MR imaging's role includes confirming or excluding possible lesions, defining their full extent, aiding in their characterization, and demonstrating other associated abnormalities. As newer techniques such as diffusion imaging, MR spectroscopy, and functional studies are used more widely, it is hoped that additional information will be made available by this modality to physicians evaluating and taking care of fetuses.
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Affiliation(s)
- Rosalind B Dietrich
- Department of Radiology, University of California, San Diego Medical Center, 200 West Arbor Drive, San Diego, CA 92103, USA.
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Balassy C, Kasprian G, Brugger PC, Weber M, Csapo B, Mittermayer C, Hörmann M, Prayer D. MRI investigation of normal fetal lung maturation using signal intensities on different imaging sequences. Eur Radiol 2006; 17:835-42. [PMID: 17180330 DOI: 10.1007/s00330-006-0409-9] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2006] [Revised: 05/24/2006] [Accepted: 07/20/2006] [Indexed: 11/29/2022]
Abstract
To purpose of this paper is to study the relation between normal lung maturation signal and changes in intensity ratios (SIR) and to determine which magnetic resonance imaging sequence provides the strongest correlation of normal lung SIs with gestational age. 126 normal singleton pregnancies (20-37 weeks) were examined with a 1.5 Tesla unit. Mean SIs for lungs, liver, and gastric fluid were assessed on six different sequences, and SIRs of lung/liver (LLSIR) and lung/gastric fluid (LGSIR) were correlated with gestational age for each sequence. To evaluate the feasibility of SIRs in the prediction of the state of the lung maturity, accuracy of the predicted SIRs (D*) was measured by calculating relative residuals (D*-D)/D for each sequence. LLSIRs showed significant changes in every sequence (p<0.05), while LGSIRs only on two sequences. Significant differences were shown for the mean of absolute residuals for both LLSIRs (p<0.001) and for LGSIRs (p=0.003). Relative residuals of LLSIRs were significantly smaller on T1-weighted sequence, whereas they were significantly higher for LGSIRs on FLAIR sequence. Fetal liver seems to be adequate reference for the investigation of lung maturation. T1-weighted sequence was the most accurate for the measurement of the lung SIs; thus, we propose to determine LLSIR on T1-weighted sequence when evaluating lung development.
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Affiliation(s)
- Csilla Balassy
- Department of Radiology, Medical University of Vienna, Waehringer Guertel 18-20, 1090, Vienna, Austria.
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Deprest J, Jani J, Cannie M, Debeer A, Vandevelde M, Done E, Gratacos E, Nicolaïdes K. Prenatal intervention for isolated congenital diaphragmatic hernia. Curr Opin Obstet Gynecol 2006; 18:355-67. [PMID: 16735838 DOI: 10.1097/01.gco.0000193000.12416.80] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
PURPOSE OF REVIEW We aim to review the recent literature regarding early prenatal prediction of outcome in babies diagnosed with isolated congenital diaphragmatic hernia, as well as results of fetal therapy for this condition. RECENT FINDINGS Current survival rates in population-based studies are around 55-70%. Highly specialized centers report 80% and more, but discount the hidden mortality, mainly in the antenatal period. Fetuses presenting with liver herniation and a lung-to-head ratio of less than 1.0 measured in midgestation have a poor prognosis. Other volumetric techniques are being evaluated for use in midtrimester. Recently, a randomized trial failed to show benefit from prenatal therapy, but lacked power to document the potential advantage of prenatal therapy in severe cases. We proposed percutaneous fetal endoluminal tracheal occlusion with a balloon at 26-28 weeks through a 3.3 mm incision. In severe cases, fetal endoluminal tracheal occlusion increased lung size as well as survival, with an early (7 day) survival, late neonatal (28 day) survival and survival at discharge of 75, 58 and 50%, respectively, comparing favorably with 9% in contemporary controls. Airways can be restored prior to birth improving neonatal survival (83.3% compared with 33.3%). The procedure carries a risk for preterm prelabour rupture of the fetal membranes, although that may decrease with experience. SUMMARY Fetuses with severe congenital diaphragmatic hernia can be identified in the second trimester. Fetal endoluminal tracheal occlusion can be considered as a minimally invasive fetal therapy, improving outcome in such highly selected cases.
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Affiliation(s)
- Jan Deprest
- Fetal Medicine Unit, Department of Obstetrics and Gynaecology, University Hospital Gasthuisberg, Leuven, Belgium.
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Ward VL, Nishino M, Hatabu H, Estroff JA, Barnewolt CE, Feldman HA, Levine D. Fetal Lung Volume Measurements: Determination with MR Imaging—Effect of Various Factors. Radiology 2006; 240:187-93. [PMID: 16793978 DOI: 10.1148/radiol.2393050583] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
PURPOSE To retrospectively determine the effect of gestational age (GA), imaging plane, section thickness, and inter- and intraobserver variability on fetal lung volume (FLV) measurements obtained with magnetic resonance (MR) imaging in a cohort of fetuses without thoracic abnormalities. MATERIALS AND METHODS Institutional review board approval was obtained. Informed consent for this retrospective cohort study was waived, and the conduct of this study was HIPAA compliant. FLV was measured in 30 fetuses (GA, 17-36 weeks) referred for MR imaging for indications other than pulmonary abnormalities. Measurements were made on single-shot fast spin-echo images by tracing free-form regions of interest on individual consecutive sections in the transverse, sagittal, and coronal planes. Measurements were performed twice by two observers independently. Correlations between FLV and GA, imaging plane, and section thickness were assessed, as were intra- and interobserver variability. Time to perform FLV was assessed in a subset of fetuses. RESULTS Total FLV ranged from 2 to 110 mL. Mixed-effects regression model showed significant quadratic trend in FLV with increasing GA, with comparable strength of correlation (r = 0.89-0.91) in the three imaging planes of measurement. Intraobserver agreement was good in all three planes (r = 0.65-0.83) and was highest in the transverse plane. Interobserver agreement was good in all three planes (r = 0.68-0.76). FLV showed no significant dependence on section thickness (P = .23) or imaging plane (P = .82). Mean time to obtain FLV measurements ranged from 48 seconds at GA of 21 weeks to 77 seconds at GA of 29-30 weeks. CONCLUSION GA-based FLV measurements obtained with MR images are independent of section thickness and imaging plane and can be performed with good inter- and intraobserver agreement in less than 2 minutes.
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Affiliation(s)
- Valerie L Ward
- Department of Radiology, Children's Hospital, Harvard Medical School, 300 Longwood Ave, Boston, MA 02115, USA.
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47
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Cannie M, Jani J, Dymarkowski S, Deprest J. Fetal magnetic resonance imaging: luxury or necessity? ULTRASOUND IN OBSTETRICS & GYNECOLOGY : THE OFFICIAL JOURNAL OF THE INTERNATIONAL SOCIETY OF ULTRASOUND IN OBSTETRICS AND GYNECOLOGY 2006; 27:471-6. [PMID: 16619388 DOI: 10.1002/uog.2776] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
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Peralta CFA, Kazan-Tannus JF, Bunduki V, Santos EM, de Castro CC, Cerri GG, Zugaib M. Evaluation of the agreement between 3-dimensional ultrasonography and magnetic resonance imaging for fetal lung volume measurement. JOURNAL OF ULTRASOUND IN MEDICINE : OFFICIAL JOURNAL OF THE AMERICAN INSTITUTE OF ULTRASOUND IN MEDICINE 2006; 25:461-7. [PMID: 16567435 DOI: 10.7863/jum.2006.25.4.461] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
OBJECTIVE The purpose of this study was to assess the agreement between 3-dimensional ultrasonography (3DUS) and magnetic resonance imaging (MRI) for lung volumetry in fetuses with and without abnormalities associated with lung hypoplasia. METHODS Fifty-nine singleton pregnancies were evaluated. Cases were separated into groups 1 and 2, according to the presence or absence of malformations associated with lung hypoplasia, respectively. Fetal lung volume was calculated by the Virtual Organ Computer-Aided Analysis (VOCAL) program of the 3DUS and the MRI. In both groups, measurements performed with all VOCAL angles were compared among themselves and with those obtained by MRI. Bland-Altman tests and analysis of variance were used for this purpose. RESULTS In groups 1 and 2, the mean lung volume obtained with each rotation angle of the VOCAL technique was significantly smaller than the mean volume calculated by MRI (P < .001), and the mean volume obtained with the 30 degrees rotation step was significantly smaller than those obtained with the other rotation steps of the VOCAL technique. Bland-Altman tests confirmed this underestimation and showed a broad 95% confidence interval when the VOCAL angles were compared with those of MRI and when the 30 degrees rotation step was compared with the other VOCAL steps. CONCLUSIONS There was a substantial discrepancy between 3DUS and MRI and between the 30 degrees rotation step of the VOCAL technique and the other rotation angles, for lung volume measurement in fetuses with and without abnormalities associated with lung hypoplasia.
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Kasprian G, Balassy C, Brugger PC, Prayer D. MRI of normal and pathological fetal lung development. Eur J Radiol 2006; 57:261-70. [PMID: 16413987 DOI: 10.1016/j.ejrad.2005.11.031] [Citation(s) in RCA: 85] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2005] [Revised: 11/14/2005] [Accepted: 11/16/2005] [Indexed: 10/25/2022]
Abstract
Normal fetal lung development is a complex process influenced by mechanical and many biochemical factors. In addition to ultrasound, fetal magnetic resonance imaging (MRI) constitutes a new method to investigate this process in vivo during the second and third trimester. The techniques of MRI volumetry, assessment of signal intensities, and MRI spectroscopy of the fetal lung have been used to analyze this process and have already been applied clinically to identify abnormal fetal lung growth. Particularly in conditions such as oligohydramnios and congenital diaphragmatic hernia (CDH), pulmonary hypoplasia may be the cause of neonatal death. A precise diagnosis and quantification of compromised fetal lung development may improve post- and perinatal management. The main events in fetal lung development are reviewed and MR volumetric data from 106 normal fetuses, as well as different examples of pathological lung growth, are provided.
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Affiliation(s)
- Gregor Kasprian
- University Clinic of Radiodiagnostics, Medical University of Vienna, Allgemeines Krankenhaus, AKH, Wien, Währinger Gürtel 18-20, 1090 Vienna, Austria.
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Brugger PC, Prayer D. Fetal abdominal magnetic resonance imaging. Eur J Radiol 2006; 57:278-93. [PMID: 16388926 DOI: 10.1016/j.ejrad.2005.11.030] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2005] [Revised: 11/14/2005] [Accepted: 11/16/2005] [Indexed: 11/21/2022]
Abstract
This review deals with the in vivo magnetic resonance imaging (MRI) appearance of the human fetal abdomen. Imaging findings are correlated with current knowledge of human fetal anatomy and physiology, which are crucial to understand and interpret fetal abdominal MRI scans. As fetal MRI covers a period of more than 20 weeks, which is characterized not only by organ growth, but also by changes and maturation of organ function, a different MR appearance of the fetal abdomen results. This not only applies to the fetal intestines, but also to the fetal liver, spleen, and adrenal glands. Choosing the appropriate sequences, various aspects of age-related and organ-specific function can be visualized with fetal MRI, as these are mirrored by changes in signal intensities. Knowledge of normal development is essential to delineate normal from pathological findings in the respective developmental stages.
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Affiliation(s)
- Peter C Brugger
- Center of Anatomy and Cell Biology, Integrative Morphology Group, Medical University of Vienna, Waehringerstrasse 13, 1090 Vienna, Austria.
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