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Matheson AM, Tanimoto A, Woods JC. Imaging in Pediatric Lung Disease: Current Practice and Future Directions. Clin Chest Med 2024; 45:569-585. [PMID: 39069322 DOI: 10.1016/j.ccm.2024.03.005] [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] [Indexed: 07/30/2024]
Abstract
Pediatric diseases present differently from adult diseases and imaging forms a cornerstone of modern pediatric care through differential diagnosis, disease monitoring, and measuring response to therapy. Imaging is especially well suited to providing novel insights into the underlying mechanisms driving disease through structural and functional imaging. In this review, we describe key imaging findings in standard-of-care and state-of-the-art techniques in pediatric and adult diseases with origins in childhood. We examine applications in small airways disease, large airway disease, diseases of maturity, interstitial lung disease, neuromuscular disease, congenital disease, and pulmonary infection.
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Affiliation(s)
- Alexander M Matheson
- Center for Pulmonary Imaging Research, Division of Pulmonary Medicine, Cincinnati Children's Hospital Medical Center, 3333 Burnet Avenue, Cincinnati, OH 45229, USA
| | - Aki Tanimoto
- Department of Radiology, Cincinnati Children's Hospital Medical Center, 3333 Burnet Avenue, Cincinnati, OH 45229, USA
| | - Jason C Woods
- Center for Pulmonary Imaging Research, Division of Pulmonary Medicine, Cincinnati Children's Hospital Medical Center, 3333 Burnet Avenue, Cincinnati, OH 45229, USA; Department of Radiology, Cincinnati Children's Hospital Medical Center, 3333 Burnet Avenue, Cincinnati, OH 45229, USA; Cincinnati Bronchopulmonary Dysplasia Center, Children's Hospital Medical Center, 3333 Burnet Avenue, Cincinnati, OH 45229, USA.
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2
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Bjorkman KR, Miles KG, Bellew LE, Schneider KA, Magness SM, Higano NS, Ollberding NJ, Hoyos Cordon X, Hirsch RM, Hysinger E, Woods JC, Critser PJ. Patent Ductus Arteriosus and Lung Magnetic Resonance Imaging Phenotype in Moderate and Severe Bronchopulmonary Dysplasia-Pulmonary Hypertension. Am J Respir Crit Care Med 2024; 210:318-328. [PMID: 38568735 PMCID: PMC11348976 DOI: 10.1164/rccm.202310-1733oc] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Accepted: 04/03/2024] [Indexed: 08/02/2024] Open
Abstract
Rationale: Hemodynamically significant patent ductus arteriosus (hsPDA) in premature infants has been associated with bronchopulmonary dysplasia (BPD) and pulmonary hypertension (PH). However, these associations remain incompletely understood. Objectives: To assess the associations between hsPDA duration and clinical outcomes, PH, and phenotypic differences on lung magnetic resonance imaging (MRI). Methods: In this retrospective cohort study, we identified all infants with BPD at <32 weeks' gestation who also underwent research lung MRI at <48 weeks' postmenstrual age (PMA) from 2014 to 2022. Clinical echocardiograms were reviewed for hsPDA and categorized as no hsPDA, hsPDA 1-60 days, and hsPDA >60 days. Outcome variables included BPD severity, PH at 36 weeks' PMA, PH after 36 weeks' PMA in the absence of shunt (PH-pulmonary vascular disease [PVD]), tracheostomy or death, and lung phenotype by MRI via modified Ochiai score, indexed total lung volume, and whole-lung hyperdensity. Logistic regression and ANOVA were used. Measurements and Main Results: In total, 133 infants born at 26.2 ± 1.9 weeks, weighing 776 ± 276 g, were reviewed (47 with no hsPDA, 44 with hsPDA 1-60 days, and 42 with hsPDA >60 d). hsPDA duration > 60 days was associated with BPD severity (P < 0.01), PH at 36 weeks' PMA (adjusted odds ratio [aOR], 9.7 [95% confidence interval (CI), 3.3-28.4]), PH-PVD (aOR, 6.5 [95% CI, 2.3-18.3]), and tracheostomy or death (aOR, 3.0 [95% CI, 1.0-8.8]). Duration of hsPDA > 60 days was associated with higher Ochiai score (P = 0.03) and indexed total lung volume (P = 0.01) but not whole-lung hyperdensity (P = 0.91). Conclusions: In infants with moderate or severe BPD, prolonged exposure to hsPDA is associated with BPD severity, PH-PVD, and increased parenchymal lung disease by MRI.
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Affiliation(s)
| | | | | | | | | | - Nara S. Higano
- Center for Pulmonary Imaging Research, and
- Department of Pediatrics, College of Medicine, University of Cincinnati, Cincinnati, Ohio
| | - Nicholas J. Ollberding
- Division of Biostatistics and Epidemiology, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio; and
| | | | - Russel M. Hirsch
- The Heart Institute
- Department of Pediatrics, College of Medicine, University of Cincinnati, Cincinnati, Ohio
| | - Erik Hysinger
- Pulmonary Medicine
- Center for Pulmonary Imaging Research, and
- Department of Pediatrics, College of Medicine, University of Cincinnati, Cincinnati, Ohio
| | - Jason C. Woods
- Center for Pulmonary Imaging Research, and
- Department of Pediatrics, College of Medicine, University of Cincinnati, Cincinnati, Ohio
| | - Paul J. Critser
- The Heart Institute
- Center for Pulmonary Imaging Research, and
- Department of Pediatrics, College of Medicine, University of Cincinnati, Cincinnati, Ohio
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3
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Savoia M, Busolini E, Ibarra Rios D, Thomas B, Ruoss JL, McNamara PJ. Integrated Lung Ultrasound and Targeted Neonatal Echocardiography Evaluation in Infants Born Preterm. J Pediatr 2024; 275:114200. [PMID: 39032769 DOI: 10.1016/j.jpeds.2024.114200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2024] [Revised: 06/13/2024] [Accepted: 07/15/2024] [Indexed: 07/23/2024]
Affiliation(s)
- Marilena Savoia
- Neonatal Intensive Care Unit, S Maria della Misericordia Hospital, Udine, Italy.
| | - Eva Busolini
- Neonatal Intensive Care Unit, S Maria della Misericordia Hospital, Udine, Italy
| | - Daniel Ibarra Rios
- Division of Neonatology, Instituto Nacional de Perinatología Isidro Espinosa de los Reyes, Ciudad de México, Mexico, Mexico
| | - Brady Thomas
- Division of Neonatology, Department of Pediatrics, University of Iowa, Iowa City, IA
| | - J Lauren Ruoss
- Neonatal Intensive Care Unit, Winnie Palmer Hospital/Orlando Health Regional Hospital, Orlando, Fl
| | - Patrick J McNamara
- Division of Neonatology, Department of Pediatrics, University of Iowa, Iowa City, IA
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Fontijn S, Balink SJA, Bonte M, Andrinopoulou ER, Duijts L, Kroon AA, Ciet P, Pijnenburg MW. Chest computed tomography in severe bronchopulmonary dysplasia: Comparing quantitative scoring methods. Eur J Radiol 2023; 169:111168. [PMID: 37897957 DOI: 10.1016/j.ejrad.2023.111168] [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: 08/01/2023] [Revised: 10/19/2023] [Accepted: 10/21/2023] [Indexed: 10/30/2023]
Abstract
PURPOSE Bronchopulmonary dysplasia (BPD) is the most common complication of extreme preterm birth and structural lung abnormalities are frequently found in children with BPD. To quantify lung damage in BPD, three new Hounsfield units (HU) based chest-CT scoring methods were evaluated in terms of 1) intra- and inter-observer variability, 2) correlation with the validated Perth-Rotterdam-Annotated-Grid-Morphometric-Analysis (PRAGMA)-BPD score, and 3) correlation with clinical data. METHODS Chest CT scans of children with severe BPD were performed at a median of 7 months corrected age. Hyper- and hypo-attenuated regions were quantified using PRAGMA-BPD and three new HU based scoring methods (automated, semi-automated, and manual). Intra- and inter-observer variability was measured using intraclass correlation coefficients (ICC) and Bland-Altman plots. The correlation between the 4 scoring methods and clinical data was assessed using Spearman rank correlation. RESULTS Thirty-five patients (median gestational age 26.1 weeks) were included. Intra- and inter-observer variability was excellent for hyper- and hypo-attenuation regions for the manual HU method and PRAGMA-BPD (ICCs range 0.80-0.97). ICC values for the semi-automated HU method were poorer, in particular for the inter-observer variability of hypo- (0.22-0.71) and hyper-attenuation (-0.06-0.89). The manual HU method was highly correlated with PRAGMA-BPD score for both hyper- (ρs0.92, p < 0.001) and hypo-attenuation (ρs0.79, p < 0.001), while automated and semi-automated HU methods showed poor correlation for hypo- (ρs < 0.22) and good correlation for hyper-attenuation (ρs0.72-0.74, p < 0.001). Several scores of hyperattenuation correlated with the use of inhaled bronchodilators in the first year of life; two hypoattenuation scores correlated with birth weight. CONCLUSIONS PRAGMA-BPD and the manual HU method have the best reproducibility for quantification of CT abnormalities in BPD.
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Affiliation(s)
- S Fontijn
- Post-graduate School of Paediatrics, University of Modena and Reggio Emilia, Modena, Italy
| | - S J A Balink
- Erasmus MC - Sophia Children's Hospital, University Medical Centre Rotterdam, Department of Paediatrics, Division of Respiratory Medicine and Allergology, Rotterdam, the Netherlands
| | - M Bonte
- Erasmus MC - Sophia Children's Hospital, University Medical Centre Rotterdam, Department of Paediatrics, Division of Respiratory Medicine and Allergology, Rotterdam, the Netherlands
| | - E R Andrinopoulou
- Erasmus MC, University Medical Centre Rotterdam, Department of Biostatistics, Rotterdam, the Netherlands; Erasmus MC, University Medical Centre Rotterdam, Department of Epidemiology, Rotterdam, the Netherlands
| | - L Duijts
- Erasmus MC - Sophia Children's Hospital, University Medical Centre Rotterdam, Department of Paediatrics, Division of Respiratory Medicine and Allergology, Rotterdam, the Netherlands; Erasmus MC - Sophia Children's Hospital, University Medical Centre Rotterdam, Department of Paediatrics, Division of Neonatology, Rotterdam, the Netherlands
| | - A A Kroon
- Erasmus MC - Sophia Children's Hospital, University Medical Centre Rotterdam, Department of Paediatrics, Division of Neonatology, Rotterdam, the Netherlands
| | - P Ciet
- Erasmus MC - Sophia Children's Hospital, University Medical Centre Rotterdam, Department of Paediatrics, Division of Respiratory Medicine and Allergology, Rotterdam, the Netherlands; Erasmus MC, University Medical Centre Rotterdam, Department of Radiology and Nuclear Medicine, Rotterdam, the Netherlands; Policlinico Universitario, University of Cagliari, Cagliari, Italy
| | - M W Pijnenburg
- Erasmus MC - Sophia Children's Hospital, University Medical Centre Rotterdam, Department of Paediatrics, Division of Respiratory Medicine and Allergology, Rotterdam, the Netherlands.
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Alonso-Ojembarrena A, Aldecoa-Bilbao V, De Luca D. Imaging of bronchopulmonary dysplasia. Semin Perinatol 2023; 47:151812. [PMID: 37775364 DOI: 10.1016/j.semperi.2023.151812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/01/2023]
Abstract
Bronchopulmonary dysplasia (BPD) is a multifactorial disease with many associated co-morbidities, responsible for most cases of chronic lung disease in childhood. The use of imaging exams is pivotal for the clinical care of BPD and the identification of candidates for experimental therapies and a closer follow-up. Imaging is also useful to improve communication with the family and objectively evaluate the clinical evolution of the patient's disease. BPD imaging has been classically performed using only chest X-rays, but several modern techniques are currently available, such as lung ultrasound, thoracic tomography, magnetic resonance imaging and electrical impedance tomography. These techniques are more accurate and provide clinically meaningful information. We reviewed the most recent evidence published in the last five years regarding these techniques and analyzed their advantages and disadvantages.
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Affiliation(s)
- Almudena Alonso-Ojembarrena
- Neonatal Intensive Care Unit, Puerta del Mar University Hospital, Cádiz. Spain; Biomedical Research and Innovation Institute of Cádiz (INiBICA). Research Unit, Puerta del Mar University Hospital, Cádiz. Spain.
| | - Victoria Aldecoa-Bilbao
- Neonatology Department, Hospital Clinic Barcelona. BCNatal - Barcelona Center for Maternal-Fetal and Neonatal Medicine. Barcelona, Spain
| | - Daniele De Luca
- Division of Pediatrics and Neonatal Critical Care, "A.Béclère" Medical Center, Paris- Saclay University Hospitals, APHP, Paris, France; Physiopathology and Therapeutic Innovation Unit-INSERM U999, Paris-Saclay University, Paris, France; Department of Pediatrics, Division of Neonatology, Stanford University, School of Medicine, Palo Alto, CA, USA
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Shen J, Du Y, Sun Y, Huang X, Zhou J, Chen C. Modified lung ultrasound score for bronchopulmonary dysplasia predicts late respiratory outcomes in preterm infants. Pediatr Pulmonol 2023; 58:2551-2558. [PMID: 37294069 DOI: 10.1002/ppul.26546] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 05/10/2023] [Accepted: 05/26/2023] [Indexed: 06/10/2023]
Abstract
OBJECTIVE Lung ultrasound (LUS) is a useful and radiation-free diagnostic tool for predicting bronchopulmonary dysplasia, which is a risk factor for late respiratory disease. However, data on the relationship of LUS with late respiratory disease was scarce. This study aims to determine whether LUS is associated with late respiratory disease during early childhood. METHODS This prospective cohort study enrolled preterm infants born before 32 weeks of gestation. LUS was performed at 36 weeks' postmenstrual age. The predictive values of a modified lung ultrasound (mLUS) score based on eight standard sections were assessed to predict late respiratory disease, defined as a physician diagnosis of bronchopulmonary dysplasia deterioration, asthma, reactive airway disease, bronchiolitis, pneumonia, or respiratory-related hospitalization during the first 2 years of life. RESULTS A total of 94 infants completed follow-up, of whom 74.5% met the late respiratory disease criteria. The mLUS scores were significantly associated with late respiratory disease (adjusted odds ratio: 1.23, CI: 1.10-1.38, p < 0.001). The mLUS scores also well predicted late respiratory disease (AUC = 0.820, 95% CI: 0.733-0.907). These scores were superior to the classic lung ultrasound score (p = 0.02) and as accurate as the modified NICHD-defined bronchopulmonary dysplasia classification (p = 0.91). A mLUS score ≥14 was the optimal cutoff point for predicting late respiratory disease. CONCLUSION The modified lung ultrasound score correlates significantly with late respiratory disease and well predicts it in preterm infants during the first 2 years of life.
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Affiliation(s)
- Jieru Shen
- Department of Neonatology, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China
| | - Yang Du
- Department of Respiratory and Critical Care Medicine, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Yinghua Sun
- Department of Ultrasound, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China
| | - Xiangyuan Huang
- Saw Swee Hock School of Public Health, National University of Singapore, Singapore, Singapore
| | - Jianguo Zhou
- Department of Neonatology, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China
| | - Chao Chen
- Department of Neonatology, Children's Hospital of Fudan University, National Children's Medical Center, Shanghai, China
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Zanette B, Greer MLC, Moraes TJ, Ratjen F, Santyr G. The argument for utilising magnetic resonance imaging as a tool for monitoring lung structure and function in pediatric patients. Expert Rev Respir Med 2023; 17:527-538. [PMID: 37491192 DOI: 10.1080/17476348.2023.2241355] [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: 04/03/2023] [Revised: 07/06/2023] [Accepted: 07/24/2023] [Indexed: 07/27/2023]
Abstract
INTRODUCTION Although historically challenging to perform in the lung, technological advancements have made Magnetic Resonance Imaging (MRI) increasingly applicable for pediatric pulmonary imaging. Furthermore, a wide array of functional imaging techniques has become available that may be leveraged alongside structural imaging for increasingly sensitive biomarkers, or as outcome measures in the evaluation of novel therapies. AREAS COVERED In this review, recent technical advancements and modern methodologies for structural and functional lung MRI are described. These include ultrashort echo time (UTE) MRI, free-breathing contrast agent-free, functional lung MRI, and hyperpolarized gas MRI, amongst other techniques. Specific examples of the application of these methods in children are provided, principally drawn from recent research in asthma, bronchopulmonary dysplasia, and cystic fibrosis. EXPERT OPINION Pediatric lung MRI is rapidly growing, and is well poised for clinical utilization, as well as continued research into early disease detection, disease processes, and novel treatments. Structure/function complementarity makes MRI especially attractive as a tool for increased adoption in the evaluation of pediatric lung disease. Looking toward the future, novel technologies, such as low-field MRI and artificial intelligence, mitigate some of the traditional drawbacks of lung MRI and will aid in improving access to MRI in general, potentially spurring increased adoption and demand for pulmonary MRI in children.
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Affiliation(s)
- Brandon Zanette
- Translational Medicine Program, The Hospital for Sick Children, Toronto, ON, Canada
| | - Mary-Louise C Greer
- Department of Diagnostic Imaging, The Hospital for Sick Children, Toronto, ON, Canada
- Department of Medical Imaging, University of Toronto, Toronto, ON, Canada
| | - Theo J Moraes
- Translational Medicine Program, The Hospital for Sick Children, Toronto, ON, Canada
- Department of Pediatrics, Hospital for Sick Children, Toronto, ON, Canada
| | - Felix Ratjen
- Translational Medicine Program, The Hospital for Sick Children, Toronto, ON, Canada
- Division of Respiratory Medicine, The Hospital for Sick Children, Toronto, ON, Canada
| | - Giles Santyr
- Translational Medicine Program, The Hospital for Sick Children, Toronto, ON, Canada
- Department of Medical Biophysics, University of Toronto, Toronto, ON, Canada
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Marks KT, Higano NS, Kotagal M, Woods JC, Kingma PS. Magnetic Resonance Imaging-Based Evaluation of Anatomy and Outcome Prediction in Infants with Esophageal Atresia. Neonatology 2023; 120:185-195. [PMID: 36812903 PMCID: PMC10118939 DOI: 10.1159/000526794] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Accepted: 08/24/2022] [Indexed: 02/24/2023]
Abstract
INTRODUCTION There is currently no validated diagnostic modality to characterize the anatomy and predict outcomes of tracheal esophageal defects, such as esophageal atresia (EA) and tracheal esophageal fistulas (TEFs). We hypothesized that ultra-short echo-time MRI would provide enhanced anatomic information allowing for evaluation of specific EA/TEF anatomy and identification of risk factors that predict outcome in infants with EA/TEF. METHODS In this observational study, 11 infants had pre-repair ultra-short echo-time MRI of the chest completed. Esophageal size was measured at the widest point distal to the epiglottis and proximal to the carina. Angle of tracheal deviation was measured by identifying the initial point of deviation and the farthest lateral point proximal to the carina. RESULTS Infants without a proximal TEF had a larger proximal esophageal diameter (13.5 ± 5.1 mm vs. 6.8 ± 2.1 mm, p = 0.07) when compared to infants with a proximal TEF. The angle of tracheal deviation in infants without a proximal TEF was larger than infants with a proximal TEF (16.1 ± 6.1° vs. 8.2 ± 5.4°, p = 0.09) and controls (16.1 ± 6.1° vs. 8.0 ± 3.1°, p = 0.005). An increase in the angle of tracheal deviation was positively correlated with duration of post-operative mechanical ventilation (Pearson r = 0.83, p < 0.002) and total duration of post-operative respiratory support (Pearson r = 0.80, p = 0.004). DISCUSSION These results demonstrate that infants without a proximal TEF have a larger proximal esophagus and a greater angle of tracheal deviation which is directly correlated with the need for longer post-operative respiratory support. Additionally, these results demonstrate that MRI is a useful tool to assess the anatomy of EA/TEF.
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Affiliation(s)
- Kaitlyn T. Marks
- The Perinatal Institute, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, USA
| | - Nara S. Higano
- Center for Pulmonary Imaging Research, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, USA
- Department of Radiology, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, USA
- Division of Pulmonary Medicine, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, USA
| | - Meera Kotagal
- Division of General and Thoracic Surgery, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio; Department of Surgery, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Jason C. Woods
- Center for Pulmonary Imaging Research, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, USA
- Department of Radiology, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, USA
- Division of Pulmonary Medicine, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, USA
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Paul S. Kingma
- The Perinatal Institute, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, USA
- Center for Pulmonary Imaging Research, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio, USA
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
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Förster K, Marchi H, Stöcklein S, Dietrich O, Ehrhardt H, Wielpütz MO, Flemmer AW, Schubert B, Mall MA, Ertl-Wagner B, Hilgendorff A. Magnetic resonance imaging-based scoring of the diseased lung in the preterm infant with bronchopulmonary dysplasia: UNiforme Scoring of the disEAsed Lung in BPD (UNSEAL BPD). Am J Physiol Lung Cell Mol Physiol 2023; 324:L114-L122. [PMID: 36410026 DOI: 10.1152/ajplung.00430.2021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Neonatal chronic lung disease lacks standardized assessment of lung structural changes. We addressed this clinical need by the development of a novel scoring system [UNSEAL BPD (UNiforme Scoring of the disEAsed Lung in BPD)] using T2-weighted single-shot fast-spin-echo sequences from 3 T MRI in very premature infants with and without bronchopulmonary dysplasia (BPD). Quantification of interstitial and airway remodeling, emphysematous changes, and ventilation inhomogeneity was achieved by consensus scoring on a five-point Likert scale. We successfully identified moderate and severe disease by logistic regression [area under the curve (AUC), 0.89] complemented by classification tree analysis revealing gestational age-specific structural changes. We demonstrated substantial interreader reproducibility (weighted Cohen's κ 0.69) and disease specificity (AUC = 0.91). Our novel MRI score enables the standardized assessment of disease-characteristic structural changes in the preterm lung exhibiting significant potential as a quantifiable endpoint in early intervention clinical trials and long-term disease monitoring.
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Affiliation(s)
- Kai Förster
- Division of Neonatology, Dr. von Hauner Children's Hospital, University Hospital, LMU Munich, Munich, Germany.,Institute for Lung Biology and Disease and Comprehensive Pneumology Center (CPC), Helmholtz Zentrum München, Member of the German Center for Lung Research (DZL), Munich, Germany
| | - Hannah Marchi
- Institute of Computational Biology, Helmholtz Zentrum München, Munich, Germany.,Chair of Data Science, Faculty of Business Administration and Economics, Bielefeld University, Bielefeld, Germany
| | - Sophia Stöcklein
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | - Olaf Dietrich
- Department of Radiology, University Hospital, LMU Munich, Munich, Germany
| | - Harald Ehrhardt
- Department of General Pediatrics & Neonatology, Justus-Liebig-University, Member of the German Center for Lung Research (DZL), Giessen, Germany
| | - Mark O Wielpütz
- Department of Diagnostic and Interventional Radiology, University of Heidelberg, Heidelberg, Germany.,Translational Lung Research Center Heidelberg (TLRC), German Center for Lung Research (DZL), Heidelberg, Germany
| | - Andreas W Flemmer
- Division of Neonatology, Dr. von Hauner Children's Hospital, University Hospital, LMU Munich, Munich, Germany
| | - Benjamin Schubert
- Institute of Computational Biology, Helmholtz Zentrum München, Munich, Germany.,Department of Mathematics, Technische Universität München, Garching bei München, Germany
| | - Marcus A Mall
- Translational Lung Research Center Heidelberg (TLRC), German Center for Lung Research (DZL), Heidelberg, Germany.,Department of Pediatric Respiratory Medicine, Immunology and Critical Care Medicine, Charité-Universitätsmedizin Berlin, Berlin, Germany.,German Center for Lung Research (DZL), associated partner site, Berlin, Germany
| | - Birgit Ertl-Wagner
- Department of Medical Imaging, The Hospital for Sick Children, The University of Toronto, Toronto, Ontario, Canada
| | - Anne Hilgendorff
- Division of Neonatology, Dr. von Hauner Children's Hospital, University Hospital, LMU Munich, Munich, Germany.,Institute for Lung Biology and Disease and Comprehensive Pneumology Center (CPC), Helmholtz Zentrum München, Member of the German Center for Lung Research (DZL), Munich, Germany.,Center for Comprehensive Developmental Care (CDeCLMU), Social Pediatric Center (iSPZ), Dr. von Hauner Children's Hospital, University Hospital, LMU Munich, Munich, Germany
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10
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Elders BBLJ, Tiddens HAWM, Pijnenburg MWH, Reiss IKM, Wielopolski PA, Ciet P. Lung structure and function on MRI in preterm born school children with and without BPD: A feasibility study. Pediatr Pulmonol 2022; 57:2981-2991. [PMID: 35982507 PMCID: PMC9826116 DOI: 10.1002/ppul.26119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 07/05/2022] [Accepted: 07/11/2022] [Indexed: 01/11/2023]
Abstract
BACKGROUND AND OBJECTIVE The most common respiratory complication of prematurity is bronchopulmonary dysplasia (BPD), leading to structural lung changes and impaired respiratory outcomes. However, also preterm children without BPD may show similar adverse respiratory outcomes. There is a need for a safe imaging modality for preterm children with and without BPD for disease severity assessment and risk stratification. Our objective was to develop a magnetic resonance imaging (MRI) protocol in preterm children with and without BPD at school age. METHODS Nine healthy volunteers (median age 11.6 [range: 8.8-12.8] years), 11 preterm children with BPD (11.0 [7.2-15.6] years), and 9 without BPD (11.1 [10.7-12.6] years) underwent MRI. Images were scored on hypo- and hyperintense abnormalities, bronchopathy, and architectural distortion. MRI data were correlated to spirometry. Ventilation and perfusion defects were analyzed using Fourier Decomposition (FD) MRI. RESULTS On MRI, children with BPD had higher %diseased lung (9.1 (interquartile range [IQR] 5.9-11.6)%) compared to preterm children without BPD (3.4 (IQR 2.5-5.4)%, p < 0.001) and healthy volunteers (0.4 (IQR 0.1-0.8)%, p < 0.001). %Diseased lung correlated negatively with %predicted FEV1 (r = -0.40, p = 0.04), FEV1 /FVC (r = -0.49, p = 0.009) and FEF75 (r = -0.63, p < 0.001). Ventilation and perfusion defects on FD sequence corresponded to hypointense regions on expiratory MRI. CONCLUSION Chest MRI can identify structural and functional lung damage at school age in preterm children with and without BPD, showing a good correlation with spirometry. We propose MRI as a sensitive and safe imaging method (without ionizing radiation, contrast agents, or the use of anesthesia) for the long-term follow-up of preterm children.
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Affiliation(s)
- Bernadette B L J Elders
- Department of Paediatric Pulmonology and Allergology, Erasmus MC-Sophia Children's Hospital, University Medical Centre Rotterdam, Rotterdam, The Netherlands.,Department of Radiology and Nuclear Medicine, Erasmus MC-Sophia Children's Hospital, University Medical Centre Rotterdam, Rotterdam, The Netherlands
| | - Harm A W M Tiddens
- Department of Paediatric Pulmonology and Allergology, Erasmus MC-Sophia Children's Hospital, University Medical Centre Rotterdam, Rotterdam, The Netherlands.,Department of Radiology and Nuclear Medicine, Erasmus MC-Sophia Children's Hospital, University Medical Centre Rotterdam, Rotterdam, The Netherlands
| | - Mariëlle W H Pijnenburg
- Department of Paediatric Pulmonology and Allergology, Erasmus MC-Sophia Children's Hospital, University Medical Centre Rotterdam, Rotterdam, The Netherlands
| | - Irwin K M Reiss
- Department of Neonatology, Erasmus MC-Sophia Children's Hospital, University Medical Centre Rotterdam, Rotterdam, The Netherlands
| | - Piotr A Wielopolski
- Department of Radiology and Nuclear Medicine, Erasmus MC-Sophia Children's Hospital, University Medical Centre Rotterdam, Rotterdam, The Netherlands
| | - Pierluigi Ciet
- Department of Paediatric Pulmonology and Allergology, Erasmus MC-Sophia Children's Hospital, University Medical Centre Rotterdam, Rotterdam, The Netherlands.,Department of Radiology and Nuclear Medicine, Erasmus MC-Sophia Children's Hospital, University Medical Centre Rotterdam, Rotterdam, The Netherlands
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11
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Feldman K, Nitkin CR, Cuna A, Oschman A, Truog WE, Norberg M, Nyp M, Taylor JB, Lewis T. Corticosteroid response predicts bronchopulmonary dysplasia status at 36 weeks in preterm infants treated with dexamethasone: A pilot study. Pediatr Pulmonol 2022; 57:1760-1769. [PMID: 35434928 DOI: 10.1002/ppul.25928] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 04/06/2022] [Accepted: 04/15/2022] [Indexed: 11/09/2022]
Abstract
IMPORTANCE A major barrier to therapeutic development in neonates is a lack of standardized drug response measures that can be used as clinical trial endpoints. The ability to quantify treatment response in a way that aligns with relevant downstream outcomes may be useful as a surrogate marker for new therapies, such as those for bronchopulmonary dysplasia (BPD). OBJECTIVE To construct a measure of clinical response to dexamethasone that was well aligned with the incidence of severe BPD or death at 36 weeks' postmenstrual age. DESIGN Retrospective cohort study. SETTING Level IV Neonatal Intensive Care Unit. PARTICIPANTS Infants treated with dexamethasone for developing BPD between 2010 and 2020. MAIN OUTCOME(S) AND MEASURE(S) Two models were built based on demographics, changes in ventilatory support, and partial pressure of carbon dioxide (pCO2 ) after dexamethasone administration. An ordinal logistic regression and regularized binary logistic model for the composite outcome were used to associate response level to BPD outcomes defined by both the 2017 BPD Collaborative and 2018 Neonatal Research Network definitions. RESULTS Ninety-five infants were treated with dexamethasone before 36 weeks. Compared to the baseline support and demographic data at the time of treatment, changes in ventilatory support improved ordinal model sensitivity and specificity. For the binary classification, BPD incidence was well aligned with risk levels, increasing from 16% to 59%. CONCLUSIONS AND RELEVANCE Incorporation of response variables as measured by changes in ventilatory parameters and pCO2 following dexamethasone administration were associated with downstream outcomes. Incorporating drug response phenotype into a BPD model may enable more rapid development of future therapeutics.
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Affiliation(s)
- Keith Feldman
- Department of Pediatrics, Division of Health Services and Outcomes Research, Children's Mercy Kansas City, Kansas City, Missouri, USA.,Children's Mercy Kansas City, Center for Infant Pulmonary Disorders, Kansas City, Missouri, USA.,Department of Pediatrics, University of Missouri Kansas City School of Medicine, Kansas City, Missouri, USA
| | - Christopher R Nitkin
- Children's Mercy Kansas City, Center for Infant Pulmonary Disorders, Kansas City, Missouri, USA.,Department of Pediatrics, University of Missouri Kansas City School of Medicine, Kansas City, Missouri, USA.,Department of Pediatrics, Division of Neonatology, Children's Mercy Kansas City, Kansas City, Missouri, USA
| | - Alain Cuna
- Children's Mercy Kansas City, Center for Infant Pulmonary Disorders, Kansas City, Missouri, USA.,Department of Pediatrics, University of Missouri Kansas City School of Medicine, Kansas City, Missouri, USA.,Department of Pediatrics, Division of Neonatology, Children's Mercy Kansas City, Kansas City, Missouri, USA
| | - Alexandra Oschman
- Children's Mercy Kansas City, Center for Infant Pulmonary Disorders, Kansas City, Missouri, USA.,Department of Pediatrics, Division of Clinical Pharmacology, Toxicology and Therapeutic Innovation, Children's Mercy Kansas City, Kansas City, Missouri, USA
| | - William E Truog
- Children's Mercy Kansas City, Center for Infant Pulmonary Disorders, Kansas City, Missouri, USA.,Department of Pediatrics, University of Missouri Kansas City School of Medicine, Kansas City, Missouri, USA.,Department of Pediatrics, Division of Neonatology, Children's Mercy Kansas City, Kansas City, Missouri, USA
| | - Michael Norberg
- Children's Mercy Kansas City, Center for Infant Pulmonary Disorders, Kansas City, Missouri, USA.,Department of Pediatrics, Division of Neonatology, Children's Mercy Kansas City, Kansas City, Missouri, USA
| | - Michael Nyp
- Children's Mercy Kansas City, Center for Infant Pulmonary Disorders, Kansas City, Missouri, USA.,Department of Pediatrics, University of Missouri Kansas City School of Medicine, Kansas City, Missouri, USA.,Department of Pediatrics, Division of Neonatology, Children's Mercy Kansas City, Kansas City, Missouri, USA
| | - Jane B Taylor
- Department of Pediatrics, Division of Pulmonology, UPMC - Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania, USA
| | - Tamorah Lewis
- Children's Mercy Kansas City, Center for Infant Pulmonary Disorders, Kansas City, Missouri, USA.,Department of Pediatrics, University of Missouri Kansas City School of Medicine, Kansas City, Missouri, USA.,Department of Pediatrics, Division of Neonatology, Children's Mercy Kansas City, Kansas City, Missouri, USA
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12
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Higano NS, Bates AJ, Gunatilaka CC, Hysinger EB, Critser PJ, Hirsch R, Woods JC, Fleck RJ. Bronchopulmonary dysplasia from chest radiographs to magnetic resonance imaging and computed tomography: adding value. Pediatr Radiol 2022; 52:643-660. [PMID: 35122130 PMCID: PMC8921108 DOI: 10.1007/s00247-021-05250-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/27/2021] [Revised: 09/13/2021] [Accepted: 11/25/2021] [Indexed: 12/31/2022]
Abstract
Bronchopulmonary dysplasia (BPD) is a common long-term complication of preterm birth. The chest radiograph appearance and survivability have evolved since the first description of BPD in 1967 because of improved ventilation and clinical strategies and the introduction of surfactant in the early 1990s. Contemporary imaging care is evolving with the recognition that comorbidities of tracheobronchomalacia and pulmonary hypertension have a great influence on outcomes and can be noninvasively evaluated with CT and MRI techniques, which provide a detailed evaluation of the lungs, trachea and to a lesser degree the heart. However, echocardiography remains the primary modality to evaluate and screen for pulmonary hypertension. This review is intended to highlight the important findings that chest radiograph, CT and MRI can contribute to precision diagnosis, phenotyping and prognosis resulting in optimal management and therapeutics.
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Affiliation(s)
- Nara S Higano
- Center for Pulmonary Imaging Research, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
- Division of Pulmonary Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Alister J Bates
- Center for Pulmonary Imaging Research, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
- Division of Pulmonary Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Chamindu C Gunatilaka
- Center for Pulmonary Imaging Research, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
- Division of Pulmonary Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Erik B Hysinger
- Center for Pulmonary Imaging Research, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
- Division of Pulmonary Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Paul J Critser
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA
- Division of Cardiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Russel Hirsch
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA
- Division of Cardiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Jason C Woods
- Center for Pulmonary Imaging Research, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
- Division of Pulmonary Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA
- Department of Radiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Robert J Fleck
- Center for Pulmonary Imaging Research, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA.
- Department of Radiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA.
- Department of Radiology, University of Cincinnati College of Medicine, 3333 Burnet Ave., ML 5031, Cincinnati, OH, 45229, USA.
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13
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Adaikalam SA, Higano NS, Hysinger EB, Bates AJ, Fleck RJ, Schapiro AH, House MA, Nathan AT, Ahlfeld SK, Brady JM, Woods JC, Kingma PS. Tracheostomy prediction model in neonatal bronchopulmonary dysplasia via lung and airway MRI. Pediatr Pulmonol 2022; 57:1042-1050. [PMID: 35029053 PMCID: PMC8930535 DOI: 10.1002/ppul.25826] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 12/23/2021] [Accepted: 12/28/2021] [Indexed: 11/10/2022]
Abstract
RATIONALE Clinical management of neonatal bronchopulmonary dysplasia (BPD) is often imprecise and can vary widely between different institutions and providers, due to limited objective measurements of disease pathology severity. There is critical need to improve guidance on the application and timing of interventional treatments, such as tracheostomy. OBJECTIVES To generate an imaging-based clinical tool for early identification of those patients with BPD who are likely to require later tracheostomy and long-term mechanical ventilation. METHODS We conducted a prospective cohort study of n = 61 infants (55 BPD, 6 preterm non-BPD). Magnetic resonance imaging (MRI) scores of lung parenchymal disease were used to create a binomial logistic regression model for predicting tracheostomy requirement. This model was further investigated using clinical variables and MRI-quantified tracheomalacia (TM). MEASUREMENTS AND MAIN RESULTS A model for predicting tracheostomy requirement was created using MRI parenchymal score. This model had 89% accuracy, 100% positive predictive value (PPV), and 85% negative predictive value (NPV), compared with 84%, 60%, and 83%, respectively, when using only relevant clinical variables. In a subset of patients with airway MRI (n = 36), a model including lung and TM measurements had 83% accuracy, 92% PPV, and 78% NPV. CONCLUSIONS MRI-based measurements of parenchymal disease and TM can be used to predict need for tracheostomy in infants with BPD, more accurately than clinical factors alone. This prediction model has strong potential as a clinical tool for physicians and families for early determination of tracheostomy requirement.
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Affiliation(s)
- Stephanie A Adaikalam
- Department of Pediatrics, The Perinatal Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA.,Department of Pediatrics, Cincinnati Bronchopulmonary Dysplasia Center, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | - Nara S Higano
- Department of Pediatrics, Cincinnati Bronchopulmonary Dysplasia Center, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA.,Division of Pulmonary Medicine and Department of Radiology, Center for Pulmonary Imaging Research, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA.,Department of Pediatrics, Division of Pulmonary Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA.,Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA.,Department of Radiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | - Erik B Hysinger
- Department of Pediatrics, Cincinnati Bronchopulmonary Dysplasia Center, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA.,Division of Pulmonary Medicine and Department of Radiology, Center for Pulmonary Imaging Research, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA.,Department of Pediatrics, Division of Pulmonary Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA.,Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Alister J Bates
- Department of Pediatrics, Cincinnati Bronchopulmonary Dysplasia Center, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA.,Division of Pulmonary Medicine and Department of Radiology, Center for Pulmonary Imaging Research, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA.,Department of Pediatrics, Division of Pulmonary Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA.,Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA.,Department of Radiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | - Robert J Fleck
- Department of Pediatrics, Cincinnati Bronchopulmonary Dysplasia Center, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA.,Department of Radiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA.,Department of Radiology, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Andrew H Schapiro
- Department of Pediatrics, Cincinnati Bronchopulmonary Dysplasia Center, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA.,Department of Radiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA.,Department of Radiology, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Melissa A House
- Department of Pediatrics, The Perinatal Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA.,Department of Pediatrics, Cincinnati Bronchopulmonary Dysplasia Center, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA.,Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Amy T Nathan
- Department of Pediatrics, The Perinatal Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA.,Department of Pediatrics, Cincinnati Bronchopulmonary Dysplasia Center, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA.,Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Shawn K Ahlfeld
- Department of Pediatrics, The Perinatal Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA.,Department of Pediatrics, Cincinnati Bronchopulmonary Dysplasia Center, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA.,Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Jennifer M Brady
- Department of Pediatrics, The Perinatal Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA.,Department of Pediatrics, Cincinnati Bronchopulmonary Dysplasia Center, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA.,Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Jason C Woods
- Department of Pediatrics, Cincinnati Bronchopulmonary Dysplasia Center, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA.,Division of Pulmonary Medicine and Department of Radiology, Center for Pulmonary Imaging Research, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA.,Department of Pediatrics, Division of Pulmonary Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA.,Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA.,Department of Radiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA.,Department of Radiology, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Paul S Kingma
- Department of Pediatrics, The Perinatal Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA.,Department of Pediatrics, Cincinnati Bronchopulmonary Dysplasia Center, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA.,Division of Pulmonary Medicine and Department of Radiology, Center for Pulmonary Imaging Research, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA.,Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
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14
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Zanette B, Schrauben EM, Munidasa S, Goolaub DS, Singh A, Coblentz A, Stirrat E, Couch MJ, Grimm R, Voskrebenzev A, Vogel-Claussen J, Seethamraju RT, Macgowan CK, Greer MLC, Tam EWY, Santyr G. Clinical Feasibility of Structural and Functional MRI in Free-Breathing Neonates and Infants. J Magn Reson Imaging 2022; 55:1696-1707. [PMID: 35312203 DOI: 10.1002/jmri.28165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2020] [Revised: 03/08/2022] [Accepted: 03/09/2022] [Indexed: 11/11/2022] Open
Abstract
BACKGROUND Evaluation of structural lung abnormalities with magnetic resonance imaging (MRI) has previously been shown to be predictive of clinical neonatal outcomes in preterm birth. MRI during free-breathing with phase-resolved functional lung (PREFUL) may allow for complimentary functional information without exogenous contrast. PURPOSE To investigate the feasibility of structural and functional pulmonary MRI in a cohort of neonates and infants with no cardiorespiratory disease. Macrovascular pulmonary blood flows were also evaluated. STUDY TYPE Prospective. POPULATION Ten term infants with no clinically defined cardiorespiratory disease were imaged. Infants recruited from the general population and neonatal intensive care unit (NICU) were studied. FIELD STRENGTH/SEQUENCE T1 -weighted VIBE, T2 -weighted BLADE uncorrected for motion. Ultrashort echo time (UTE) and 3D-flow data were acquired during free-breathing with self-navigation and retrospective reconstruction. Single slice 2D-gradient echo (GRE) images were acquired during free-breathing for PREFUL analysis. Imaging was performed at 3 T. ASSESSMENT T1 , T2 , and UTE images were scored according to the modified Ochiai scheme by three pediatric body radiologists. Ventilation/perfusion-weighted maps were extracted from free-breathing GRE images using PREFUL analysis. Ventilation and perfusion defect percent (VDP, QDP) were calculated from the segmented ventilation and perfusion-weighted maps. Time-averaged cardiac blood velocities from three-dimensional-flow were evaluated in major pulmonary arteries and veins. STATISTICAL TEST Intraclass correlation coefficient (ICC). RESULTS The ICC of replicate structural scores was 0.81 (95% CI: 0.45-0.95) across three observers. Elevated Ochiai scores, VDP, and QDP were observed in two NICU participants. Excluding these participants, mean ± standard deviation structural scores were 1.2 ± 0.8, while VDP and QDP were 1.0% ± 1.1% and 0.4% ± 0.5%, respectively. Main pulmonary arterial blood flows normalized to body surface area were 3.15 ± 0.78 L/min/m2 . DATA CONCLUSION Structural and functional pulmonary imaging is feasible using standard clinical MRI hardware (commercial whole-body 3 T scanner, table spine array, and flexible thoracic array) in free-breathing infants. EVIDENCE LEVEL 2 TECHNICAL EFFICACY: Stage 1.
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Affiliation(s)
- Brandon Zanette
- Translational Medicine, The Hospital for Sick Children, Toronto, Canada
| | - Eric M Schrauben
- Translational Medicine, The Hospital for Sick Children, Toronto, Canada
| | - Samal Munidasa
- Translational Medicine, The Hospital for Sick Children, Toronto, Canada.,Department of Medical Biophysics, University of Toronto, Toronto, Canada
| | - Datta S Goolaub
- Translational Medicine, The Hospital for Sick Children, Toronto, Canada
| | - Anuradha Singh
- Department of Diagnostic Imaging, The Hospital for Sick Children, Toronto, Canada
| | - Ailish Coblentz
- Department of Diagnostic Imaging, The Hospital for Sick Children, Toronto, Canada.,Department of Medical Imaging, University of Toronto, Toronto, Canada
| | - Elaine Stirrat
- Translational Medicine, The Hospital for Sick Children, Toronto, Canada
| | - Marcus J Couch
- Translational Medicine, The Hospital for Sick Children, Toronto, Canada.,Department of Medical Biophysics, University of Toronto, Toronto, Canada
| | - Robert Grimm
- MR Application Predevelopment, Siemens Healthcare, Erlangen, Germany
| | - Andreas Voskrebenzev
- Diagnostic and Interventional Radiology, Hannover Medical School, Hannover, Germany.,Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Member of the German Center for Lung Research (DZL), Hannover, Germany
| | - Jens Vogel-Claussen
- Diagnostic and Interventional Radiology, Hannover Medical School, Hannover, Germany.,Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Member of the German Center for Lung Research (DZL), Hannover, Germany
| | | | - Christopher K Macgowan
- Translational Medicine, The Hospital for Sick Children, Toronto, Canada.,Department of Medical Biophysics, University of Toronto, Toronto, Canada
| | - Mary-Louise C Greer
- Department of Diagnostic Imaging, The Hospital for Sick Children, Toronto, Canada.,Department of Medical Imaging, University of Toronto, Toronto, Canada
| | - Emily W Y Tam
- Neurosciences and Mental Health, The Hospital for Sick Children, Toronto, Canada.,Department of Paediatrics, The Hospital for Sick Children, Toronto, Canada
| | - Giles Santyr
- Translational Medicine, The Hospital for Sick Children, Toronto, Canada.,Department of Medical Biophysics, University of Toronto, Toronto, Canada
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15
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Gravity-induced loss of aeration and atelectasis development in the preterm lung: a serial sonographic assessment. J Perinatol 2022; 42:231-236. [PMID: 34417561 PMCID: PMC8377153 DOI: 10.1038/s41372-021-01189-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/27/2021] [Revised: 07/29/2021] [Accepted: 08/10/2021] [Indexed: 12/17/2022]
Abstract
OBJECTIVE To assess the impact of gravity and time on the changes in the distribution patterns of loss of aeration and atelectasis development in very preterm infants. STUDY DESIGN Preterm infants less than 32 weeks gestation were included in this prospective, observational study. Infants were assessed via serial lung ultrasound (LUS) score in four lung zones, performed on days 7, 14, 21, and 28 after birth. RESULT Eighty-eight patients were enrolled. There was a significant main effect of gravity (P < 0.001) and time (P = 0.01) on the LUS score between gravity-dependent lungs and non-dependent lungs. Moreover, there was a significant main effect of gravity (P = 0.003) on atelectasis development between the lungs. CONCLUSION Gravity and time have an impact on the changes in the distribution patterns of gravity-induced lung injuries in preterm infants.
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16
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Wielpütz MO. Commentary: Expert Opinion to "Imaging Bronchopulmonary Dysplasia-A Multimodality Update". Front Med (Lausanne) 2021; 8:737724. [PMID: 34746176 PMCID: PMC8566914 DOI: 10.3389/fmed.2021.737724] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Accepted: 09/23/2021] [Indexed: 11/29/2022] Open
Affiliation(s)
- Mark O Wielpütz
- Translational Lung Research Center (TLRC), German Center for Lung Research (DZL), University of Heidelberg, Heidelberg, Germany.,Department of Diagnostic and Interventional Radiology, University of Heidelberg, Heidelberg, Germany.,Department of Diagnostic and Interventional Radiology With Nuclear Medicine, Thoraxklinik at University of Heidelberg, Heidelberg, Germany
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17
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Moschino L, Bonadies L, Baraldi E. Lung growth and pulmonary function after prematurity and bronchopulmonary dysplasia. Pediatr Pulmonol 2021; 56:3499-3508. [PMID: 33729686 PMCID: PMC8597033 DOI: 10.1002/ppul.25380] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 02/23/2021] [Accepted: 03/10/2021] [Indexed: 12/19/2022]
Abstract
Bronchopulmonary dysplasia (BPD) still carries a heavy burden of morbidity and mortality in survivors of extreme prematurity. The disease is characterized by simplification of the alveolar structure, involving a smaller number of enlarged alveoli due to decreased septation and a dysmorphic pulmonary microvessel growth. These changes lead to persistent abnormalities mainly affecting the smaller airways, lung parenchyma, and pulmonary vasculature, which can be assessed with lung function tests and imaging techniques. Several longitudinal lung function studies have demonstrated that most preterm-born subjects with BPD embark on a low lung function trajectory, never achieving their full airway growth potential. They are consequently at higher risk of developing a chronic obstructive pulmonary disease-like phenotype later in life. Studies based on computer tomography and magnetic resonance imaging, have also shown that in these patients there is a persistence of lung abnormalities like emphysematous areas, bronchial wall thickening, interstitial opacities, and mosaic lung attenuation also in adult age. This review aims to outline the current knowledge of pulmonary and vascular growth in survivors of BPD and the evidence of their lung function and imaging up to adulthood.
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Affiliation(s)
- Laura Moschino
- Department of Women's and Children's Health, Neonatal Intensive Care Unit, Padova University Hospital, Padova, Italy
| | - Luca Bonadies
- Department of Women's and Children's Health, Neonatal Intensive Care Unit, Padova University Hospital, Padova, Italy
| | - Eugenio Baraldi
- Department of Women's and Children's Health, Neonatal Intensive Care Unit, Padova University Hospital, Padova, Italy.,Institute of Pediatric Research (IRP), Fondazione Città della Speranza, Padova, Italy
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18
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Lin NY, Roach DJ, Willmering MM, Walkup LL, Hossain MM, Desirazu P, Cleveland ZI, Guilbert TW, Woods JC. 129Xe MRI as a measure of clinical disease severity for pediatric asthma. J Allergy Clin Immunol 2021; 147:2146-2153.e1. [PMID: 33227317 DOI: 10.1016/j.jaci.2020.11.010] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 11/06/2020] [Accepted: 11/11/2020] [Indexed: 01/20/2023]
Abstract
BACKGROUND Measurement of regional lung ventilation with hyperpolarized 129Xe magnetic resonance imaging (129Xe MRI) in pediatric asthma is poised to advance our understanding of disease mechanisms and pathophysiology in a disorder with diverse clinical phenotypes. 129Xe MRI has not been investigated in a pediatric asthma cohort. OBJECTIVE We hypothesized that 129Xe MRI is feasible and can demonstrate ventilation defects that relate to and predict clinical severity in a pediatric asthma cohort. METHODS Thirty-seven children (13 with severe asthma, 8 with mild/moderate asthma, 16 age-matched healthy controls) aged 6 to 17 years old were imaged with 129Xe MRI. Ventilation defect percentage (VDP) and image reader score were calculated and compared with clinical measures at baseline and at follow-up. RESULTS Children with asthma had higher VDP (P = .002) and number of defects per image slice (defects/slice) (P = .0001) than children without asthma. Children with clinically severe asthma had significantly higher VDP and number of defects/slice than healthy controls. Children with asthma who had a higher number of defects/slice had a higher rate of health care utilization (r = 0.48; P = .03) and oral corticosteroid use (r = 0.43; P = .05) at baseline. Receiver-operating characteristic analysis demonstrated that the VDP and number of defects/slice were predictive of increased health care utilization, asthma, and severe asthma. VDP correlated with FEV1 (r = -0.35; P = .04) and FEV1/forced vital capacity ratio (r = -0.41; P = .01). CONCLUSIONS 129Xe MRI correlates with asthma severity, health care utilization, and oral corticosteroid use. Because delineation of clinical severity is often difficult in children, 129Xe MRI may be an important biomarker for severity, with potential to identify children at higher risk for exacerbations and improve outcomes.
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Affiliation(s)
- Nancy Y Lin
- Division of Pulmonary Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - David J Roach
- Center for Pulmonary Imaging Research, Division of Pulmonary Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio; Department of Radiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Matthew M Willmering
- Center for Pulmonary Imaging Research, Division of Pulmonary Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio; Department of Radiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Laura L Walkup
- Center for Pulmonary Imaging Research, Division of Pulmonary Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio; Department of Radiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio; Department of Pediatrics, University of Cincinnati, Cincinnati, Ohio; Department of Biomedical Engineering, University of Cincinnati College of Engineering and Applied Science, Cincinnati, Ohio
| | - Md Monir Hossain
- Department of Pediatrics, University of Cincinnati, Cincinnati, Ohio; Division of Biostatistics & Epidemiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Priyanka Desirazu
- Center for Pulmonary Imaging Research, Division of Pulmonary Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio; Department of Radiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Zackary I Cleveland
- Center for Pulmonary Imaging Research, Division of Pulmonary Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio; Department of Radiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio; Department of Pediatrics, University of Cincinnati, Cincinnati, Ohio; Department of Biomedical Engineering, University of Cincinnati College of Engineering and Applied Science, Cincinnati, Ohio
| | - Theresa W Guilbert
- Division of Pulmonary Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio; Department of Pediatrics, University of Cincinnati, Cincinnati, Ohio
| | - Jason C Woods
- Center for Pulmonary Imaging Research, Division of Pulmonary Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio; Department of Radiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio; Department of Pediatrics, University of Cincinnati, Cincinnati, Ohio.
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19
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Higano NS, Ruoss JL, Woods JC. Modern pulmonary imaging of bronchopulmonary dysplasia. J Perinatol 2021; 41:707-717. [PMID: 33547408 PMCID: PMC8561744 DOI: 10.1038/s41372-021-00929-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2020] [Revised: 11/05/2020] [Accepted: 01/15/2021] [Indexed: 01/30/2023]
Abstract
Bronchopulmonary dysplasia (BPD) is a complex and serious cardiopulmonary morbidity in infants who are born preterm. Despite advances in clinical care, BPD remains a significant source of morbidity and mortality, due in large part to the increased survival of extremely preterm infants. There are few strong early prognostic indicators of BPD or its later outcomes, and evidence for the usage and timing of various interventions is minimal. As a result, clinical management is often imprecise. In this review, we highlight cutting-edge methods and findings from recent pulmonary imaging research that have high translational value. Further, we discuss the potential role that various radiological modalities may play in early risk stratification for development of BPD and in guiding treatment strategies of BPD when employed in varying severities and time-points throughout the neonatal disease course.
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Affiliation(s)
- 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
- Cincinnati Bronchopulmonary Dysplasia Center, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - J Lauren Ruoss
- Division of Neonatology, Department of Pediatrics, College of Medicine, University of Florida, Gainesville, FL, 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.
- Cincinnati Bronchopulmonary Dysplasia Center, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA.
- Department of Pediatrics, College of Medicine, University of Cincinnati, Cincinnati, OH, USA.
- Department of Radiology, College of Medicine, University of Cincinnati, Cincinnati, OH, USA.
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20
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Moutafidis D, Gavra M, Golfinopoulos S, Oikonomopoulou C, Kitra V, Woods JC, Kaditis AG. Lung hyperinflation quantitated by chest CT in children with bronchiolitis obliterans syndrome following allogeneic hematopoietic cell transplantation. Clin Imaging 2021; 75:97-104. [PMID: 33515927 DOI: 10.1016/j.clinimag.2021.01.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 12/21/2020] [Accepted: 01/11/2021] [Indexed: 12/17/2022]
Abstract
OBJECTIVES Bronchiolitis obliterans syndrome (BOS) diagnosis in children following allogeneic hematopoietic stem cell transplantation (post-HSCT) is based on detection of airway obstruction on spirometry and air-trapping, small airway thickening or bronchiectasis on chest CT. We assessed the relationship between spirometry indices and low-attenuation lung volume at total lung capacity (TLC) on CT. METHODS Data of children post-HSCT with and without BOS were analyzed. An age-specific, low-attenuation threshold (LAT) was defined as average of (mean-1SD) lung parenchyma attenuation of 5 control subjects without lung disease matched to each age subgroup of post-HSCT patients. % CT lung volume at TLC with attenuation values <LAT was calculated. Association between % lung volume with low attenuation and FEV1/FVC was assessed. RESULTS Twenty-nine children post-HSCT were referred to exclude BOS and 12 of them had spirometry and an analyzable chest CT. We studied: (i) 6 children post-HSCT/BOS (median age: 8.5 years [IQR 7, 15]; median FEV1/FVC z-score: -2.60 [IQR -2.93, -2.14]); (ii) 6 children post-HSCT/no BOS (age: 13.5 years [9.8, 16.3]; FEV1/FVC z-score: 0.44 [-0.30, 2.10]); and (iii) 40 controls without lung disease (age:11 years [8.3, 15.8]). Patients post-HSCT/BOS had significantly higher % lung volume with low attenuation than patients post-HSCT/no BOS: median % volume 16.4% (7.1%, 37.2%) vs. 0.61% (0.34%, 2.79%), respectively; P = .004. An exponential model described the association between % CT lung volume below LAT and FEV1/FVC z-score (r2 = 0.76; P < .001). CONCLUSION In children post-HSCT with BOS, low-attenuation lung volume on chest CT is associated with airway obstruction severity as expressed by FEV1/FVC z-score.
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Affiliation(s)
- Dimitrios Moutafidis
- Division of Pediatric Pulmonology, First Department of Pediatrics, National and Kapodistrian University of Athens School of Medicine & Aghia Sophia Children's Hospital, Athens, Greece
| | - Maria Gavra
- CT, MRI & PET/CT Department, Aghia Sophia Children's Hospital, Athens, Greece
| | | | | | - Vasiliki Kitra
- Stem Cell Transplant Unit, Aghia Sophia Children's Hospital, Athens, Greece
| | - Jason C Woods
- Center for Pulmonary Imaging Research, Division of Pulmonary Medicine and Department of Radiology, Cincinnati Children's Hospital Medical Center & Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Athanasios G Kaditis
- Division of Pediatric Pulmonology, First Department of Pediatrics, National and Kapodistrian University of Athens School of Medicine & Aghia Sophia Children's Hospital, Athens, Greece.
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21
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Hahn AD, Malkus A, Kammerman J, Higano N, Walkup LL, Woods J, Fain SB. Effects of neonatal lung abnormalities on parenchymal R 2 * estimates. J Magn Reson Imaging 2021; 53:1853-1861. [PMID: 33404085 DOI: 10.1002/jmri.27487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Revised: 12/08/2020] [Accepted: 12/10/2020] [Indexed: 11/09/2022] Open
Abstract
Infants admitted to the neonatal intensive care unit (NICU) often suffer from multifaceted pulmonary morbidities that are not well understood. Ultrashort echo time (UTE) magnetic resonance imaging (MRI) is a promising technique for pulmonary imaging in this population without requiring exposure to ionizing radiation. The aims of this study were to investigate the effect of neonatal pulmonary disease on R2 * and tissue density and to utilize numerical simulations to evaluate the effect of different alveolar structures on predicted R2 *.This was a prospective study, in which 17 neonatal human subjects (five control, seven with bronchopulmonary dysplasia [BPD], five with congenital diaphragmatic hernia [CDH]) were enrolled. Twelve subjects were male and five were female, with postmenstrual age (PMA) at MRI of 39.7 ± 4.7 weeks. A 1.5T/multiecho three-dimensional UTE MRI was used. Pulmonary R2 * and tissue density were compared across disease groups over the whole lung and regionally. A spherical shell alveolar model was used to predict the expected R2 * over a range of tissue densities and tissue susceptibilities. Tests for significantly different mean R2 * and tissue densities across disease groups were evaluated using analysis of variance, with subsequent pairwise group comparisons performed using t tests. Lung tissue density was lower in the ipsilateral lung in CDH compared to both controls and BPD patients (both p < 0.05), while only the contralateral lung in CDH (CDHc) had higher whole-lung R2 * than both controls and BPD (both p < 0.05). R2 * differences were significant between controls and CDHc within all tissue density ranges (all p < 0.05) with the exception of the 80%-90% range (p = 0.17). Simulations predicted an inverse relationship between alveolar tissue density and R2 * that matches empirical human data. Alveolar wall thickness had no effect on R2 * independent of density (p = 1). The inverse relationship between R2 * and tissue density is influenced by the presence of disease globally and regionally in neonates with BPD and CDH in the NICU. LEVEL OF EVIDENCE: 2. TECHNICAL EFFICACY STAGE: 2.
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Affiliation(s)
- Andrew D Hahn
- Department of Medical Physics, University of Wisconsin, Madison, Wisconsin, USA
| | - Annelise Malkus
- Department of Medical Physics, University of Wisconsin, Madison, Wisconsin, USA
| | - Jeffery Kammerman
- Department of Medical Physics, University of Wisconsin, Madison, Wisconsin, USA
| | - Nara Higano
- Center for Pulmonary Imaging Research, Division of Pulmonary Medicine and Department of Radiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA
| | - Laura L Walkup
- Center for Pulmonary Imaging Research, Division of Pulmonary Medicine and Department of Radiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA.,Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Jason Woods
- Center for Pulmonary Imaging Research, Division of Pulmonary Medicine and Department of Radiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio, USA.,Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
| | - Sean B Fain
- Department of Medical Physics, University of Wisconsin, Madison, Wisconsin, USA.,Department of Radiology, University of Wisconsin, Madison, Wisconsin, USA.,Department of Biomedical Engineering, University of Wisconsin, Madison, Wisconsin, USA
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22
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Wickramasinghe LC, van Wijngaarden P, Johnson C, Tsantikos E, Hibbs ML. An Experimental Model of Bronchopulmonary Dysplasia Features Long-Term Retinal and Pulmonary Defects but Not Sustained Lung Inflammation. Front Pediatr 2021; 9:689699. [PMID: 34527643 PMCID: PMC8435611 DOI: 10.3389/fped.2021.689699] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Accepted: 08/06/2021] [Indexed: 11/19/2022] Open
Abstract
Bronchopulmonary dysplasia (BPD) is a severe lung disease that affects preterm infants receiving oxygen therapy. No standardized, clinically-relevant BPD model exists, hampering efforts to understand and treat this disease. This study aimed to evaluate and confirm a candidate model of acute and chronic BPD, based on exposure of neonatal mice to a high oxygen environment during key lung developmental stages affected in preterm infants with BPD. Neonatal C57BL/6 mouse pups were exposed to 75% oxygen from postnatal day (PN)-1 for 5, 8, or 14 days, and their lungs were examined at PN14 and PN40. While all mice showed some degree of lung damage, mice exposed to hyperoxia for 8 or 14 days exhibited the greatest septal wall thickening and airspace enlargement. Furthermore, when assessed at PN40, mice exposed for 8 or 14 days to supplemental oxygen exhibited augmented septal wall thickness and emphysema, with the severity increased with the longer exposure, which translated into a decline in respiratory function at PN80 in the 14-day model. In addition to this, mice exposed to hyperoxia for 8 days showed significant expansion of alveolar epithelial type II cells as well as the greatest fibrosis when assessed at PN40 suggesting a healing response, which was not seen in mice exposed to high oxygen for a longer period. While evidence of lung inflammation was apparent at PN14, chronic inflammation was absent from all three models. Finally, exposure to high oxygen for 14 days also induced concurrent outer retinal degeneration. This study shows that early postnatal exposure to high oxygen generates hallmark acute and chronic pathologies in mice that highlights its use as a translational model of BPD.
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Affiliation(s)
- Lakshanie C Wickramasinghe
- Leukocyte Signalling Laboratory, Department of Immunology and Pathology, Central Clinical School, Monash University, Melbourne, VIC, Australia
| | - Peter van Wijngaarden
- Department of Surgery - Ophthalmology, University of Melbourne, Melbourne, VIC, Australia.,Centre for Eye Research Australia, Royal Victorian Eye and Ear Hospital, East Melbourne, VIC, Australia
| | - Chad Johnson
- Monash Micro Imaging, Alfred Research Alliance, Monash University, Melbourne, VIC, Australia
| | - Evelyn Tsantikos
- Leukocyte Signalling Laboratory, Department of Immunology and Pathology, Central Clinical School, Monash University, Melbourne, VIC, Australia
| | - Margaret L Hibbs
- Leukocyte Signalling Laboratory, Department of Immunology and Pathology, Central Clinical School, Monash University, Melbourne, VIC, Australia
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23
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Predicting Long-Term Respiratory Outcomes in Premature Infants: Is It Time to Move beyond Bronchopulmonary Dysplasia? CHILDREN-BASEL 2020; 7:children7120283. [PMID: 33321724 PMCID: PMC7763238 DOI: 10.3390/children7120283] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 12/07/2020] [Accepted: 12/08/2020] [Indexed: 11/17/2022]
Abstract
Premature birth has been shown to be associated with adverse respiratory health in children and adults; children diagnosed with bronchopulmonary dysplasia (BPD) in infancy are at particularly high risk. Since its first description by Northway et al. about half a century ago, the definition of BPD has gone through several iterations reflecting the changes in the patient population, advancements in knowledge of lung development and injury, and improvements in perinatal care practices. One of the key benchmarks for optimally defining BPD has been the ability to predict long-term respiratory and health outcomes. This definition is needed by multiple stakeholders for hosts of reasons including: providing parents with some expectations for the future, to guide clinicians for developing longer term follow-up practices, to assist policy makers to allocate resources, and to support researchers involved in developing preventive or therapeutic strategies and designing studies with meaningful outcome measures. Long-term respiratory outcomes in preterm infants with BPD have shown variable results reflecting not only limitations of the current definition of BPD, but also potentially the impact of other prenatal, postnatal and childhood factors on the respiratory health. In this manuscript, we present an overview of the long-term respiratory outcomes in infants with BPD and discuss the role of other modifiable or non-modifiable factors affecting respiratory health in preterm infants. We will also discuss the limitations of using BPD as a predictor of respiratory morbidities and some of the recent advances in delineating the causes and severity of respiratory insufficiency in infants diagnosed with BPD.
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24
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Gouwens KR, Higano NS, Marks KT, Stimpfl JN, Hysinger EB, Woods JC, Kingma PS. Magentic Resonance Imaging Evaluation of Regional Lung Vts in Severe Neonatal Bronchopulmonary Dysplasia. Am J Respir Crit Care Med 2020; 202:1024-1031. [PMID: 32459506 DOI: 10.1164/rccm.202001-0213oc] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Rationale: Bronchopulmonary dysplasia is a heterogeneous lung disease characterized by regions of cysts and fibrosis, but methods for evaluating lung function are limited to whole lung rather than specific regions of interest.Objectives: Respiratory-gated, ultrashort echo time magnetic resonance imaging was used to test the hypothesis that cystic regions of the lung will exhibit a quantifiable Vt that will correlate with ventilator settings and clinical outcomes.Methods: Magnetic resonance images of 17 nonsedated, quiet-breathing infants with severe bronchopulmonary dysplasia were reconstructed into end-inspiration and end-expiration images. Cysts were identified and measured by using density threshold combined with manual identification and segmentation. Regional Vts were calculated by subtracting end-expiration from end-inspiration volumes in total lung, noncystic lung, total-cystic lung, and individual large cysts.Measurements and Main Results: Cystic lung areas averaged larger Vts than noncystic lung when normalized by volume (0.8 ml Vt/ml lung vs. 0.1 ml Vt/ml lung, P < 0.002). Cyst Vt correlates with cyst size (P = 0.012 for total lung cyst and P < 0.002 for large cysts), although there was variability between individual cyst Vt, with 22% of cysts demonstrating negative Vt. Peak inspiratory pressure positively correlated with total lung Vt (P = 0.027) and noncystic Vt (P = 0.015) but not total lung cyst Vt (P = 0.8). Inspiratory time and respiratory rate did not improve Vt of any analyzed lung region.Conclusions: Cystic lung has greater normalized Vt when compared with noncystic lung. Ventilator pressure increases noncystic lung Vt, but inspiratory time does not correlate with Vt of normal or cystic lung.
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Affiliation(s)
- Kara R Gouwens
- The Perinatal Institute.,Cincinnati Bronchopulmonary Dysplasia Center
| | - Nara S Higano
- Cincinnati Bronchopulmonary Dysplasia Center.,Center for Pulmonary Imaging Research.,Department of Radiology, and.,Division of Pulmonary Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio; and
| | | | | | - Erik B Hysinger
- Cincinnati Bronchopulmonary Dysplasia Center.,Center for Pulmonary Imaging Research.,Department of Radiology, and.,Division of Pulmonary Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio; and.,Department of Pediatrics and
| | - Jason C Woods
- Cincinnati Bronchopulmonary Dysplasia Center.,Center for Pulmonary Imaging Research.,Department of Radiology, and.,Division of Pulmonary Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio; and.,Department of Pediatrics and.,Department of Radiology, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Paul S Kingma
- The Perinatal Institute.,Cincinnati Bronchopulmonary Dysplasia Center.,Center for Pulmonary Imaging Research.,Department of Radiology, and.,Division of Pulmonary Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio; and.,Department of Pediatrics and
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25
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Vanhaverbeke K, Van Eyck A, Van Hoorenbeeck K, De Winter B, Snoeckx A, Mulder T, Verhulst S. Lung imaging in bronchopulmonary dysplasia: a systematic review. Respir Med 2020; 171:106101. [DOI: 10.1016/j.rmed.2020.106101] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 07/20/2020] [Accepted: 07/26/2020] [Indexed: 01/19/2023]
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26
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Critser PJ, Higano NS, Lang SM, Kingma PS, Fleck RJ, Hirsch R, Taylor MD, Woods JC. Cardiovascular magnetic resonance imaging derived septal curvature in neonates with bronchopulmonary dysplasia associated pulmonary hypertension. J Cardiovasc Magn Reson 2020; 22:50. [PMID: 32698897 PMCID: PMC7376717 DOI: 10.1186/s12968-020-00643-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Accepted: 05/29/2020] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Bronchopulmonary dysplasia (BPD) associated with pulmonary hypertension (PH) is a significant source of morbidity and mortality in premature infants. Recent advances have allowed the use of cardiovascular magnetic resonance (CMR) in the assessment of respiratory and cardiac disease in infants with BPD. In adults and older pediatric patients, decreased CMR interventricular septal curvature correlates with increased mean pulmonary artery pressure and pulmonary vascular resistance. The current study sought to determine the relationship of CMR derived septal curvature in neonates with BPD and BPD-PH with a need for PH therapy. METHODS Forty moderate or severe BPD and 12 mild BPD or control infants were imaged without contrast between 38 and 47 weeks post-menstrual age on a neonatal-sized, neonatal intensive care unit-sited 1.5 T CMR scanner. CMR indices including eccentricity index (CMR-EI) and septal curvature were measured and compared to BPD severity and clinical outcomes including hospital length of stay (LOS), duration of respiratory support, respiratory support level at discharge and PH therapy. RESULTS CMR-EI was directly associated and septal curvature was inversely associated with BPD severity. In a univariate analysis, CMR-EI and septal curvature were associated with increased hospital LOS, duration of respiratory support, respiratory support at hospital discharge, and need for PH therapy. In multivariable analysis CMR-EI was associated with hospital LOS and duration of respiratory support and septal curvature was associated with respiratory support at hospital discharge. Septal curvature was the only clinical or CMR variable associated with need for PH therapy (R2 = 0.66, p = 0.0014) in multivariable analysis demonstrating improved discrimination beyond CMR-EI. CONCLUSIONS CMR derived septal curvature correlates significantly with clinical outcomes including hospital LOS, duration of respiratory support, respiratory support level at hospital discharge, and PH therapy in neonates with BPD and BPD-PH. Further, CMR derived septal curvature demonstrated improved discrimination of need for PH therapy and respiratory support at discharge compared to clinical variables and other CMR indices, supporting septal curvature as a non-invasive marker of PH in this population with potential to guide management strategies.
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Affiliation(s)
- Paul J Critser
- Heart Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
- Center for Pulmonary Imaging Research, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Nara S Higano
- Center for Pulmonary Imaging Research, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Sean M Lang
- Heart Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, 45229, USA
| | - Paul S Kingma
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, 45229, USA
- Division of Neonatology and Pulmonary Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Robert J Fleck
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, 45229, USA
- Department of Radiology, Cincinnati Children's Hospital Medical Center, 3333 Burnet Avenue, ML 5033, Cincinnati, OH, 45229, USA
| | - Russel Hirsch
- Heart Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, 45229, USA
| | - Michael D Taylor
- Heart Institute, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, 45229, USA
| | - Jason C Woods
- Center for Pulmonary Imaging Research, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA.
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH, 45229, USA.
- Department of Radiology, Cincinnati Children's Hospital Medical Center, 3333 Burnet Avenue, ML 5033, Cincinnati, OH, 45229, USA.
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27
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Torres ER, Tumey TA, Dean DC, Kassahun-Yimer W, Lopez-Lambert ED, Hitchcock ME. Non-pharmacological strategies to obtain usable magnetic resonance images in non-sedated infants: Systematic review and meta-analysis. Int J Nurs Stud 2020; 106:103551. [PMID: 32294563 DOI: 10.1016/j.ijnurstu.2020.103551] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 02/12/2020] [Accepted: 02/14/2020] [Indexed: 10/24/2022]
Abstract
BACKGROUND Although the use of sedation is commonly practiced to keep infants still while receiving magnetic resonance imaging, non-pharmacological strategies are a potential alternative. OBJECTIVES The purpose of this study was to determine the success rate of obtaining usable magnetic resonance images in infants with the sole use of non-pharmacological strategies. DESIGN Systematic literature review and meta-analysis SETTING: A search was conducted in PubMed, CINAHL and Cochrane Library. PARTICIPANTS Human infants from birth to 24 months of age who did not receive any sedation or anesthesia during magnetic resonance imaging METHOD: Articles that reported the success rate of obtaining usable images were included. RESULTS Of the 521 non-duplicate articles found, 58 articles were included in the systematic review with sample sizes ranging from 2-457, an average success rate of 87.8%, and an average scan time of 30 min. The most common non-pharmacological technique included feeding and swaddling infants before imaging to encourage infants to sleep during the scan. Meta-analysis performed on 53 articles comprising 3,410 infants found a success rate of 87%, but significant heterogeneity was found (I2 = 98.30%). It was more difficult to obtain usable images solely with non-pharmacological techniques if infants were critically ill or a structural magnetic resonance imaging of the brain was required. CONCLUSION Non-pharmacological techniques are effective for obtaining usable magnetic resonance imaging scans in most but not all infants. Tweetable abstract: Non-pharmacological techniques are effective for obtaining usable magnetic resonance imaging scans in most infants.
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Affiliation(s)
- Elisa R Torres
- School of Nursing, University of Mississippi Medical Center, 2500 North State Street, Jackson 39216, MS, United States.
| | - Tyler A Tumey
- Burrell College of Osteopathic Medicine, 3501 Arrowhead Dr Las Cruces, NM 88001, United States.
| | - Douglas C Dean
- Waisman Center, University of Wisconsin-Madison, 1500 Highland Ave, Madison WI 53705, United States.
| | - Wondwosen Kassahun-Yimer
- Department of Data Science, University of Mississippi Medical Center, School of Population Health,2500 North State Street, Jackson, MS 39216, United States.
| | - Eloise D Lopez-Lambert
- School of Nursing, University of Mississippi Medical Center, 2500 North State Street, Jackson 39216, MS, United States
| | - Mary E Hitchcock
- Ebling Library, University of Wisconsin-Madison, 750 Highland Ave, Madison WI 53705, United States.
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28
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Critser PJ, Higano NS, Tkach JA, Olson ES, Spielberg DR, Kingma PS, Fleck RJ, Lang SM, Moore RA, Taylor MD, Woods JC. Cardiac Magnetic Resonance Imaging Evaluation of Neonatal Bronchopulmonary Dysplasia-associated Pulmonary Hypertension. Am J Respir Crit Care Med 2020; 201:73-82. [PMID: 31539272 PMCID: PMC6938152 DOI: 10.1164/rccm.201904-0826oc] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Accepted: 09/19/2019] [Indexed: 12/25/2022] Open
Abstract
Rationale: Patients with bronchopulmonary dysplasia (BPD)-associated pulmonary hypertension (PH) have increased morbidity and mortality. Noninvasive assessment relies on echocardiograms (echos), which are technically challenging in this population. Improved assessment could augment decisions regarding PH therapies.Objectives: We hypothesized that neonatal cardiac magnetic resonance imaging (MRI) will correlate with BPD severity and predict short-term clinical outcomes, including need for PH therapies for infants with BPD.Methods: A total of 52 infants (31 severe BPD, 9 moderate BPD, and 12 with either mild or no BPD) were imaged between 39 and 47 weeks postmenstrual age on a neonatal-sized, neonatal ICU-sited 1.5-T magnetic resonance (MR) scanner. MR left ventricular eccentricity index (EI), main pulmonary artery-to-aorta (PA/AO) diameter ratio, and pulmonary arterial blood flow were determined. Echos obtained for clinical indications were reviewed. MRI and echo indices were compared with BPD severity and clinical outcomes, including length of stay (LOS), duration of respiratory support, respiratory support at discharge, and PH therapy.Measurements and Main Results: PA/AO ratio increased with BPD severity. Increased PA/AO ratio, MR-EI, and echo-EIs were associated with increased LOS and duration of respiratory support. No correlation was seen between pulmonary arterial blood flow and BPD outcomes. Controlling for gestational age, birth weight, and BPD severity, MR-EI was associated with LOS and duration of respiratory support. Increased PA/AO ratio and MR-EI were associated with PH therapy during hospitalization and at discharge.Conclusions: MRI can provide important image-based measures of cardiac morphology that relate to disease severity and clinical outcomes in neonates with BPD.
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Affiliation(s)
| | - Nara S. Higano
- Center for Pulmonary Imaging Research
- Division of Pulmonary Medicine
| | | | - Emilia S. Olson
- Center for Pulmonary Imaging Research
- Department of Radiology, and
| | - David R. Spielberg
- Department of Pediatrics, Baylor College of Medicine, Houston, Texas
- Pulmonary Medicine Service, Texas Children’s Hospital, Houston, Texas; and
| | - Paul S. Kingma
- Division of Neonatology and Pulmonary Biology, Cincinnati Children’s Hospital Medical Center, Cincinnati, Ohio
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Robert J. Fleck
- Department of Radiology, and
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Sean M. Lang
- Division of Cardiology
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Ryan A. Moore
- Division of Cardiology
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Michael D. Taylor
- Division of Cardiology
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Jason C. Woods
- Center for Pulmonary Imaging Research
- Division of Pulmonary Medicine
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, Ohio
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29
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Hahn AD, Malkus A, Kammerman J, Higano N, Walkup L, Woods J, Fain SB. Characterization of R 2 ∗ and tissue density in the human lung: Application to neonatal imaging in the intensive care unit. Magn Reson Med 2019; 84:920-927. [PMID: 31855294 DOI: 10.1002/mrm.28137] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Revised: 11/26/2019] [Accepted: 11/26/2019] [Indexed: 02/06/2023]
Abstract
PURPOSE Novel demonstration of R 2 ∗ and tissue density estimation in infant lungs using 3D ultrashort echo time MRI. Differences between adult and neonates with no clinical indication of lung pathology is explored, as well as relationships between parameter estimates and gravitationally dependent position and lung inflation state. This provides a tool for probing physiologic processes that may be relevant to pulmonary disease and progression in newborns. METHODS R 2 ∗ and tissue density were estimated in a phantom consisting of standards allowing for ground truth comparisons and in human subjects (N = 5 infants, N = 4 adults, no clinical indication of lung dysfunction) using a 3D radial multiecho ultrashort echo time MRI sequence. Whole lung averages were compared between infants and adults. Dependence of the metrics on anterior-posterior position as well as between end-tidal inspiration and expiration were explored, in addition to the general relationship between R 2 ∗ and tissue density. RESULTS Estimates in the phantom did not differ significantly from ground truth. Neonates had significantly lower mean R 2 ∗ (P = .006) and higher mean tissue density (P = 1.5e-5) than adults. Tissue density and R 2 ∗ were both significantly dependent on anterior-posterior position and lung inflation state (P < .005). An overall inverse relationship was found between R 2 ∗ and tissue density, which was similar in both neonates and adults. CONCLUSION Estimation of tissue density and R 2 ∗ in free breathing, nonsedated, neonatal patients is feasible using multiecho ultrashort echo time MRI. R 2 ∗ was no different between infants and adults when matched for tissue density, although density of lung parenchyma was, on average, lower in adults than neonates.
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Affiliation(s)
- Andrew D Hahn
- Department of Medical Physics, University of Wisconsin, Madison, Wisconsin
| | - Annelise Malkus
- Department of Medical Physics, University of Wisconsin, Madison, Wisconsin
| | - Jeffery Kammerman
- Department of Medical Physics, University of Wisconsin, Madison, Wisconsin
| | - Nara Higano
- Center for Pulmonary Imaging Research, Division of Pulmonary Medicine and Department of Radiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Laura Walkup
- Center for Pulmonary Imaging Research, Division of Pulmonary Medicine and Department of Radiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Jason Woods
- Center for Pulmonary Imaging Research, Division of Pulmonary Medicine and Department of Radiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio.,Department of Pediatrics, University of Cincinnati, College of Medicine, Cincinnati, Ohio
| | - Sean B Fain
- Department of Medical Physics, University of Wisconsin, Madison, Wisconsin.,Department of Radiology, University of Wisconsin, Madison, Wisconsin.,Department of Biomedical Engineering, University of Wisconsin, Madison, Wisconsin
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30
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Friedlander Y, Zanette B, Lindenmaier A, Sadanand S, Li D, Stirrat E, Couch M, Kassner A, Jankov RP, Santyr G. Chemical shift of
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Xe dissolved in red blood cells: Application to a rat model of bronchopulmonary dysplasia. Magn Reson Med 2019; 84:52-60. [DOI: 10.1002/mrm.28121] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Revised: 11/13/2019] [Accepted: 11/19/2019] [Indexed: 12/23/2022]
Affiliation(s)
- Yonni Friedlander
- Translational Medicine Program Hospital for Sick Children Toronto Ontario Canada
- Department of Medical Biophysics University of Toronto Toronto Ontario Canada
| | - Brandon Zanette
- Translational Medicine Program Hospital for Sick Children Toronto Ontario Canada
| | - Andras Lindenmaier
- Translational Medicine Program Hospital for Sick Children Toronto Ontario Canada
- Department of Medical Biophysics University of Toronto Toronto Ontario Canada
| | - Siddharth Sadanand
- Translational Medicine Program Hospital for Sick Children Toronto Ontario Canada
| | - Daniel Li
- Translational Medicine Program Hospital for Sick Children Toronto Ontario Canada
| | - Elaine Stirrat
- Translational Medicine Program Hospital for Sick Children Toronto Ontario Canada
| | - Marcus Couch
- Translational Medicine Program Hospital for Sick Children Toronto Ontario Canada
- Department of Medical Biophysics University of Toronto Toronto Ontario Canada
| | - Andrea Kassner
- Translational Medicine Program Hospital for Sick Children Toronto Ontario Canada
- Department of Medical Imaging University of Toronto Toronto Ontario Canada
| | - Robert P. Jankov
- Molecular Biomedicine Program Children’s Hospital of Eastern Ontario Research Institute Ottawa Ontario Canada
- Department of Cellular and Molecular Medicine University of Ottawa Ottawa Ontario Canada
| | - Giles Santyr
- Translational Medicine Program Hospital for Sick Children Toronto Ontario Canada
- Department of Medical Biophysics University of Toronto Toronto Ontario Canada
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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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Yoder LM, Higano NS, Schapiro AH, Fleck RJ, Hysinger EB, Bates AJ, Kingma PS, Merhar SL, Fain SB, Woods JC. Elevated lung volumes in neonates with bronchopulmonary dysplasia measured via MRI. Pediatr Pulmonol 2019; 54:1311-1318. [PMID: 31134768 DOI: 10.1002/ppul.24378] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Revised: 03/11/2019] [Accepted: 05/01/2019] [Indexed: 01/31/2023]
Abstract
BACKGROUND Bronchopulmonary dysplasia (BPD) is a chronic lung disease of prematurity defined by requirement for respiratory support at 36 weeks postmenstrual age (PMA), but structural sequelae like lung hyperinflation are often not quantified. Quiet-breathing, nonsedated magnetic resonance imaging (MRI) allows tomographic quantification of lung volumes and densities. We hypothesized that functional residual capacity (FRC) and intrapleural volume (IV) are increased in BPD and correlate with qualitative radiological scoring of hyperinflation. METHODS Ultrashort echo time (UTE) MRI of 17 neonates (acquired at ~39 weeks PMA) were reconstructed at end-expiration and end-inspiration via the time course of the k0 point in k-space. Images were segmented to determine total lung, tidal, parenchymal tissue, and vascular tissue volumes. FRC was calculated by subtracting parenchymal and vascular tissue volumes from IV. Respiratory rate (RR) was calculated via the UTE respiratory waveform, yielding estimates of minute ventilation when combined with tidal volumes (TVs). Two radiologists scored hyperinflation on the MR images. RESULTS IV at FRC increased in BPD: for control, mild, and severe (patients the median volumes were 32.8, 33.5, and 50.9 mL/kg, respectively. TV (medians: 2.21, 3.64, and 4.84 mL/kg) and minute ventilation (medians: 493, 750, and 991 mL/min) increased with increasing severity of BPD (despite decreasing RR, medians: 75.6, 63.0, and 56.1 breaths/min). FRC increased with increasing severity of BPD (39.3, 38.3, and 56.0 mL, respectively). Findings were consistent with increased hyperinflation scored by radiologists. CONCLUSIONS This study demonstrates that UTE MRI can quantify hyperinflation in neonatal BPD and that lung volumes significantly increase with disease severity.
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Affiliation(s)
- Lauren M Yoder
- University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Nara S Higano
- Center for Pulmonary Imaging Research, Division of Pulmonary Medicine and Department of Radiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio.,Department of Radiology, University of Cincinnati College of Medicine, Cincinnati, Ohio
| | - Andrew H Schapiro
- Department of Radiology, University of Cincinnati College of Medicine, Cincinnati, Ohio.,Department of Radiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Robert J Fleck
- Department of Radiology, University of Cincinnati College of Medicine, Cincinnati, Ohio.,Department of Radiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Erik B Hysinger
- Division of Pulmonary Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio.,Department of Pediatrics, College of Medicine, University of Cincinnati, Cincinnati, Ohio
| | - Alister J Bates
- Center for Pulmonary Imaging Research, Division of Pulmonary Medicine and Department of Radiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio.,Department of Radiology, University of Cincinnati College of Medicine, Cincinnati, Ohio.,Department of Radiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Paul S Kingma
- Division of Pulmonary Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio.,Department of Pediatrics, College of Medicine, University of Cincinnati, Cincinnati, Ohio.,Division of Neonatology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Stephanie L Merhar
- Division of Pulmonary Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio.,Department of Pediatrics, College of Medicine, University of Cincinnati, Cincinnati, Ohio
| | - Sean B Fain
- Division of Neonatology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio.,Department of Medical Physics, University of Wisconsin, Madison, Wisconsin.,Department of Radiology, University of Wisconsin, Madison, Wisconsin
| | - Jason C Woods
- Center for Pulmonary Imaging Research, Division of Pulmonary Medicine and Department of Radiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio.,Department of Radiology, University of Cincinnati College of Medicine, Cincinnati, Ohio.,Department of Radiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
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Roach DJ, Ruangnapa K, Fleck RJ, Rattan MS, Zhang Y, Hossain MM, Guilbert TW, Woods JC. Structural lung abnormalities on computed tomography correlate with asthma inflammation in bronchoscopic alveolar lavage fluid. J Asthma 2019; 57:968-979. [PMID: 31187669 DOI: 10.1080/02770903.2019.1622714] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Objective: Image scoring systems have been developed to assess the severity of specific lung abnormalities in patients diagnosed with various pulmonary diseases except for asthma. A comprehensive asthma imaging scoring system may identify specific abnormalities potentially linking these to inflammatory phenotypes.Methods: Computed tomography (CT) images of 88 children with asthma (50 M/38 F, mean age 7.8 ± 5.4 years) acquired within 12 months of bronchoscopic alveolar lavage fluid (BALF) sampling that assessed airway inflammation cell types were reviewed along with CT images of 49 controls (27 M/22 F, mean age 3.4 ± 2.2 years). Images were scored using a comprehensive scoring system to quantify bronchiectasis (BR), bronchial wall thickening (BWT), ground glass opacity, mucus plugging (MP), consolidations, linear densities (LD), and air trapping (AT). Each category was scored 0-2 in each of six lobar regions (with lingula separated from left upper lobe).Results: Absolute average overall scores of the controls and children with asthma were 0.72 ± 1.59 and 5.39 ± 5.83, respectively (P < 0.0001). Children with asthma scored significantly higher for BR (N = 20, 0.33 ± 0.80, P = 0.0002), BWT (N = 28, 0.72 ± 1.40, P < 0.0001), MP (N = 28, 0.37 ± 1.12, P = 0.0052), consolidation (N = 31, 0.67 ± 1.22, P < 0.0001), LD (N = 58, 1.12 ± 1.44, P < 0.0001), and AT (N = 52, 1.78 ± 2.31, P < 0.0001). There was a significant difference between the BR score of children with positive inflammatory response in BALF (N = 53) and those who were negative for airway inflammation cells (0.14 ± 0.36, P = 0.040).Conclusions: Significant lung structural abnormalities were readily identified on CT of children with asthma, with image differentiation of those with an inflammatory response on BALF. Chest imaging demonstrates potential as a noninvasive clinical tool for additional characterization of asthma phenotypes.
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Affiliation(s)
- David J Roach
- Center for Pulmonary Imaging Research, Division of Pulmonary Medicine and Department of Radiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA.,Department of Pulmonary Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Kanokpan Ruangnapa
- Department of Pediatrics, Faculty of Medicine, Prince of Songkla University, Hat-Yai, Songkhla, Thailand
| | - Robert J Fleck
- Department of Radiology, Cincinnati Children's Hospital Medical Center, University of Cincinnati, Cincinnati, OH, USA
| | - Mantosh S Rattan
- Department of Radiology, Cincinnati Children's Hospital Medical Center, University of Cincinnati, Cincinnati, OH, USA
| | - Yin Zhang
- Department of Biostatistics and Epidemiology, Cincinnati Children's Hospital, Cincinnati, OH, USA
| | - Md Monir Hossain
- Department of Biostatistics and Epidemiology, Cincinnati Children's Hospital, Cincinnati, OH, USA
| | - Theresa W Guilbert
- Department of Pulmonary Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA.,Department of Pediatrics, University of Cincinnati, 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.,Department of Pulmonary Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA.,Department of Radiology, Cincinnati Children's Hospital Medical Center, University of Cincinnati, Cincinnati, OH, USA.,Department of Pediatrics, University of Cincinnati, Cincinnati, OH, USA
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Förster K, Ertl-Wagner B, Ehrhardt H, Busen H, Sass S, Pomschar A, Naehrlich L, Schulze A, Flemmer AW, Hübener C, Eickelberg O, Theis F, Dietrich O, Hilgendorff A. Altered relaxation times in MRI indicate bronchopulmonary dysplasia. Thorax 2019; 75:184-187. [PMID: 31048507 DOI: 10.1136/thoraxjnl-2018-212384] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Revised: 03/28/2019] [Accepted: 04/01/2019] [Indexed: 11/04/2022]
Abstract
We developed a MRI protocol using transverse (T2) and longitudinal (T1) mapping sequences to characterise lung structural changes in preterm infants with bronchopulmonary dysplasia (BPD). We prospectively enrolled 61 infants to perform 3-Tesla MRI of the lung in quiet sleep. Statistical analysis was performed using logistic Group Lasso regression and logistic regression. Increased lung T2 relaxation time and decreased lung T1 relaxation time indicated BPD yielding an area under the curve (AUC) of 0.80. Results were confirmed in an independent study cohort (AUC 0.75) and mirrored by lung function testing, indicating the high potential for MRI in future BPD diagnostics. TRIAL REGISTRATION: DRKS00004600.
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Affiliation(s)
- Kai Förster
- Department of Neonatology, Perinatal Center Grosshadern, Dr von Hauner Children's Hospital, Ludwig Maximilian University of Munich, Munich, Germany.,Comprehensive Pneumology Center, German Lung Research Center (DZL), Helmholtz Zentrum München, Munich, Germany
| | - Birgit Ertl-Wagner
- Department of Radiology, German Lung Research Center (DZL), University Hospital, Ludwig Maximilian University of Munich, Munich, Germany
| | - Harald Ehrhardt
- Department of General Pediatrics and Neonatology, German Center for Lung Research (DZL), Justus-Liebig-University, Giessen, Germany
| | - Hannah Busen
- Institute of Computational Biology, Helmholtz Zentrum München, Munich, Germany
| | - Steffen Sass
- Institute of Computational Biology, Helmholtz Zentrum München, Munich, Germany
| | - Andreas Pomschar
- Department of Radiology, German Lung Research Center (DZL), University Hospital, Ludwig Maximilian University of Munich, Munich, Germany
| | - Lutz Naehrlich
- Department of General Pediatrics and Neonatology, German Center for Lung Research (DZL), Justus-Liebig-University, Giessen, Germany
| | - Andreas Schulze
- Department of Neonatology, Perinatal Center Grosshadern, Dr von Hauner Children's Hospital, Ludwig Maximilian University of Munich, Munich, Germany
| | - Andreas W Flemmer
- Department of Neonatology, Perinatal Center Grosshadern, Dr von Hauner Children's Hospital, Ludwig Maximilian University of Munich, Munich, Germany
| | - Christoph Hübener
- Department of Obstetrics and Gynecology, Perinatal Center Grosshadern, University Hospital, Ludwig Maximilian University of Munich, Munich, Germany
| | - Oliver Eickelberg
- Comprehensive Pneumology Center, German Lung Research Center (DZL), Helmholtz Zentrum München, Munich, Germany.,Division of Respiratory Sciences and Critical Care Medicine, University of Colorado at Denver, Anschutz Medical Campus, Aurora, Colorado, USA
| | - Fabian Theis
- Institute of Computational Biology, Helmholtz Zentrum München, Munich, Germany.,Department of Mathematics, Technical University of Munich, Munich, Germany
| | - Olaf Dietrich
- Department of Radiology, German Lung Research Center (DZL), University Hospital, Ludwig Maximilian University of Munich, Munich, Germany
| | - Anne Hilgendorff
- Department of Neonatology, Perinatal Center Grosshadern, Dr von Hauner Children's Hospital, Ludwig Maximilian University of Munich, Munich, Germany .,Comprehensive Pneumology Center, German Lung Research Center (DZL), Helmholtz Zentrum München, Munich, Germany
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Kjellberg M, Sanchez-Crespo A, Jonsson B. Ten-year-old children with a history of bronchopulmonary dysplasia have regional abnormalities in ventilation perfusion matching. Pediatr Pulmonol 2019; 54:602-609. [PMID: 30887678 DOI: 10.1002/ppul.24273] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Accepted: 01/16/2019] [Indexed: 01/25/2023]
Abstract
AIM The ratio of ventilation to blood flow is an important determinant for regional gas exchange in the lung and hypoxemia is one of the clinical hallmarks in infants with bronchopulmonary dysplasia (BPD). We have previously demonstrated ventilation/perfusion ratio (V/Q) abnormalities in infants with BPD at 36 weekś postconceptional age. The status of V/Q matching in older children with a history of BPD in infancy is unknown. In this study, we examined if 10-year-old children with a history of BPD had V/Q impairments. METHODS Three-dimensional V/Q-scintigraphy (SPECT) was performed in 26 children. RESULTS In the BPD group, lung volume with mismatch, (V>Q) was larger compared to areas with reverse mismatch (Q>V), 26.2% and 11.8%, respectively, implying that perfusion defects contribute more than ventilation defects in the V/Q mismatch. Also, the mean fractional distribution of V and Q to V/Q in children with BPD was reduced compared to healthy children, 31% and 51% compared to 64% and 89%, respectively (P < 0.01). CONCLUSION At 10 years of age children with a history of BPD had ventilation/perfusion abnormalities, with prominent perfusion defects. These V/Q abnormalities suggest the presence of residual alveolar-capillary impairment.
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Affiliation(s)
- Malin Kjellberg
- Institute of Women's and Children's Health, Department of Neonatology, Karolinska Institute and University Hospital, Stockholm, Sweden
| | - Alejandro Sanchez-Crespo
- Institution of Oncology-Pathology, Karolinska Institute, Stockholm, Sweden.,Department of Medical Radiation Physics and Nuclear Medicine, Karolinska Univeristy Hospital, Stockholm, Sweden
| | - Baldvin Jonsson
- Institute of Women's and Children's Health, Department of Neonatology, Karolinska Institute and University Hospital, Stockholm, Sweden
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Structural and Functional Pulmonary Magnetic Resonance Imaging in Pediatrics-From the Neonate to the Young Adult. Acad Radiol 2019; 26:424-430. [PMID: 30228041 DOI: 10.1016/j.acra.2018.08.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2017] [Revised: 06/11/2018] [Accepted: 08/21/2018] [Indexed: 12/25/2022]
Abstract
The clinical imaging modalities available to investigate pediatric pulmonary conditions such as bronchopulmonary dysplasia, cystic fibrosis, and asthma are limited primarily to chest x-ray radiograph and computed tomography. As the challenges that historically limited the application of magnetic resonance imaging (MRI) to the lung have been overcome, its clinical potential has greatly expanded. In this review article, recent advances in pulmonary MRI including ultrashort echo time and hyperpolarized-gas MRI techniques are discussed with an emphasis on pediatric research and translational applications.
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Pryhuber GS. Renewed Promise of Nonionizing Radiation Imaging for Chronic Lung Disease in Preterm Infants. Am J Respir Crit Care Med 2018; 198:1248-1249. [PMID: 29944841 DOI: 10.1164/rccm.201805-0963ed] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Affiliation(s)
- Gloria S Pryhuber
- 1 Department of Pediatrics and.,2 Department of Environmental Medicine University of Rochester Medical Center Rochester, New York
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Higano NS, Spielberg DR, Fleck RJ, Schapiro AH, Walkup LL, Hahn AD, Tkach JA, Kingma PS, Merhar SL, Fain SB, Woods JC. Neonatal Pulmonary Magnetic Resonance Imaging of Bronchopulmonary Dysplasia Predicts Short-Term Clinical Outcomes. Am J Respir Crit Care Med 2018; 198:1302-1311. [PMID: 29790784 PMCID: PMC6290936 DOI: 10.1164/rccm.201711-2287oc] [Citation(s) in RCA: 91] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Accepted: 05/23/2018] [Indexed: 02/07/2023] Open
Abstract
RATIONALE Bronchopulmonary dysplasia (BPD) is a serious neonatal pulmonary condition associated with premature birth, but the underlying parenchymal disease and trajectory are poorly characterized. The current National Institute of Child Health and Human Development (NICHD)/NHLBI definition of BPD severity is based on degree of prematurity and extent of oxygen requirement. However, no clear link exists between initial diagnosis and clinical outcomes. OBJECTIVES We hypothesized that magnetic resonance imaging (MRI) of structural parenchymal abnormalities will correlate with NICHD-defined BPD disease severity and predict short-term respiratory outcomes. METHODS A total of 42 neonates (20 severe BPD, 6 moderate, 7 mild, 9 non-BPD control subjects; 40 ± 3-wk postmenstrual age) underwent quiet-breathing structural pulmonary MRI (ultrashort echo time and gradient echo) in a neonatal ICU-sited, neonatal-sized 1.5 T scanner, without sedation or respiratory support unless already clinically prescribed. Disease severity was scored independently by two radiologists. Mean scores were compared with clinical severity and short-term respiratory outcomes. Outcomes were predicted using univariate and multivariable models, including clinical data and scores. MEASUREMENTS AND MAIN RESULTS MRI scores significantly correlated with severities and predicted respiratory support at neonatal ICU discharge (P < 0.0001). In multivariable models, MRI scores were by far the strongest predictor of respiratory support duration over clinical data, including birth weight and gestational age. Notably, NICHD severity level was not predictive of discharge support. CONCLUSIONS Quiet-breathing neonatal pulmonary MRI can independently assess structural abnormalities of BPD, describe disease severity, and predict short-term outcomes more accurately than any individual standard clinical measure. Importantly, this nonionizing technique can be implemented to phenotype disease, and has potential to serially assess efficacy of individualized therapies.
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Affiliation(s)
- Nara S. Higano
- Center for Pulmonary Imaging Research, Division of Pulmonary Medicine and Department of Radiology
| | - David R. Spielberg
- Center for Pulmonary Imaging Research, Division of Pulmonary Medicine and Department of Radiology
| | | | | | - Laura L. Walkup
- Center for Pulmonary Imaging Research, Division of Pulmonary Medicine and Department of Radiology
| | | | | | - Paul S. Kingma
- Division of Neonatology and Pulmonary Biology, Cincinnati Children’s Hospital, Cincinnati, Ohio; and
| | - Stephanie L. Merhar
- Division of Neonatology and Pulmonary Biology, Cincinnati Children’s Hospital, Cincinnati, Ohio; and
| | - Sean B. Fain
- Department of Medical Physics and
- Department of Radiology, University of Wisconsin–Madison, Madison, Wisconsin
| | - Jason C. Woods
- Center for Pulmonary Imaging Research, Division of Pulmonary Medicine and Department of Radiology
- Department of Radiology, and
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Dournes G, Yazbek J, Benhassen W, Benlala I, Blanchard E, Truchetet ME, Macey J, Berger P, Laurent F. 3D ultrashort echo time MRI of the lung using stack-of-spirals and spherical k-Space coverages: Evaluation in healthy volunteers and parenchymal diseases. J Magn Reson Imaging 2018; 48:1489-1497. [PMID: 30203889 DOI: 10.1002/jmri.26212] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Accepted: 05/18/2018] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Ultrashort echo time (UTE) has been shown to improve lung MRI quality in three dimensions. The evaluation of 3D-UTE stack-of-spirals VIBE (3D-USV) sequence for parenchymal diseases and a comparison of performance with that of a spherical mode of acquisition is needed. PURPOSE To assess MRI quality using a prototypical 3D-USV sequence and to compare performance with that of a spherical acquisition using Pointwise Encoding Time Reduction with Radial Acquisition (PETRA). STUDY TYPE Monocenter, prospective. POPULATION Twelve healthy volunteers and 32 adult patients with either cystic fibrosis (CF; n = 16) or interstitial lung disease (ILD; n = 16). FIELD STRENGTH/SEQUENCE Both free-breathing 3D-USV and PETRA were completed at 1.5T. ASSESSMENT In healthy volunteers, visual analysis of imaging quality was scored using a Likert scale. Quantitative evaluation of apparent signal ratio (Sr) and contrast ratio (Cr) was measured. Patients with CF and ILD completed both computed tomography (CT) and MRI. Depiction of structural alterations was assessed using dedicated clinical scores. All evaluations were done in consensus by two readers. STATISTICAL TESTS Comparison of means was assessed using the Wilcoxon signed rank test. Concordance and agreement between CT and MRI were assessed using the intraclass correlation coefficient (ICC) and kappa test. RESULTS In controls, 3D-USV yielded lower artifacts owing to better automatic respiratory synchronization than PETRA (P < 0.001). However, Sr and Cr of 3D-USV were found significantly lower by 2.25- and 2.36-fold, respectively (P < 0.001). In patients, 3D-USV and PETRA showed comparable performances to assess airway severity in CF (Bhalla score, ICC = 0.89 and ICC = 0.92, respectively) and presence of structural alterations in ILD such as honeycombing (kappa = 0.68 and kappa = 0.69, respectively). DATA CONCLUSION 3D-USV enables high-resolution morphological imaging of the lung without need of an external device to compensate respiratory motions. Automation and robustness of the method may facilitate clinical application for both airway and interstitial lung investigations. LEVEL OF EVIDENCE 2 Technical Efficacy: Stage 1 J. Magn. Reson. Imaging 2018;48:1489-1497.
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Affiliation(s)
- Gaël Dournes
- University of Bordeaux, Centre de Recherche Cardio-Thoracique de Bordeaux, Bordeaux, France.,Inserm, Centre de Recherche Cardio-Thoracique de Bordeaux, Bordeaux, France.,CHU de Bordeaux, Service d'Imagerie Thoracique et Cardiovasculaire, Service des Maladies Respiratoires, Service de Rhumatologie, Service d'Exploration Fonctionnelle Respiratoire, Pessac, France
| | - Joseph Yazbek
- CHU de Bordeaux, Service d'Imagerie Thoracique et Cardiovasculaire, Service des Maladies Respiratoires, Service de Rhumatologie, Service d'Exploration Fonctionnelle Respiratoire, Pessac, France
| | | | - Ilyes Benlala
- University of Bordeaux, Centre de Recherche Cardio-Thoracique de Bordeaux, Bordeaux, France.,Inserm, Centre de Recherche Cardio-Thoracique de Bordeaux, Bordeaux, France.,CHU de Bordeaux, Service d'Imagerie Thoracique et Cardiovasculaire, Service des Maladies Respiratoires, Service de Rhumatologie, Service d'Exploration Fonctionnelle Respiratoire, Pessac, France
| | - Elodie Blanchard
- CHU de Bordeaux, Service d'Imagerie Thoracique et Cardiovasculaire, Service des Maladies Respiratoires, Service de Rhumatologie, Service d'Exploration Fonctionnelle Respiratoire, Pessac, France
| | - Marie-Elise Truchetet
- CHU de Bordeaux, Service d'Imagerie Thoracique et Cardiovasculaire, Service des Maladies Respiratoires, Service de Rhumatologie, Service d'Exploration Fonctionnelle Respiratoire, Pessac, France
| | - Julie Macey
- CHU de Bordeaux, Service d'Imagerie Thoracique et Cardiovasculaire, Service des Maladies Respiratoires, Service de Rhumatologie, Service d'Exploration Fonctionnelle Respiratoire, Pessac, France
| | - Patrick Berger
- University of Bordeaux, Centre de Recherche Cardio-Thoracique de Bordeaux, Bordeaux, France.,Inserm, Centre de Recherche Cardio-Thoracique de Bordeaux, Bordeaux, France.,CHU de Bordeaux, Service d'Imagerie Thoracique et Cardiovasculaire, Service des Maladies Respiratoires, Service de Rhumatologie, Service d'Exploration Fonctionnelle Respiratoire, Pessac, France
| | - François Laurent
- University of Bordeaux, Centre de Recherche Cardio-Thoracique de Bordeaux, Bordeaux, France.,Inserm, Centre de Recherche Cardio-Thoracique de Bordeaux, Bordeaux, France.,CHU de Bordeaux, Service d'Imagerie Thoracique et Cardiovasculaire, Service des Maladies Respiratoires, Service de Rhumatologie, Service d'Exploration Fonctionnelle Respiratoire, Pessac, France
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Guo F, Capaldi D, Kirby M, Sheikh K, Svenningsen S, McCormack DG, Fenster A, Parraga G. Development of a pulmonary imaging biomarker pipeline for phenotyping of chronic lung disease. J Med Imaging (Bellingham) 2018; 5:026002. [PMID: 29963580 DOI: 10.1117/1.jmi.5.2.026002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Accepted: 06/14/2018] [Indexed: 12/22/2022] Open
Abstract
We designed and generated pulmonary imaging biomarker pipelines to facilitate high-throughput research and point-of-care use in patients with chronic lung disease. Image processing modules and algorithm pipelines were embedded within a graphical user interface (based on the .NET framework) for pulmonary magnetic resonance imaging (MRI) and x-ray computed-tomography (CT) datasets. The software pipelines were generated using C++ and included: (1) inhaled He3/Xe129 MRI ventilation and apparent diffusion coefficients, (2) CT-MRI coregistration for lobar and segmental ventilation and perfusion measurements, (3) ultrashort echo-time H1 MRI proton density measurements, (4) free-breathing Fourier-decomposition H1 MRI ventilation/perfusion and free-breathing H1 MRI specific ventilation, (5) multivolume CT and MRI parametric response maps, and (6) MRI and CT texture analysis and radiomics. The image analysis framework was implemented on a desktop workstation/tablet to generate biomarkers of regional lung structure and function related to ventilation, perfusion, lung tissue texture, and integrity as well as multiparametric measures of gas trapping and airspace enlargement. All biomarkers were generated within 10 min with measurement reproducibility consistent with clinical and research requirements. The resultant pulmonary imaging biomarker pipeline provides real-time and automated lung imaging measurements for point-of-care and high-throughput research.
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Affiliation(s)
- Fumin Guo
- University of Western Ontario, Robarts Research Institute, London, Ontario, Canada.,University of Western Ontario, Graduate Program in Biomedical Engineering, London, Ontario, Canada.,University of Toronto, Sunnybrook Research Institute, Toronto, Canada
| | - Dante Capaldi
- University of Western Ontario, Robarts Research Institute, London, Ontario, Canada.,University of Western Ontario, Department of Medical Biophysics, London, Ontario, Canada
| | - Miranda Kirby
- University of British Columbia, St. Paul's Hospital, Centre for Heart Lung Innovation, Vancouver, Canada
| | - Khadija Sheikh
- University of Western Ontario, Robarts Research Institute, London, Ontario, Canada
| | - Sarah Svenningsen
- University of Western Ontario, Robarts Research Institute, London, Ontario, Canada
| | - David G McCormack
- University of Western Ontario, Division of Respirology, Department of Medicine, London, Ontario, Canada
| | - Aaron Fenster
- University of Western Ontario, Robarts Research Institute, London, Ontario, Canada.,University of Western Ontario, Graduate Program in Biomedical Engineering, London, Ontario, Canada.,University of Western Ontario, Department of Medical Biophysics, London, Ontario, Canada
| | - Grace Parraga
- University of Western Ontario, Robarts Research Institute, London, Ontario, Canada.,University of Western Ontario, Graduate Program in Biomedical Engineering, London, Ontario, Canada.,University of Western Ontario, Department of Medical Biophysics, London, Ontario, Canada
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Higgins RD, Jobe AH, Koso-Thomas M, Bancalari E, Viscardi RM, Hartert TV, Ryan RM, Kallapur SG, Steinhorn RH, Konduri GG, Davis SD, Thebaud B, Clyman RI, Collaco JM, Martin CR, Woods JC, Finer NN, Raju TNK. Bronchopulmonary Dysplasia: Executive Summary of a Workshop. J Pediatr 2018; 197:300-308. [PMID: 29551318 PMCID: PMC5970962 DOI: 10.1016/j.jpeds.2018.01.043] [Citation(s) in RCA: 497] [Impact Index Per Article: 82.8] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Revised: 12/27/2017] [Accepted: 01/12/2018] [Indexed: 12/19/2022]
Affiliation(s)
- Rosemary D Higgins
- Pregnancy and Perinatology Branch, Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD), National Institutes of Health (NIH), Bethesda, MD.
| | - Alan H Jobe
- Department of Pediatrics, Cincinnati Children's Hospital Medical Center and University of Cincinnati, Cincinnati, OH
| | - Marion Koso-Thomas
- Pregnancy and Perinatology Branch, Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD), National Institutes of Health (NIH), Bethesda, MD
| | - Eduardo Bancalari
- Department of Pediatrics, University of Miami Miller School of Medicine, Miami, FL
| | - Rose M Viscardi
- Department of Pediatrics, University of Maryland Baltimore, Baltimore, MD
| | - Tina V Hartert
- Department of Medicine, Division of Allergy, Pulmonology and Critical Care Medicine, Vanderbilt University, Nashville, TN
| | - Rita M Ryan
- Department of Pediatrics, Medical University of South Carolina, Charleston, SC
| | - Suhas G Kallapur
- Divisions of Neonatology and Developmental Biology Professor of Pediatrics David Geffen School of Medicine at UCLA Mattel Children's Hospital UCLA, Los Angeles, CA
| | - Robin H Steinhorn
- Children's National Health System, Department of Pediatrics, Washington, DC
| | - Girija G Konduri
- Department of Pediatrics, Cardiovascular Research Center and Children's Research Institute, Medical College of Wisconsin, Milwaukee, WI
| | - Stephanie D Davis
- Section of Pediatric Pulmonology, Allergy and Sleep Medicine, Department of Pediatrics, Riley Hospital for Children, Indiana University School of Medicine, Indianapolis, IN
| | - Bernard Thebaud
- Department of Pediatrics, Children's Hospital of Eastern Ontario and Children's Hospital of Ontario Research Institute (CHEORI), Ontario, Canada; Sinclair Centre for Regenerative Medicine, Ottawa Hospital Research Institute (OHRI), Ontario, Canada; Department of Cellular and Molecular Biology, University of Ottawa, Ontario, Canada
| | - Ronald I Clyman
- Department of Pediatrics, University of California, San Francisco, San Francisco, CA; Cardiovascular Research Institute, University of California, San Francisco, San Francisco, CA
| | - Joseph M Collaco
- Eudowood Division of Pediatric Respiratory Sciences, Johns Hopkins Medical Institutions, Baltimore, MD
| | - Camilia R Martin
- Department of Neonatology and Division of Translational Research, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA
| | - Jason C Woods
- Department of Radiology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH
| | - Neil N Finer
- Department of Pediatrics, University of California at San Diego, San Diego, CA
| | - Tonse N K Raju
- Pregnancy and Perinatology Branch, Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD), National Institutes of Health (NIH), Bethesda, MD
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Abstract
Chronic respiratory morbidity is a common complication of premature birth, generally defined by the presence of bronchopulmonary dysplasia, both clinically and in trials of respiratory therapies. However, recent data have highlighted that bronchopulmonary dysplasia does not correlate with chronic respiratory morbidity in older children born preterm. Longitudinally evaluating pulmonary morbidity from early life through to childhood provides a more rational method of defining the continuum of chronic respiratory morbidity of prematurity, and offers new insights into the efficacy of neonatal respiratory interventions. The changing nature of preterm lung disease suggests that a multimodal approach using dynamic lung function assessment will be needed to assess the efficacy of a neonatal respiratory therapy and predict the long-term respiratory consequences of premature birth. Our aim is to review the literature regarding the long-term respiratory outcomes of neonatal respiratory strategies, the difficulties of assessing dynamic lung function in infants, and potential new solutions. Better measures are needed to predict chronic respiratory morbidity in survivors born prematurely http://ow.ly/1L3n30ihq9C
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Spielberg DR, Walkup LL, Stein JM, Crotty EJ, Rattan MS, Hossain MM, Brody AS, Woods JC. Quantitative CT scans of lung parenchymal pathology in premature infants ages 0-6 years. Pediatr Pulmonol 2018; 53:316-323. [PMID: 29266864 DOI: 10.1002/ppul.23921] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Accepted: 11/01/2017] [Indexed: 12/27/2022]
Abstract
BACKGROUND Bronchopulmonary dysplasia (BPD) is a common, heterogeneous disease in premature infants. We hypothesized that quantitative CT techniques could assess lung parenchymal heterogeneity in BPD patients across a broad age range and demonstrate how pathologies change over time. METHODS A cross-sectional, retrospective study of children age 0-6 years with non-contrast chest CT scans was conducted. BPD subjects met NICHD/NHLBI diagnostic criteria for BPD and were excluded for congenital lung/airway abnormalities or other known/suspected pulmonary diagnoses; control subjects were not premature and had normal CT scan findings. Radiologic opacities, lucencies, and spatial heterogeneity were quantified via: 1) thresholding using CT-attenuation (HU); 2) manual segmentation; and 3) Ochiai reader-scoring system. Clinical outcomes included BPD severity by NICHD/NHLBI criteria, respiratory support at NICU discharge, wheezing, and respiratory exacerbations. RESULTS Heterogeneity (standard deviation) of lung attenuation in BPD was significantly greater than in controls (difference 36.4 HU [26.1-46.7 HU], P < 0.001); the difference between the groups decreased 0.58 HU per month of age (0.08-1.07 HU per month, P = 0.02). BPD patients had greater amounts of opacities and lucencies than controls except with automated quantification of lucencies. Cross-sectionally, lucencies per Ochiai score and opacities per manual segmentation decreased with time. No approach measured a statistically significant relationship to BPD clinical severity. CONCLUSIONS Opacities, lucencies, and overall heterogeneity of lungs via quantitative CT can distinguish BPD patients from healthy controls, and these abnormalities decrease with age across BPD patients. Defining BPD severity by clinical outcomes such as respiratory support at several time points (vs a single time point, per current guidelines) may be meaningful.
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Affiliation(s)
- David R Spielberg
- Division of Pulmonary Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio.,Center for Pulmonary Imaging Research, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Laura L Walkup
- Division of Pulmonary Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio.,Center for Pulmonary Imaging Research, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Jill M Stein
- Department of Radiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Eric J Crotty
- Department of Radiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Mantosh S Rattan
- Department of Radiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Md Monir Hossain
- Division of Biostatistics and Epidemiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Alan S Brody
- Department of Radiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
| | - Jason C Woods
- Division of Pulmonary Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio.,Center for Pulmonary Imaging Research, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio.,Department of Radiology, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio
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Abstract
This article reviews the physics and technology of producing large quantities of highly spin-polarized 3He nuclei using spin-exchange (SEOP) and metastability-exchange (MEOP) optical pumping. Both technical developments and deeper understanding of the physical processes involved have led to substantial improvements in the capabilities of both methods. For SEOP, the use of spectrally narrowed lasers and K-Rb mixtures has substantially increased the achievable polarization and polarizing rate. For MEOP nearly lossless compression allows for rapid production of polarized 3He and operation in high magnetic fields has likewise significantly increased the pressure at which this method can be performed, and revealed new phenomena. Both methods have benefitted from development of storage methods that allow for spin-relaxation times of hundreds of hours, and specialized precision methods for polarimetry. SEOP and MEOP are now widely applied for spin-polarized targets, neutron spin filters, magnetic resonance imaging, and precision measurements.
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Affiliation(s)
- T. R. Gentile
- National Institute of Standards and Technology (NIST), Gaithersburg, Maryland 20899, USA
| | - P. J. Nacher
- Laboratoire Kastler Brossel, ENS-PSL Research University, CNRS, UPMC-Sorbonne Universités, Collège de France, Paris, France
| | - B. Saam
- Department of Physics and Astronomy, University of Utah, Salt Lake City, Utah 84112, USA
| | - T. G. Walker
- Department of Physics, University of Wisconsin-Madison, Madison, Wisconsin 53706, USA
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Surate Solaligue DE, Rodríguez-Castillo JA, Ahlbrecht K, Morty RE. Recent advances in our understanding of the mechanisms of late lung development and bronchopulmonary dysplasia. Am J Physiol Lung Cell Mol Physiol 2017; 313:L1101-L1153. [PMID: 28971976 DOI: 10.1152/ajplung.00343.2017] [Citation(s) in RCA: 104] [Impact Index Per Article: 14.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2017] [Revised: 09/21/2017] [Accepted: 09/23/2017] [Indexed: 02/08/2023] Open
Abstract
The objective of lung development is to generate an organ of gas exchange that provides both a thin gas diffusion barrier and a large gas diffusion surface area, which concomitantly generates a steep gas diffusion concentration gradient. As such, the lung is perfectly structured to undertake the function of gas exchange: a large number of small alveoli provide extensive surface area within the limited volume of the lung, and a delicate alveolo-capillary barrier brings circulating blood into close proximity to the inspired air. Efficient movement of inspired air and circulating blood through the conducting airways and conducting vessels, respectively, generates steep oxygen and carbon dioxide concentration gradients across the alveolo-capillary barrier, providing ideal conditions for effective diffusion of both gases during breathing. The development of the gas exchange apparatus of the lung occurs during the second phase of lung development-namely, late lung development-which includes the canalicular, saccular, and alveolar stages of lung development. It is during these stages of lung development that preterm-born infants are delivered, when the lung is not yet competent for effective gas exchange. These infants may develop bronchopulmonary dysplasia (BPD), a syndrome complicated by disturbances to the development of the alveoli and the pulmonary vasculature. It is the objective of this review to update the reader about recent developments that further our understanding of the mechanisms of lung alveolarization and vascularization and the pathogenesis of BPD and other neonatal lung diseases that feature lung hypoplasia.
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Affiliation(s)
- David E Surate Solaligue
- Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany; and.,Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center, German Center for Lung Research, Giessen, Germany
| | - José Alberto Rodríguez-Castillo
- Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany; and.,Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center, German Center for Lung Research, Giessen, Germany
| | - Katrin Ahlbrecht
- Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany; and.,Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center, German Center for Lung Research, Giessen, Germany
| | - Rory E Morty
- Department of Lung Development and Remodelling, Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany; and .,Department of Internal Medicine (Pulmonology), University of Giessen and Marburg Lung Center, German Center for Lung Research, Giessen, Germany
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46
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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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48
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A decade of lung expansion: A review of ventilation-weighted 1 H lung MRI. Z Med Phys 2017; 27:172-179. [DOI: 10.1016/j.zemedi.2016.07.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2016] [Revised: 07/10/2016] [Accepted: 07/26/2016] [Indexed: 11/30/2022]
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Merhar SL, Tkach JA, Woods JC, South AP, Wiland EL, Rattan MS, Dumoulin CL, Kline-Fath BM. Neonatal imaging using an on-site small footprint MR scanner. Pediatr Radiol 2017; 47:1001-1011. [PMID: 28470389 DOI: 10.1007/s00247-017-3855-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/06/2016] [Revised: 02/09/2017] [Accepted: 03/30/2017] [Indexed: 01/06/2023]
Abstract
With its soft-tissue definition, multiplanar capabilities and advanced imaging techniques, magnetic resonance imaging (MRI) for neonatal care can provide better understanding of pathology, allowing for improved care and counseling to families. However, MR imaging in neonates is often difficult due to patient instability and the complex support necessary for survival. In our institution, we have installed a small footprint magnet in the neonatal intensive care unit (NICU) to minimize patient risks and provide the ability to perform MR imaging safely in this population. With this system, we have been able to provide more information with regard to central nervous system disorders, abdominal pathology, and pulmonary and airway abnormalities, and have performed postmortem imaging as an alternative or supplement to pathological autopsy. In our experience, an MR scanner situated within the NICU has allowed for safer and more expedited imaging of this vulnerable population.
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Affiliation(s)
- Stephanie L Merhar
- Division of Neonatology, Cincinnati Children's Hospital Medical Center, Perinatal Institute, Cincinnati, OH, USA
| | - Jean A Tkach
- Imaging Research Center, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA.,Department of Radiology, Cincinnati Children's Hospital Medical Center, 3333 Burnet Ave., Cincinnati, OH, 45229, USA
| | - Jason C Woods
- Imaging Research Center, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA.,Department of Radiology, Cincinnati Children's Hospital Medical Center, 3333 Burnet Ave., Cincinnati, OH, 45229, USA.,Division of Pulmonary Medicine, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA
| | - Andrew P South
- Division of Neonatology, Children's Hospital Medical Center of Akron, Akron, OH, USA
| | - Emily L Wiland
- Division of Neonatology, Children's Hospital Medical Center of Akron, Akron, OH, USA
| | - Mantosh S Rattan
- Department of Radiology, Cincinnati Children's Hospital Medical Center, 3333 Burnet Ave., Cincinnati, OH, 45229, USA
| | - Charles L Dumoulin
- Imaging Research Center, Cincinnati Children's Hospital Medical Center, Cincinnati, OH, USA.,Department of Radiology, Cincinnati Children's Hospital Medical Center, 3333 Burnet Ave., Cincinnati, OH, 45229, USA
| | - Beth M Kline-Fath
- Department of Radiology, Cincinnati Children's Hospital Medical Center, 3333 Burnet Ave., Cincinnati, OH, 45229, USA.
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50
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Lung liquid clearance in preterm lambs assessed by magnetic resonance imaging. Pediatr Res 2017; 82:114-121. [PMID: 28170388 DOI: 10.1038/pr.2017.31] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Accepted: 11/30/2016] [Indexed: 11/08/2022]
Abstract
BACKGROUND Postnatal adaptation requires liquid clearance and lung aeration. However, their relative contribution to the expansion of functional residual capacity (FRC) has not been fully investigated. We studied evolution of lung liquid removal and lung aeration after birth in preterm lambs. METHODS Lung liquid content and lung volume were assessed at birth and every 30 min over 2 h using magnetic resonance imaging (MRI) in three groups of lambs delivered by cesarean: preterm, late preterm, and late preterm with antenatal steroids. Lung function and mechanics of the respiratory system were also measured. RESULTS Lung liquid content increased by approximately 30% in the preterm group (P < 0.05), whereas it did not change significantly in the late preterm lambs. Antenatal steroids induced a 50% drop in the lung liquid content (P < 0.05). Total lung volume increased in all groups (P < 0.05) but was higher in the late preterm + steroids group relative to other groups (P < 0.05). Compliance and resistances of the respiratory system were significantly correlated with lung liquid content (P < 0.05). CONCLUSION FRC expansion results mainly from an increase in lung volume rather than a decrease in lung liquid in preterm and late preterm lambs. Antenatal steroids promote FRC expansion through increases in lung volume and liquid clearance.
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