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MRI for Neonates

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https://www.readbyqxmd.com/read/28631523/the-association-among-prematurity-cochlear-hyperintensity-and-hearing-loss
#1
Michael A Wien, Matthew T Whitehead
Background Prematurity is a major risk factor for neonatal hearing loss. Recent advancements in magnetic resonance imaging (MRI) have made it possible to evaluate structural details of the membranous labyrinths in premature infants that have heretofore been inaccessible. Objective We compared the prevalence of abnormal cochlear signal intensity in premature and term neonates and evaluated for a potential link with hearing loss. Materials and methods We retrospectively reviewed 148 consecutive MR exams performed in premature (< 37 weeks' gestation) and term neonates performed over a 30-month period...
January 1, 2017: Neuroradiology Journal
https://www.readbyqxmd.com/read/28626962/three-dimensional-motion-corrected-sensitivity-encoding-reconstruction-for-multi-shot-multi-slice-mri-application-to-neonatal-brain-imaging
#2
Lucilio Cordero-Grande, Emer J Hughes, Jana Hutter, Anthony N Price, Joseph V Hajnal
PURPOSE: To introduce a methodology for the reconstruction of multi-shot, multi-slice magnetic resonance imaging able to cope with both within-plane and through-plane rigid motion and to describe its application in structural brain imaging. THEORY AND METHODS: The method alternates between motion estimation and reconstruction using a common objective function for both. Estimates of three-dimensional motion states for each shot and slice are gradually refined by improving on the fit of current reconstructions to the partial k-space information from multiple coils...
June 19, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28623417/a-validated-clinical-mri-injury-scoring-system-in-neonatal-hypoxic-ischemic-encephalopathy
#3
Shamik B Trivedi, Zachary A Vesoulis, Rakesh Rao, Steve M Liao, Joshua S Shimony, Robert C McKinstry, Amit M Mathur
BACKGROUND: Deep nuclear gray matter injury in neonatal hypoxic-ischemic encephalopathy (HIE) is associated with worse neurodevelopmental outcomes. We previously published a qualitative MRI injury scoring system utilizing serial T1-weighted, T2-weighted and diffusion-weighted imaging (DWI), weighted for deep nuclear gray matter injury. OBJECTIVES: To establish the validity of the MRI scoring system with neurodevelopmental outcome at 18-24 months. MATERIALS AND METHODS: MRI scans from neonates with moderate to severe HIE treated with therapeutic hypothermia were evaluated...
June 16, 2017: Pediatric Radiology
https://www.readbyqxmd.com/read/28612638/should-isolated-fetal-ventriculomegaly-measured-below-12%C3%A2-mm-be-viewed-as-a-variant-of-the-norm-results-of-a-5-year-experience-in-a-prenatal-referral-center
#4
Anaïs Lavongtheung, Guillaume Jedraszak, Philippe Naepels, Pierre Tourneux, Catherine Gondry-Jouet, Anne-Gaëlle L E Moing, Jean Gondry, Julien Chevreau
BACKGROUND: Fetal ventriculomegaly (VM) is defined as lateral ventricles measured above 10 mm. Some authors believe VM < 12 mm are variants of the norm and needn't be addressed for referral ultrasound. METHODS: A retrospective continuous cohort study of 127 confirmed fetal VM was divided in 3 groups after initial referral sonographic assessment: isolated VM < 12 mm (group A), isolated VM ≥ 12 mm (group B), and VM associated with other malformations (group C)...
June 14, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28601980/plicae-palmatae-in-neonates-tumor-mimic-on-sonography
#5
Masahiro Kitami
Plicae palmatae are uterine cervical folds that can be misdiagnosed as a uterine septum on magnetic resonance imaging (MRI). Previous studies in the literature generally tend to include only adults and are limited to MRI findings. Here, we present the case of a 6-day-old girl with a tumorous lesion in her uterine isthmus on sonography. Although we considered uterine tumor as a differential diagnosis, the smooth surface and continuity with a cervical fold on the caudal side suggested that the lesion was, in fact, the tip of plicae palmatae...
June 10, 2017: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/28594884/correlation-between-white-matter-microstructure-and-executive-functions-suggests-early-developmental-influence-on-long-fibre-tracts-in-preterm-born-adolescents
#6
Brigitte Vollmer, Aiko Lundequist, Gustaf Mårtensson, Zoltan Nagy, Hugo Lagercrantz, Ann-Charlotte Smedler, Hans Forssberg
MAIN OBJECTIVES: Executive functions are frequently a weakness in children born preterm. We examined associations of executive functions and general cognitive abilities with brain structure in preterm born adolescents who were born with appropriate weight for gestational age and who have no radiological signs of preterm brain injury on neuroimaging. METHODS: The Stockholm Neonatal Project (SNP) is a longitudinal, population-based study of children born preterm (<36 weeks of gestation) with very low birth weight (<1501g) between 1988-1993...
2017: PloS One
https://www.readbyqxmd.com/read/28589258/a-latent-measure-explains-substantial-variance-in-white-matter-microstructure-across-the-newborn-human-brain
#7
Emma J Telford, Simon R Cox, Sue Fletcher-Watson, Devasuda Anblagan, Sarah Sparrow, Rozalia Pataky, Alan Quigley, Scott I Semple, Mark E Bastin, James P Boardman
A latent measure of white matter microstructure (g WM) provides a neural basis for information processing speed and intelligence in adults, but the temporal emergence of g WM during human development is unknown. We provide evidence that substantial variance in white matter microstructure is shared across a range of major tracts in the newborn brain. Based on diffusion MRI scans from 145 neonates [gestational age (GA) at birth range 23(+2)-41(+5) weeks], the microstructural properties of eight major white matter tracts were calculated using probabilistic neighborhood tractography...
June 6, 2017: Brain Structure & Function
https://www.readbyqxmd.com/read/28588126/differences-in-subependymal-vein-anatomy-may-predispose-preterm-infants-to-gmh-ivh
#8
Domenico Tortora, Mariasavina Severino, Mariya Malova, Alessandro Parodi, Giovanni Morana, Jan Sedlacik, Paul Govaert, Joseph J Volpe, Andrea Rossi, Luca Antonio Ramenghi
BACKGROUND AND PURPOSE: The anatomy of the deep venous system plays an important role in the pathogenesis of brain lesions in the preterm brain as shown by different histological studies. The aims of this study were to compare the subependymal vein anatomy of preterm neonates with germinal matrix haemorrhage-intraventricular haemorrhage (GMH-IVH), as evaluated by susceptibility-weighted imaging (SWI) venography, with a group of age-matched controls with normal brain MRI, and to explore the relationship between the anatomical features of subependymal veins and clinical risk factors for GMH-IVH...
June 6, 2017: Archives of Disease in Childhood. Fetal and Neonatal Edition
https://www.readbyqxmd.com/read/28586151/a-heterozygous-microdeletion-of-20p12-2-3-encompassing-prokr2-and-bmp2-in-a-patient-with-congenital-hypopituitarism-and-growth-hormone-deficiency
#9
Samuel J H Parsons, Neville B Wright, Emma Burkitt-Wright, Mars S Skae, Phillip G Murray
Congenital growth hormone deficiency is a rare disorder with an incidence of approximately 1 in 4,000 live births. Pituitary development is under the control of a multitude of spatiotemporally regulated signaling molecules and transcription factors. Mutations in the genes encoding these molecules can result in hypopituitarism but for the majority of children with congenital hypopituitarism, the aetiology of their disease remains unknown. The proband is a 5-year-old girl who presented with neonatal hypoglycaemia and prolonged jaundice...
June 6, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28580040/pseudo-prune-belly-syndrome-diagnosis-revealed-by-imaging-a-case-report-and-brief-review
#10
Hemal Grover, Sanjay Sethi, Jatin Garg, Amrit Pal Ahluwalia
BACKGROUND: Prune Belly Syndrome (PBS) is a rare entity, usually found in male neonates. It comprises complex urinary tract anomalies, bilateral undescended testis and absence of anterior abdominal wall muscles. Patients with unilateral abdominal wall deficiency, unilateral undescended testis and female neonates with abdominal wall laxity are classified as Pseudo Prune Belly syndrome (PPBS). Reports on PPBS do not highlight the radiological and imaging characteristics of this syndrome and the current literature on the role of newer imaging modalities, such as Magnetic Resonance Imaging (MRI), remains relatively sparse...
2017: Polish Journal of Radiology
https://www.readbyqxmd.com/read/28576520/clinical-characterization-of-novel-chromosome-22q13-microdeletions
#11
Jennifer F Ha, Ayesha Ahmad, Marci M Lesperance
INTRODUCTION: The advent of chromosome microarray analysis (CMA) for evaluation of patients with multiple congenital anomalies has made it possible to define chromosomal imbalances with greater precision and resolutions significantly smaller than possible by standard G-banded chromosome analysis. We describe two patients with novel chromosomal anomalies involving chromosome 22q13, a locus also associated with Phelan-McDermid syndrome (PMS). OBJECTIVE: We aim to characterize the novel phenotypic and genotypic findings of two patients with 22q13 microdeletions, distinct from PMS, comparing and contrasting with features of PMS...
April 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28573895/impacts-of-therapeutic-hypothermia-on-cardiovascular-hemodynamics-in-newborns-with-hypoxic-ischemic-encephalopathy-a-case-control-study-using-echocardiography
#12
Ji Hong Yoon, Eun-Jung Lee, Sook Kyung Yum, Cheong-Jun Moon, Youn Young-Ah, Yoo Jin Kwun, Jae Young Lee, In Kyung Sung
PURPOSE: The effects of therapeutic hypothermia (TH) on hemodynamics in newborns with hypoxic-ischemic encephalopathy (HIE) were evaluated. MATERIALS AND METHODS: Thirty-two neonates (gestational age, 39.4 ± 1.3 weeks) who had TH for HIE and echocardiographic hemodynamic assessments during TH and post-TH period were studied. Gestational-age-matched 34 healthy neonates were enrolled for comparison. RESULTS: During TH, patients had significantly decreased left ventricular cardiac output (LVCO), descending aorta blood flow (DABF), and DABF/LVCO ratio, and increased resistive index of DA compared to controls...
June 2, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28549636/amplitude-integrated-electroencephalography-improves-the-identification-of-infants-with-encephalopathy-for-therapeutic-hypothermia-and-predicts-neurodevelopmental-outcomes-at-2-years-of-age
#13
Janne Helen Skranes, Gro Løhaugen, Eva Margrethe Schumacher, Damjan Osredkar, Andres Server, Frances Mary Cowan, Tom Stiris, Drude Fugelseth, Marianne Thoresen
OBJECTIVES: To examine whether using an amplitude-integrated electroencephalography (aEEG) severity pattern as an entry criterion for therapeutic hypothermia better selects infants with hypoxic-ischemic encephalopathy and to assess the time-to-normal trace for aEEG and magnetic resonance imaging (MRI) lesion load as 24-month outcome predictors. STUDY DESIGN: Forty-seven infants meeting Norwegian therapeutic hypothermia guidelines were enrolled prospectively. Eight-channel EEG/aEEG was recorded from 6 hours until after rewarming, and read after discharge...
May 23, 2017: Journal of Pediatrics
https://www.readbyqxmd.com/read/28542743/neuroimaging-cardiovascular-physiology-and-functional-outcomes-in-infants-with-congenital-heart-disease
#14
REVIEW
Nathalie H P Claessens, Christopher J Kelly, Serena J Counsell, Manon J N L Benders
This review integrates data on brain dysmaturation and acquired brain injury using fetal and neonatal magnetic resonance imaging (MRI), including the contribution of cardiovascular physiology to differences in brain development, and the relationship between brain abnormalities and subsequent neurological impairments in infants with congenital heart disease (CHD). The antenatal and neonatal period are critical for optimal brain development; the developing brain is particularly vulnerable to haemodynamic disturbances during this time...
May 19, 2017: Developmental Medicine and Child Neurology
https://www.readbyqxmd.com/read/28530209/reproducible-3d-printed-head-tanks-for-electrical-impedance-tomography-with-realistic-shape-and-conductivity-distribution
#15
James Avery, Kirill Aristovich, Barney Low, David Holder
OBJECTIVE: Electrical impedance tomography (EIT) has many promising applications in brain injury monitoring. To evaluate both instrumentation and reconstruction algorithms, experiments are first performed in head tanks. Existing methods, whilst accurate, produce a discontinuous conductivity, and are often made by hand, making it hard for other researchers to replicate. APPROACH: We have developed a method for constructing head tanks directly in a 3D printer. Conductivity was controlled through perforations in the skull surface, which allow for saline to pass through...
May 22, 2017: Physiological Measurement
https://www.readbyqxmd.com/read/28526882/prediction-of-cognitive-and-motor-outcome-of-preterm-infants-based-on-automatic-quantitative-descriptors-from-neonatal-mr-brain-images
#16
Pim Moeskops, Ivana Išgum, Kristin Keunen, Nathalie H P Claessens, Ingrid C van Haastert, Floris Groenendaal, Linda S de Vries, Max A Viergever, Manon J N L Benders
This study investigates the predictive ability of automatic quantitative brain MRI descriptors for the identification of infants with low cognitive and/or motor outcome at 2-3 years chronological age. MR brain images of 173 patients were acquired at 30 weeks postmenstrual age (PMA) (n = 86) and 40 weeks PMA (n = 153) between 2008 and 2013. Eight tissue volumes and measures of cortical morphology were automatically computed. A support vector machine classifier was employed to identify infants who exhibit low cognitive and/or motor outcome (<85) at 2-3 years chronological age as assessed by the Bayley scales...
May 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28500367/evolution-of-posterior-fossa-and-brain-morphology-after-in-utero-repair-of-open-neural-tube-defects-assessed-by-mri
#17
Christin Rethmann, Ianina Scheer, Martin Meuli, Luca Mazzone, Ueli Moehrlen, Christian Johannes Kellenberger
OBJECTIVES: To describe characteristics of foetuses undergoing in utero repair of open neural tube defects (ONTD) and assess postoperative evolution of posterior fossa and brain morphology. METHODS: Analysis of pre- and postoperative foetal as well as neonatal MRI of 27 foetuses who underwent in utero repair of ONTD. Type and level of ONTD, hindbrain configuration, posterior fossa and liquor space dimensions, and detection of associated findings were compared between MRI studies and to age-matched controls...
May 12, 2017: European Radiology
https://www.readbyqxmd.com/read/28491493/brainstem-shape-is-affected-by-clinical-course-in-the-neonatal-intensive-care-unit
#18
Marcus Lo, Leire Zubiaurre-Elorza, Conor Wild, Annika C Linke, David S C Lee, Victor K Han, Rhodri Cusack
The brainstem, critical for motor function, autonomic regulation, and many neurocognitive functions, undergoes rapid development from the third trimester. Accordingly, we hypothesized it would be vulnerable to insult during this period, and that a difficult clinical course in the neonatal intensive care unit (NICU) would affect development, and be reflected through atypical shape. Our study population consisted of 66 neonates - all inpatients from the NICU at Victoria Hospital, London Health Sciences Centre, ON, Canada, of which 45 entered the final analysis...
2017: NeuroImage: Clinical
https://www.readbyqxmd.com/read/28483254/teratoma-of-the-neonatal-head-and-neck-a-41-year-experience
#19
Jacob R Brodsky, Alexandria L Irace, Amanda Didas, Karen Watters, Judy A Estroff, Carol E Barnewolt, Antonio Perez-Atayde, Reza Rahbar
OBJECTIVE: To review our institution's experience with the presentation, evaluation, and management of teratoma of the head and neck in the neonatal population. DESIGN: Retrospective case series (November 1970 through September 2011). SETTING: Tertiary care children's hospital. PATIENTS: 14 patients (12 boys and 2 girls). INTERVENTION: Detailed review of presentation, diagnostic approaches, surgical management, and outcomes...
June 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28479101/the-frequency-and-severity-of-magnetic-resonance-imaging-abnormalities-in-infants-with-mild-neonatal-encephalopathy
#20
Brian H Walsh, Jeffrey Neil, JoAnn Morey, Edward Yang, Michelle V Silvera, Terrie E Inder, Cynthia Ortinau
OBJECTIVE: To assess and contrast the incidence and severity of abnormalities on cerebral magnetic resonance imaging (MRI) between infants with mild, moderate, and severe neonatal encephalopathy who received therapeutic hypothermia. STUDY DESIGN: This retrospective cohort studied infants with mild, moderate, and severe neonatal encephalopathy who received therapeutic hypothermia at a single tertiary neonatal intensive care unit between 2013 and 2015. Two neuroradiologists masked to the clinical condition evaluated brain MRIs for cerebral injury after therapeutic hypothermia using the Barkovich classification system...
May 4, 2017: Journal of Pediatrics
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