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Neonatal imaging

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https://www.readbyqxmd.com/read/28818743/learning-and-combining-image-neighborhoods-using-random-forests-for-neonatal-brain-disease-classification
#1
Veronika A Zimmer, Ben Glocker, Nadine Hahner, Elisenda Eixarch, Gerard Sanroma, Eduard Gratacós, Daniel Rueckert, Miguel Ángel González Ballester, Gemma Piella
It is challenging to characterize and classify normal and abnormal brain development during early childhood. To reduce the complexity of heterogeneous data population, manifold learning techniques are increasingly applied, which find a low-dimensional representation of the data, while preserving all relevant information. The neighborhood definition used for constructing manifold representations of the population is crucial for preserving the similarity structure and it is highly application dependent. The recently proposed neighborhood approximation forests learn a neighborhood structure in a dataset based on a user-defined distance...
August 9, 2017: Medical Image Analysis
https://www.readbyqxmd.com/read/28816798/solid-liver-lesions-in-an-infant-with-neonatal-cholestasis-is-it-always-malignant
#2
Zeren Bariş, Pelin Börcek, Kemal Murat Haberal, Figen Özçay
In this report we describe a patient with neonatal cholestasis who was found to have a liver lesion with suspicious imaging features, although ultimately it was histologically proved to be a pseudotumor. We discuss the characteristic features and imaging findings of macroregenerative nodules of the liver.
August 14, 2017: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/28815625/association-of-transcallosal-motor-fibres-with-function-of-both-hands-after-unilateral-neonatal-arterial-ischemic-stroke
#3
Samuel Groeschel, Lucie Hertz-Pannier, Matthieu Delion, Sébastien Loustau, Béatrice Husson, Manoelle Kossorotoff, Cyrille Renaud, Sylvie Nguyen The Tich, Stéphane Chabrier, Mickael Dinomais
AIM: The objective of this study was to investigate the involvement of the motor fibres of the corpus callosum after unilateral neonatal arterial ischemic stroke (NAIS) of the middle cerebral artery territory and the relationship to both ipsilesional and contralesional hand function. METHOD: Using high-resolution structural magnetic resonance imaging (MRI), functional MRI, and magnetic resonance diffusion-tractography, we compared the midsagittal area of the motor part of the corpus callosum (defined by the fibres connecting the precentral gyri) between 33 7-year-old children after unilateral NAIS and 31 typically developing 7-year-old children...
August 17, 2017: Developmental Medicine and Child Neurology
https://www.readbyqxmd.com/read/28815096/a-case-of-congenital-brainstem-oligodendroglioma-pathology-findings-and-review-of-the-literature
#4
Stefan Kostadinov, Suzanne de la Monte
Congenital and perinatal primary brain neoplasms are extremely rare. Brainstem neoplasms in the perinatal and neonatal period are typically of high-grade nature and have poor prognoses with survival rates of less than 2 years from diagnosis. Herein, we report an unusual case of congenital anaplastic oligodendroglioma that arose in the pons and was detected as diffuse pontine glioma on in utero imaging studies during prenatal evaluation at 26 weeks' gestation. A male infant was delivered at 36.4 weeks of gestation via Cesarean section who developed progressive dyspnea shortly after birth...
2017: Case Reports in Neurological Medicine
https://www.readbyqxmd.com/read/28812000/diagnostic-imaging-features-of-necrotizing-enterocolitis-a-narrative-review
#5
REVIEW
Francesco Esposito, Rosanna Mamone, Marco Di Serafino, Carmela Mercogliano, Valerio Vitale, Gianfranco Vallone, Patrizia Oresta
Necrotizing enterocolitis (NEC) is an inflammatory process, characterized by intestinal necrosis of variable extension, leading to perforation, generalized peritonitis and death. The classical pathogenetic theory focuses on mucosal damage related to a stress induced intestinal ischemia leading to mucosal injury and bacterial colonization of the wall. A more recent hypothesis emphasizes the role of immaturity of gastrointestinal and immune system, particularly of the premature, responsible of bowel wall vulnerability and suffering...
June 2017: Quantitative Imaging in Medicine and Surgery
https://www.readbyqxmd.com/read/28805619/intrauterine-fetal-death-caused-by-seatbelt-injury
#6
Shizuka Yamada, Koji Nishijima, Jin Takahashi, Nozomu Takahashi, Chiyo Tamamura, Yoshio Yoshida
OBJECTIVE: Severe motor vehicle accidents involving pregnant women can result in fetal and neonatal death. We describe a case in which fetal death occurred due to relatively mild seatbelt injuries and present the characteristic magnetic resonance imaging (MRI) findings of the placenta. CASE REPORT: A 26-year-old primigravid woman at 20 weeks gestation was involved in an automobile accident. Although she suffered only a seatbelt injury, fetal death subsequently occurred...
August 2017: Taiwanese Journal of Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28803252/two-dimensional-echocardiography-estimates-of-fetal-ventricular-mass-throughout-gestation
#7
Christina Y L Aye, Adam James Lewandowski, Eric O Ohuma, Ross Upton, Alice Packham, Yvonne Kenworthy, Fenella Roseman, Tess Norris, Malid Molloholli, Sikolia Wanyonyi, Aris T Papageorghiou, Paul Leeson
BACKGROUND: Two-dimensional (2D) ultrasound quality has improved in recent years. Quantification of cardiac dimensions is important to screen and monitor certain fetal conditions. We assessed the feasibility and reproducibility of fetal ventricular measures using 2D echocardiography, reported normal ranges in our cohort, and compared estimates to other modalities. METHODS: Mass and end-diastolic volume were estimated by manual contouring in the four-chamber view using TomTec Image Arena 4...
August 12, 2017: Fetal Diagnosis and Therapy
https://www.readbyqxmd.com/read/28801086/slowly-progressive-leukodystrophy-in-an-adolescent-male-with-phosphoglycerate-kinase-deficiency
#8
Shimpei Baba, Ayumi Kobayashi, Haruna Yokoyama, Kengo Moriyama, Ayako Kashimada, Jun Oyama, Ayako Owada, Shoichi Oyama, Tomohiro Morio, Masatoshi Takagi
We report the case of an 18-year-old man with a phosphoglycerate kinase (PGK) deficiency who had slowly progressive leukodystrophy during adolescence. The patient had a history of severe neonatal jaundice, hemolytic crisis with rhabdomyolysis triggered by febrile viral infections, dysarthria, and intellectual disability during early childhood. Clumsiness in walking and writing became obvious at ∼10years of age. Evaluations performed by us on the 18-year-old patient confirmed the presence of pyramidal tract signs, increased muscle tone, and generalized dystonia...
August 8, 2017: Brain & Development
https://www.readbyqxmd.com/read/28798254/oxygen-dependent-changes-in-lung-development-do-not-affect-epithelial-infection-with-influenza-a-virus
#9
William Domm, Min Yee, Ravi S Misra, Robert Gelein, Aitor Nogales, Luis Martinez Sobrido, Michael A O'Reilly
Infants born prematurely often require supplemental oxygen that contributes to aberrant lung development and increased pulmonary morbidity following a respiratory viral infection. We have been using a mouse model to understand how early-life hyperoxia affects the adult lung response to influenza A virus (IAV) infection. Prior studies showed how neonatal hyperoxia (100% oxygen) increased sensitivity of adult mice to infection with influenza A virus (IAV (A/Hong Kong/X31) H3N2) as defined by persistent inflammation, pulmonary fibrosis, and mortality...
August 10, 2017: American Journal of Physiology. Lung Cellular and Molecular Physiology
https://www.readbyqxmd.com/read/28796856/detection-of-potentially-severe-retinopathy-of-prematurity-by-remote-image-grading
#10
Graham E Quinn, Gui-Shuang Ying, Wei Pan, Agnieshka Baumritter, Ebenezer Daniel
Importance: Telemedicine in retinopathy of prematurity (ROP) has the potential for delivering timely care to premature infants at risk for serious ROP. Objective: To describe the characteristics of eyes at risk for ROP to provide insights into what types of ROP are most easily detected early by image grading. Design, Setting, and Participants: Secondary analysis of eyes with referral-warranted (RW) ROP (stage 3 ROP, zone I ROP, plus disease) on diagnostic examination from the Telemedicine Approaches to Evaluating Acute-Phase Retinopathy of Prematurity (e-ROP) study was conducted from May 1, 2011, to October 31, 2013, in 1257 premature infants with birth weights less than 1251 g in 13 neonatal units in North America...
August 10, 2017: JAMA Ophthalmology
https://www.readbyqxmd.com/read/28796070/clinical-characteristics-of-meckel-diverticulum-in-children-a-retrospective-review-of-a-15-year-single-center-experience
#11
Xiao-Kun Lin, Xiao-Zhong Huang, Xiao-Zhou Bao, Na Zheng, Qiong-Zhang Xia, Cong-de Chen
Meckel diverticulum is the most prevalent congenital abnormality of the gastrointestinal tract in children. The aim of this study was to review and analyze clinical data on the diagnosis and management of Meckel diverticulum in pediatric patients. The records of 102 pediatric patients (<14 years old) who underwent surgery for Meckel diverticulum at our institute between 2001 and 2015 were reviewed. Clinical, imaging, laboratory, surgical, and pathological data were recorded. The series comprised 65 males and 37 females with a median age of 5...
August 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28782073/predictors-of-treatment-warranted-retinopathy-of-prematurity-in-the-sundrop-cohort-influence-of-photographic-features
#12
Cassie A Ludwig, Margaret A Greven, Darius M Moshfeghi
PURPOSE: The Stanford University Network for the Diagnosis of Retinopathy of Prematurity (SUNDROP) initiative-an ongoing telemedicine-based initiative for in-hospital screening of high-risk infants for treatment-warranted ROP (TW-ROP)-has been shown to be a safe, reliable, and cost-effective supplement to the efforts of ROP specialists. We utilized data collected in the SUNDROP initiative to determine demographic (birth weight, sex, multiplicity), weight gain, and ocular imaging (media haze, peripapillary atrophy, fundus pigmentation) predictors of TW-ROP...
August 7, 2017: Graefe's Archive for Clinical and Experimental Ophthalmology
https://www.readbyqxmd.com/read/28780784/comparison-between-3-dimensional-cranial-ultrasonography-and-conventional-2-dimensional-cranial-ultrasonography-in-neonates-impact-on-reinterpretation
#13
Yu Jin Kim, Young Hun Choi, Hyun Hae Cho, So Mi Lee, Ji Eun Park, Jung-Eun Cheon, Woo Sun Kim, In-One Kim
Purpose: The aim of this study was to evaluate impact of 3-dimensional cranial ultrasonography (3DUS) on reinterpretation of cranial ultrasonography images in neonates in comparison with 2-dimensional cranial ultrasonography (2DUS). Methods: We retrospectively enrolled 50 consecutive young infants who simultaneously underwent both 2DUS and 3DUS scanning from February to March 2015. Two pediatric radiologists independently reviewed both scans for overall image quality on a 5-point scale...
May 28, 2017: Ultrasonography
https://www.readbyqxmd.com/read/28779956/ultrasound-imaging-of-the-renal-parenchyma-of-premature-neonates-for-the-assessment-of-renal-growth-and-glomerulomegaly
#14
Sonja Brennan, Yogavijayan Kandasamy
Evidence is increasingly showing that prematurity results in chronic kidney disease. We hypothesized that we could use ultrasound imaging to measure and monitor the growth of the renal parenchyma in premature neonates. We conducted a prospective, case-control study to compare renal parenchymal growth between neonates born prematurely and term neonates. The study patients underwent ultrasound assessment at 32 wk postmenstrual age (PMA) and 37 wk PMA. Term neonates (gestation >37 completed wk) admitted to the neonatal unit with minor neonatal conditions were recruited into the control group...
August 2, 2017: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/28775070/elevated-airway-liquid-volumes-at-birth-a-potential-cause-of-transient-tachypnea-of-the-newborn
#15
Erin Victoria McGillick, Katie Lee, Shigeo Yamaoka, Arjan B Te Pas, Kelly J Crossley, Megan J Wallace, Marcus John Kitchen, Robert A Lewis, Lauren T Kerr, Philip DeKoninck, Janneke Dekker, Marta Thio, Annie McDougall, Stuart B Hooper
Excessive liquid in airways and/or in distal lung tissue may underpin the respiratory morbidity associated with transient tachypnea of the newborn (TTN). However, its effects on lung aeration and respiratory function following birth are unknown. We investigated the effect of elevated airway liquid volumes on newborn respiratory function. Near term rabbit kittens (30 days gestation; term ~32 days) were delivered, had lung liquid drained and either had no liquid replaced (Control, n=7) or 30 mL/kg of liquid was re-added to the airways (liquid added; LA, n=7)...
August 3, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28764564/neonatal-renal-cystic-diseases
#16
Anshika Khare, Vinod Krishnappa, Deepak Kumar, Rupesh Raina
PURPOSE: Neonatal renal cystic diseases have a great impact on the morbidity and mortality of the affected neonates and infants. A good insight into the pathophysiology, diagnosis and treatment options of various neonatal renal cystic diseases aid in early diagnosis and intervention, thereby preventing complications. METHODS: PubMed search was done for articles on "neonatal renal cystic diseases" and relevant publications including reviews were considered for our article...
August 2, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28763424/congenital-cytomegalovirus-infection-after-a-multiple-birth-pregnancy
#17
Einat Shmueli, Eran Hadar, Joseph Pardo, Joseph Attias, Jacob Amir, Efraim Bilavsky
BACKGROUND: Congenital cytomegalovirus (cCMV) infection is an important cause of hearing loss and neurodevelopment delay. While data on vertical transmission and neonatal outcome after singleton pregnancy with cCMV is well established, only scarce reports have addressed cCMV in multiple birth pregnancies. Furthermore, no studies have yet compared the outcome after birth and long-term follow up of children with cCMV born after a singleton vs. multiple pregnancy. METHODS: Infant outcome after birth of symptomatic vs...
July 31, 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28763053/morphology-of-dbx1-respiratory-neurons-in-the-preb%C3%A3-tzinger-complex-and-reticular-formation-of-neonatal-mice
#18
Victoria T Akins, Krishanthi Weragalaarachchi, Maria Cristina D Picardo, Ann L Revill, Christopher A Del Negro
The relationship between neuron morphology and function is a perennial issue in neuroscience. Information about synaptic integration, network connectivity, and the specific roles of neuronal subpopulations can be obtained through morphological analysis of key neurons within a microcircuit. Here we present morphologies of two classes of brainstem respiratory neurons. First, interneurons derived from Dbx1-expressing precursors (Dbx1 neurons) in the preBötzinger complex (preBötC) of the ventral medulla that generate the rhythm for inspiratory breathing movements...
August 1, 2017: Scientific Data
https://www.readbyqxmd.com/read/28761416/neurological-consequences-of-systemic-inflammation-in-the-premature-neonate
#19
REVIEW
Aparna Patra, Hong Huang, John A Bauer, Peter J Giannone
Despite substantial progress in neonatal care over the past two decades leading to improved survival of extremely premature infants, extreme prematurity continues to be associated with long term neurodevelopmental impairments. Cerebral white matter injury is the predominant form of insult in preterm brain leading to adverse neurological consequences. Such brain injury pattern and unfavorable neurologic sequelae is commonly encountered in premature infants exposed to systemic inflammatory states such as clinical or culture proven sepsis with or without evidence of meningitis, prolonged mechanical ventilation, bronchopulmonary dysplasia, necrotizing enterocolitis and chorioamnionitis...
June 2017: Neural Regeneration Research
https://www.readbyqxmd.com/read/28759487/aortocaval-compression-syndrome-time-to-revisit-certain-dogmas
#20
Allison J Lee, Ruth Landau
More than 70 years ago, the phenomenon of "postural shock" in the supine position was described in healthy women in late pregnancy. Since then, avoidance of the supine position has become a key component of clinical practice. Indeed, performing pelvic tilt in mothers at term to avoid aortocaval compression is a universally adopted measure, particularly during cesarean delivery. The studies on which this practice is based are largely nonrandomized, utilized a mix of anesthetic techniques, and were conducted decades ago in the setting of avoidance of vasopressors...
July 27, 2017: Anesthesia and Analgesia
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