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Fetal Echo

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https://www.readbyqxmd.com/read/29767297/magnetic-resonance-assessment-of-fetal-lung-maturity-comparison-between-signal-intensity-and-volume-measurement
#1
Ryo Ogawa, Tomoyuki Kido, Masashi Nakamura, Teruhito Kido, Teruhito Mochizuki, Takashi Sugiyama
PURPOSE: We evaluated the associations between gestational age (GA) and lung-to-liver signal intensity ratio (LLSIR) and fetal lung volume (FLV) using magnetic resonance imaging (MRI). Moreover, we evaluated the reproducibility of these measurements. MATERIALS AND METHODS: LLSIR and FLV were measured using single-shot fast spin-echo MRI in 88 consecutive fetuses. The Spearman test was used to assess the relationships between (1) LLSIR and GA, and (2) FLV and GA in 81 fetuses without lung abnormalities...
May 16, 2018: Japanese Journal of Radiology
https://www.readbyqxmd.com/read/29746007/preterm-growth-restriction-and-bronchopulmonary-dysplasia-the-vascular-hypothesis-and-related-physiology
#2
Arvind Sehgal, Stella M Gwini, Samuel Menahem, Beth J Allison, Suzanne L Miller, Graeme R Polglase
KEY POINTS: Approximately 5-10% pregnancies are affected by fetal growth restriction. Preterm infants affected by fetal growth restriction have a higher incidence of bronchopulmonary dysplasia. This study is the first to measure pulmonary artery thickness and stiffness. It highlights that impaired vasculogenesis may be a contributory factor in the higher incidence of bronchopulmonary dysplasia in preterm growth restricted infants. The study addresses the mechanistic link between fetal programming and vascular architecture and mechanics...
May 10, 2018: Journal of Physiology
https://www.readbyqxmd.com/read/29622500/max-dd-dt-a-novel-parameter-to-assess-fetal-cardiac-contractility-and-a-substitute-for-max-dp-dt
#3
Yasuyuki Fujita, Ryo Kiyokoba, Yasuo Yumoto, Kiyoko Kato
Aortic pulse waveforms are composed of a forward wave from the heart and a reflection wave from the periphery. We focused on this forward wave and suggested a new parameter, the maximum slope of aortic pulse waveforms (max dD/dt), for fetal cardiac contractility. Max dD/dt was calculated from fetal aortic pulse waveforms recorded with an echo-tracking system. A normal range of max dD/dt was constructed in 105 healthy fetuses using linear regression analysis. Twenty-two fetuses with suspected fetal cardiac dysfunction were divided into normal and decreased max dD/dt groups, and their clinical parameters were compared...
April 2, 2018: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/29579059/cardiac-findings-in-infants-with-in-utero-exposure-to-zika-virus-a-cross-sectional-study
#4
Dulce H G Orofino, Sonia R L Passos, Raquel V C de Oliveira, Carla Verona B Farias, Maria de Fatima M P Leite, Sheila M Pone, Marcos V da S Pone, Helena A R Teixeira Mendes, Maria Elizabeth L Moreira, Karin Nielsen-Saines
BACKGROUND: Antenatal exposure to Zika virus (ZIKV) is related to severe neurological manifestations. A previous study in Brazil reported an increased incidence of non-severe congenital heart defects in infants with diagnosis of congenital Zika syndrome but without laboratory confirmation of ZIKV infection in the mother or infant. The objective of this study is to report echocardiographic (ECHO) findings in infants with laboratory confirmed antenatal exposure to ZIKV. METHODOLOGY: Cross sectional study of cardiologic assessments of infants born between November 2015 and January 2017 with confirmed vertical exposure to ZIKV in Rio de Janeiro, Brazil...
March 2018: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/29467359/evaluation-of-a-portable-doppler-ultrasound-gating-device-for-fetal-cardiac-mr-imaging-initial-results-at-1-5t-and-3t
#5
Fabian Kording, Bjoern P Schoennagel, Manuela Tavares de Sousa, Kai Fehrs, Gerhard Adam, Jin Yamamura, Christian Ruprecht
PURPOSE: Fetal cardiac MRI has the potential to play an important role in the assessment of fetal cardiac pathologies, but it is up to now not feasible due to a missing gating method. The purpose of this work was the evaluation of Doppler ultrasound (DUS) for external fetal cardiac gating with regard to compatibility, functionality, and reliability. Preliminary results were assessed performing fetal cardiac MRI. METHODS: An MRI conditional DUS device was developed to obtain a gating signal from the fetal heart...
February 21, 2018: Magnetic Resonance in Medical Sciences: MRMS
https://www.readbyqxmd.com/read/29417607/fetal-pulmonary-valve-stenosis-or-atresia-with-intact-ventricular-septum-predictors-of-need-for-neonatal-intervention
#6
Qing Wang, Yu Rong Wu, Xian Ting Jiao, Peng Fei Wu, Li Qing Zhao, Sun Chen, Kun Sun
OBJECTIVES: To compare the fetal echocardiographic measurements and neonatal outcome of fetuses with diagnosis of critical pulmonary stenosis (CPS/IVS) and pulmonary atresia with intact ventricular septum (PA/IVS) to identify the predictors of neonatal ductus dependence and the need for neonatal intervention. METHODS: Forty-four fetuses with a diagnosis of membranous PA/IVS or CPS/IVS referred to Shanghai Xinhua Hospital Affiliated to Shanghai Jiaotong University between June 2009 and November 2014 were respectively analyzed...
March 2018: Prenatal Diagnosis
https://www.readbyqxmd.com/read/29396737/prenatal-diagnosis-of-funisitis-two-case-reports
#7
Daisuke Katsura, Yuichiro Takahashi, Shigenori Iwagaki, Rika Chiaki, Kazuhiko Asai, Masako Koike, Shunsuke Yasumi, Madoka Furuhashi, Akira Hara, Hitoshi Iwata
Acute funisitis is characterized by the infiltration of fetal neutrophils from the umbilical vessels into Wharton's jelly and presents as fetal inflammation. However, no reports about its prenatal diagnosis using ultrasonography have been published. We encountered one case of oligohydramnios at 26 weeks and another case of threatened premature delivery at 27 weeks of gestation with ultrasonographic findings of non-uniform thickening of Wharton's jelly, a heterogeneous internal echo, and a high echoic line of the umbilical vessel wall...
February 2, 2018: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/29327361/myocardial-injury-in-fetal-aortic-stenosis-insights-from-amniotic-fluid-analysis
#8
Kevin G Friedman, Lynn A Sleeper, Raina N Fichorova, Taylor Weilnau, Wayne Tworetzky, Louise E Wilkins-Haug
OBJECTIVE: Fetal aortic stenosis (AS) imposes pressure load on the developing left ventricle (LV) and leads to derangements in myocardial structure and function via mechanisms that are not well characterized. METHODS: We compared amniotic fluid NT-BNP and troponin levels in fetuses with AS prior to fetal valvuloplasty and controls. We estimated correlations between NT-BNP and fetal echo parameters and identify NT-BNP cutoff associated with biventricular outcome RESULTS: Median NT-BNP level was higher in fetal AS than controls (3858 vs 1737 pg/mL, P < 0...
February 2018: Prenatal Diagnosis
https://www.readbyqxmd.com/read/29281153/microvascular-perfusion-of-the-placenta-developing-fetal-liver-and-lungs-assessed-with-intravoxel-incoherent-motion-imaging
#9
András Jakab, Ruth L Tuura, Raimund Kottke, Nicole Ochsenbein-Kölble, Giancarlo Natalucci, Thi Dao Nguyen, Christian Kellenberger, Ianina Scheer
BACKGROUND: In utero intravoxel incoherent motion magnetic resonance imaging (IVIM-MRI) provides a novel method for examining microvascular perfusion fraction and diffusion in the developing human fetus. PURPOSE: To characterize gestational changes in the microvascular perfusion fraction of the placenta, fetal liver, and lungs using IVIM-MRI. STUDY TYPE: Retrospective, cross-sectional study. SUBJECTS: Fifty-five datasets from 33 singleton pregnancies were acquired (17-36 gestational weeks)...
December 27, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/29251798/lateral-ventricular-volume-measurement-by-3d-mr-hydrography-in-fetal-ventriculomegaly-and-normal-lateral-ventricles
#10
Si-Xiu Zhao, Yun-Hua Xiao, Fu-Rong Lv, Zhi-Wei Zhang, Bo Sheng, Hong-Li Ma
BACKGROUND: In fetuses with prenatal ventriculomegaly (VM), ventricular volume on MRI has been shown to correlate with poor postnatal outcomes and in utero death. 3D magnetic resonance hydrography (MRH) has been widely used for MR cholangiopancreatography. PURPOSE: To investigate the reliability of 3D MRH for lateral ventricular volume measurement in fetuses with VM and normal lateral ventricles, using manual multisection planimetry (MSP) as a reference standard...
December 18, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/29193244/an-efficient-sequence-for-fetal-brain-imaging-at-3t-with-enhanced-t-1-contrast-and-motion-robustness
#11
Giulio Ferrazzi, Anthony N Price, Rui Pedro A G Teixeira, Lucilio Cordero-Grande, Jana Hutter, Ana Gomes, Francesco Padormo, Emer Hughes, Torben Schneider, Mary Rutherford, Maria Kuklisova Murgasova, Joseph V Hajnal
PURPOSE: Ultrafast single-shot T2 -weighted images are common practice in fetal MR exams. However, there is limited experience with fetal T1 -weighted acquisitions. This study aims at establishing a robust framework that allows fetal T1 -weighted scans to be routinely acquired in utero at 3T. METHODS: A 2D gradient echo sequence with an adiabatic inversion was optimized to be robust to fetal motion and maternal breathing optimizing grey/white matter contrast at the same time...
November 28, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/29141840/cerebral-oxygenation-measurements-by-magnetic-resonance-imaging-in-fetuses-with-and-without-heart-defects
#12
Mette H Lauridsen, Niels Uldbjerg, Tine B Henriksen, Olav B Petersen, Brian Stausbøl-Grøn, Niels B Matthiesen, David A Peters, Steffen Ringgaard, Vibeke E Hjortdal
BACKGROUND: Children with major congenital heart defects are risking impaired cerebral growth, delayed cerebral maturation, and neurodevelopmental disorders. We aimed to compare the cerebral tissue oxygenation of fetuses with major heart defects to that of fetuses without heart defects as estimated by the magnetic resonance imaging modality T2*. T2* is low in areas with high concentrations of deoxyhemoglobin. METHODS AND RESULTS: At gestational age mean 32 weeks (early) and mean 37 weeks (late), we compared the fetal cerebral T2* in 28 fetuses without heart defects to that of 15 fetuses with major heart defects: transposition of the great arteries (n=7), coarctation of the aorta/hypoplastic aortic arch (n=5), tetralogy of Fallot (n=1), hypoplastic right heart (n=1), and common arterial trunk (n=1)...
November 2017: Circulation. Cardiovascular Imaging
https://www.readbyqxmd.com/read/29135072/measuring-human-placental-blood-flow-with-multidelay-3d-grase-pseudocontinuous-arterial-spin-labeling-at-3t
#13
Xingfeng Shao, Dapeng Liu, Thomas Martin, Teresa Chanlaw, Sherin U Devaskar, Carla Janzen, Aisling M Murphy, Daniel Margolis, Kyunghyun Sung, Danny J J Wang
BACKGROUND: Placenta influences the health of both a woman and her fetus during pregnancy. Maternal blood supply to placenta can be measured noninvasively using arterial spin labeling (ASL). PURPOSE: To present a multidelay pseudocontinuous arterial spin labeling (pCASL) combined with a fast 3D inner-volume gradient- and spin-echo (GRASE) imaging technique to simultaneously measure placental blood flow (PBF) and arterial transit time (ATT), and to study PBF and ATT evolution with gestational age during the second trimester...
November 14, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/29115686/inner-volume-echo-volumar-imaging-ivevi-for-robust-fetal-brain-imaging
#14
Rita G Nunes, Giulio Ferrazzi, Anthony N Price, Jana Hutter, Andreia S Gaspar, Mary A Rutherford, Joseph V Hajnal
PURPOSE: Fetal functional MRI studies using conventional 2-dimensional single-shot echo-planar imaging sequences may require discarding a large data fraction as a result of fetal and maternal motion. Increasing the temporal resolution using echo volumar imaging (EVI) could provide an effective alternative strategy. Echo volumar imaging was combined with inner volume (IV) imaging (IVEVI) to locally excite the fetal brain and acquire full 3-dimensional images, fast enough to freeze most fetal head motion...
July 2018: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/29096572/prenatal-cardiac-magnetic-resonance-imaging-of-right-aortic-arch-with-mirror-image-branching-and-retroesophageal-left-ductus-arteriosus
#15
Su-Zhen Dong, Ming Zhu
OBJECTIVE: To evaluate the utility of fetal cardiac magnetic resonance imaging (MRI) in diagnosing right aortic arch with mirror image branching and retroesophageal left ductus arteriosus (RLDA). METHODS: This retrospective study included six infants diagnosed with right aortic arch with mirror image branching and RLDA postnatally by cardiac computed tomography (CT) that had fetal echocardiography (echo) and MRI initially performed. The six fetal MR cases were examined using 1...
November 2, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/29091749/the-protein-corona-around-nanoparticles-facilitates-stem-cell-labeling-for-clinical-mr-imaging
#16
Hossein Nejadnik, Seyed-Meghdad Taghavi-Garmestani, Steven J Madsen, Kai Li, Saeid Zanganeh, Phillip Yang, Morteza Mahmoudi, Heike E Daldrup-Link
Purpose To evaluate if the formation of a protein corona around ferumoxytol nanoparticles can facilitate stem cell labeling for in vivo tracking with magnetic resonance (MR) imaging. Materials and Methods Ferumoxytol was incubated in media containing human serum (group 1), fetal bovine serum (group 2), StemPro medium (group 3), protamine (group 4), and protamine plus heparin (group 5). Formation of a protein corona was characterized by means of dynamic light scattering, ζ potential, and liquid chromatography-mass spectrometry...
March 2018: Radiology
https://www.readbyqxmd.com/read/28868251/maternal-and-fetal-tuberous-sclerosis-do-we-know-enough-as-an-obstetrician
#17
Nalini Sharma, Shriram Sharma, Jion Lalnunnem Thiek, Santa Singh Ahanthem, Arnab Kalita, Donboklang Lynser
BACKGROUND: Tuberous sclerosis, also known as tuberous sclerosis complex (TSC), is a rare genetic condition that mainly causes hamartomas to develop in different parts of the body. TSC, an autosomal dominant trait with variable penetrance, can adversely affect maternal and fetal outcome. CASE PRESENTATION: In this paper, a case of maternal and fetal tuberous sclerosis having fetal cardiac rhabdomyoma detected in utero at 26 weeks was reported who subsequently had fetal demise at 31 weeks...
April 2017: Journal of Reproduction & Infertility
https://www.readbyqxmd.com/read/28867155/the-boundaries-of-fetal-cardiac-intervention-expand-or-tighten
#18
REVIEW
Laura Gellis, Wayne Tworetzky
Fetal cardiac intervention (FCI) is a relatively new and continually evolving field, and, for select cardiac defects, offers the potential to alter the progression of the disease and improve outcomes. It is a procedure that requires a collaborative effort between maternal-fetal medicine, interventional cardiology and fetal echo/ultrasound specialists, as well as fetal and maternal anesthesiologists, nursing specialists, and social workers. This article reviews the most recently reported data and advances in FCI...
December 2017: Seminars in Fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28862023/what-is-the-most-suitable-mr-signal-index-for-quantitative-evaluation-of-placental-function-using-half-fourier-acquisition-single-shot-turbo-spin-echo-compared-with-t2-relaxation-time
#19
Kyoko Nakao Kameyama, Aki Kido, Yuki Himoto, Yusaku Moribata, Sachiko Minamiguchi, Ikuo Konishi, Kaori Togashi
Background Half-Fourier acquisition single-shot turbo spin-echo (HASTE) imaging is now widely used for placental and fetal imaging because of its rapidity and low sensitivity to fetal movement. If placental dysfunction is also predicted by quantitative value obtained from HASTE image, then it might be beneficial for evaluating placental wellbeing. Purpose To ascertain the most suitable magnetic resonance (MR) signal indexes reflecting placental function using HASTE imaging. Material and Methods This retrospective study included 37 consequent patients who had given informed consent to MR imaging (MRI) examinations...
January 1, 2017: Acta Radiologica
https://www.readbyqxmd.com/read/28704916/three-dimensional-echocardiography-in-adult-congenital-heart-disease
#20
REVIEW
Hyun Suk Yang
Congenital heart disease (CHD) is now more common in adults than in children due to improvements in fetal echo, neonatal and pediatric care, and surgical techniques leading to dramatically increased survivability into adulthood. Adult patients with CHD, regardless of prior cardiac surgery, experience further cardiac problems or therapeutic challenges; therefore, a non-invasive, easily accessible echocardiographic examination is an essential follow-up tool. Among echocardiographic modalities, three-dimensional (3D) echocardiography provides better delineation of spatial relationships in complex cardiac geometries and more accurate volumetric information without geometric assumptions...
July 2017: Korean Journal of Internal Medicine
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