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Fetal Echo

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https://www.readbyqxmd.com/read/28152240/spatiotemporal-alignment-of-in-utero-bold-mri-series
#1
Esra Abaci Turk, Jie Luo, Borjan Gagoski, Javier Pascau, Carolina Bibbo, Julian N Robinson, P Ellen Grant, Elfar Adalsteinsson, Polina Golland, Norberto Malpica
PURPOSE: To present a method for spatiotemporal alignment of in-utero magnetic resonance imaging (MRI) time series acquired during maternal hyperoxia for enabling improved quantitative tracking of blood oxygen level-dependent (BOLD) signal changes that characterize oxygen transport through the placenta to fetal organs. MATERIALS AND METHODS: The proposed pipeline for spatiotemporal alignment of images acquired with a single-shot gradient echo echo-planar imaging includes 1) signal nonuniformity correction, 2) intravolume motion correction based on nonrigid registration, 3) correction of motion and nonrigid deformations across volumes, and 4) detection of the outlier volumes to be discarded from subsequent analysis...
February 2, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28092268/phenotypic-outcomes-in-mouse-and-human-foxc1-dependent-dandy-walker-cerebellar-malformation-suggest-shared-mechanisms
#2
Parthiv Haldipur, Derek Dang, Kimberly A Aldinger, Olivia K Janson, Fabien Guimiot, Homa Adle-Biasette, William B Dobyns, Joseph R Siebert, Rosa Russo, Kathleen J Millen
FOXC1 loss contributes to Dandy-Walker malformation (DWM), a common human cerebellar malformation. Previously, we found that complete Foxc1 loss leads to aberrations in proliferation, neuronal differentiation and migration in the embryonic mouse cerebellum (Haldipur et al., 2014). We now demonstrate that hypomorphic Foxc1 mutant mice have granule and Purkinje cell abnormalities causing subsequent disruptions in postnatal cerebellar foliation and lamination. Particularly striking is the presence of a partially formed posterior lobule which echoes the posterior vermis DW 'tail sign' observed in human imaging studies...
January 16, 2017: ELife
https://www.readbyqxmd.com/read/28029461/-prevention-of-preterm-birth-by-uterine-cervical-cerclage
#3
L Marcellin
OBJECTIVE: To review the scientific literature on cervical insufficiency and indications of cervical cerclage cervix. MATERIALS AND METHODS: The PubMed database, the Cochrane Library and the recommendations from the French and international obstetrical societies between 1972 and June 2016 have been consulted. RESULTS: Cervical insufficiency is a pathophysiological concept and to date no consensual definition is available: the diagnosis is clinical and discussed retrospectively in case of patients with a history of late miscarriages and/or spontaneous preterm delivery, with asymptomatic dilatation of the cervix (professional consensus)...
October 29, 2016: Journal de Gynécologie, Obstétrique et Biologie de la Reproduction
https://www.readbyqxmd.com/read/28025468/evaluation-of-fetal-thyroid-with-3d-gradient-echo-t1-weighted-mr-imaging
#4
Shinya Fujii, Junichi Nagaishi, Naoko Mukuda, Sachi Kaneda, Chie Inoue, Takeru Fukunaga, Toshihide Ogawa
PURPOSE: The characteristics of fetal thyroid on magnetic resonance (MR) imaging, including normal thyroid and disorders other than goiter have not been fully evaluated. Our aim was to assess fetal thyroid using three dimensional (3D) gradient echo (GRE) T1-weighted MR imaging and to examine the usefulness of this modality. MATERIALS AND METHODS: The study included 27 3D GRE T1-weighted images from 26 fetuses. The largest possible region of interest (ROI) within the thyroid at the slice level depicting the thyroid was manually defined and three circular ROIs on neck muscle were manually defined on the image slices showing the highest signal intensity (SI) of the thyroid...
December 26, 2016: Magnetic Resonance in Medical Sciences: MRMS
https://www.readbyqxmd.com/read/27977016/heart-sounds-at-home-feasibility-of-an-ambulatory-fetal-heart-rhythm-surveillance-program-for-anti-ssa-positive-pregnancies
#5
B F Cuneo, A J Moon-Grady, S-E Sonesson, S Levasseur, L Hornberger, M T Donofrio, A Krishnan, A Szwast, L Howley, D W Benson, E Jaeggi
OBJECTIVE: Fetuses exposed to anti-SSA (Sjögren's) antibodies are at risk of developing irreversible complete atrioventricular block (CAVB), resulting in death or permanent cardiac pacing. Anti-inflammatory treatment during the transition period from normal heart rhythm (fetal heart rhythm (FHR)) to CAVB (emergent CAVB) can restore sinus rhythm, but detection of emergent CAVB is challenging, because it can develop in ⩽24 h. We tested the feasibility of a new technique that relies on home FHR monitoring by the mother, to surveil for emergent CAVB...
December 15, 2016: Journal of Perinatology: Official Journal of the California Perinatal Association
https://www.readbyqxmd.com/read/27860542/successful-fetal-tele-echo-at-a-small-regional-hospital
#6
Julianna Brown, Brian Holland
BACKGROUND: Prenatal diagnosis of complex congenital heart disease (CHD) has been shown to improve newborn outcomes. The rate of prenatal diagnosis and access to fetal echocardiography vary widely across the United States. INTRODUCTION: A clinical fetal tele-echo service was established at King's Daughters Medical Center (KDMC) in Ashland, KY, a region in eastern Kentucky that is 3 h from the nearest congenital heart surgeon. The aim of this study was to determine if fetal tele-echo utilizing local sonographers at a small regional hospital can accurately and efficiently identify fetuses with complex CHD...
November 18, 2016: Telemedicine Journal and E-health: the Official Journal of the American Telemedicine Association
https://www.readbyqxmd.com/read/27790130/a-case-of-hydranencephaly-in-which-ophthalmic-examinations-were-performed
#7
Shohei Eda, Tomoko Terai, Yuko Nishikawa, Masahiro Tonari, Teruyo Kida, Hidehiro Oku, Jun Sugasawa, Shuichi Shimakawa, Masashi Hasegawa, Tohru Ogihara, Tsunehiko Ikeda
PURPOSE: We performed ophthalmic examinations, including optical coherence tomography (OCT), on a case diagnosed with hydranencephaly. CASE REPORT: This case involved a female infant born at the gestational age of 35 weeks and 4 days, with the birth weight of 2,152 g, who was one of monochorionic diamniotic twins, and the identical twin died in utero at the gestational age of 24 weeks. After that, examination by fetal echo indicated that she had microcephaly and ventriculomegaly...
September 2016: Case Reports in Ophthalmology
https://www.readbyqxmd.com/read/27699879/3d-in-utero-quantification-of-t2-relaxation-times-in-human-fetal-brain-tissues-for-age-optimized-structural-and-functional-mri
#8
Anna I Blazejewska, Sharmishtaa Seshamani, Susan K McKown, Jason S Caucutt, Manjiri Dighe, Christopher Gatenby, Colin Studholme
PURPOSE: Maximization of the blood oxygen level-dependent (BOLD) functional MRI (fMRI) contrast requires the echo time of the MR sequence to match the T2* value of the tissue of interest, which is expected to be higher in the fetal brain compared with the brain of a child or an adult. METHODS: T2* values of the cortical plate/cortical gray matter tissue in utero in healthy fetuses from mid-gestation onward (20-36 gestational weeks) were measured using 3D T2* maps calculated from 2D dual-echo T2*-weighted data corrected for between-slice motion and reconstructed in 1...
October 3, 2016: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/27651614/evaluation-of-referral-pattern-for-fetal-echocardiography-at-a-tertiary-care-center-in-northern-india-and-its-implications
#9
Anupama Nair, S Radhakrishnan
OBJECTIVE: To determine the referral pattern for fetal echocardiography (FE) at our tertiary referral center for pediatric cardiac care in northern India. We also aimed to determine the incidence of CHD in each group and intend to highlight the need of identifying the various risk factors and appropriate timely referral of patients for detailed evaluation. METHODS: This is a prospective study including 201 consecutive patients referred for fetal echo to our center...
October 2016: Journal of Obstetrics and Gynaecology of India
https://www.readbyqxmd.com/read/27647344/ep05-09-the-echo-image-characteristics-of-fetal-cardiac-tumour-by-echocardiography
#10
T Zhu, J Li, Y Zhu, Y Wang, P Xu, Y Sun, Z Wang, S Pang
No abstract text is available yet for this article.
September 2016: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/27539165/the-natural-history-of-fetal-long-qt-syndrome
#11
Bettina F Cuneo, Janette F Strasburger, Ronald T Wakai
INTRODUCTION: Fetal magnetocardiography (fMCG), the magnetic analog of ECG, has provided invaluable insight into the mechanisms of fetal arrhythmias. In the past 15years, we have evaluated over 300 fetuses with arrhythmia by fMCG. We review the unique characteristics and natural history of the long QT syndrome (LQTS) rhythms. METHODS: We reviewed the fMCGs of subjects referred with suspected LQTS based on either a positive family history or echo diagnosis of the LQTS rhythms (sinus bradycardia, ventricular tachycardia, or 2:1 AV conduction) to the Biomagnetism laboratory in the Department of Medical Physics, UW-Madison...
November 2016: Journal of Electrocardiology
https://www.readbyqxmd.com/read/27521762/an-exploration-of-the-potential-utility-of-fetal-cardiovascular-mri-as-an-adjunct-to-fetal-echocardiography
#12
David F A Lloyd, Joshua F P van Amerom, Kuberan Pushparajah, John M Simpson, Vita Zidere, Owen Miller, Gurleen Sharland, Joanna Allsop, Matthew Fox, Maelene Lohezic, Maria Murgasova, Christina Malamateniou, Jo V Hajnal, Mary Rutherford, Reza Razavi
OBJECTIVES: Fetal cardiovascular magnetic resonance imaging (MRI) offers a potential alternative to echocardiography, although in practice, its use has been limited. We sought to explore the need for additional imaging in a tertiary fetal cardiology unit and the usefulness of standard MRI sequences. METHODS: Cases where the diagnosis was not fully resolved using echocardiography were referred for MRI. Following a three-plane localiser, fetal movement was assessed with a balanced steady-state free precession (bSSFP) cine...
October 2016: Prenatal Diagnosis
https://www.readbyqxmd.com/read/27440228/the-value-of-cardiac-magnetic-resonance-in-the-diagnosis-of-fetal-aortic-arch-anomalies
#13
Xu Li, Xue-Lei Li, Kefei Hu, Chuangao Yin
BACKGROUND: Here we report our preliminary experience of using fetal cardiovascular magnetic resonance (CMR) imaging, particularly with transverse views at the level of the aortic arch, in the diagnosis of aortic arch anomalies. MATERIALS AND METHODS: Between January 2013 and December 2015, routine prenatal obstetric ultrasound (US), echocardiography (Echo) and 1.5 T CMR were performed on approximately 600 pregnant women. CMR included balanced fast field echo and single-shot fast spin echo sequences...
July 20, 2016: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/27424373/acute-fatty-liver-of-pregnancy-analysis-on-the-diagnosis-and-treatment-of-15-cases
#14
Guoyan Liu, Xiaobin Shang, Bibo Yuan, Cha Han, Yingmei Wang
OBJECTIVE: To describe our experience with the diagnosis and management of acute fatty liver of pregnancy (AFLP). STUDY DESIGN: The medical records of pregnant women with AFLP were reviewed for symptoms, laboratory findings, treatment, and maternal and fetal outcomes during a 10-year period between January 2003 and December 2013. RESULTS: During the study period 15 women had AFLP as their discharge diagnosis. The mean gestational age at onset was 36 ± 1 weeks...
May 2016: Journal of Reproductive Medicine
https://www.readbyqxmd.com/read/27298076/a-liposomal-gd-contrast-agent-does-not-cross-the-mouse-placental-barrier
#15
Anil N Shetty, Robia Pautler, Ketan Ghagahda, David Rendon, Haijun Gao, Zbigniew Starosolski, Rohan Bhavane, Chandreshkumar Patel, Ananth Annapragada, Chandrasekhar Yallampalli, Wesley Lee
The trans-placental permeability of liposomal Gadolinium (Gd) nanoparticle contrast agents was evaluated in a pregnant mouse model. Pregnant Balb/c mice at 16.5 (±1) days of gestation were imaged using a 3D Spoiled Gradient Echo method at 9.4 T using two contrast agents: a clinically approved Gd chelate, Multihance(®) (gadobenate dimeglumine), and a novel experimental liposomal Gd agent. A Dynamic Contrast Enhancement (DCE) protocol was used to capture the dynamics of contrast entry and distribution in the placenta, and clearance from circulation...
2016: Scientific Reports
https://www.readbyqxmd.com/read/27292912/utility-of-fetal-magnetic-resonance-imaging-in-assessing-the-fetus-with-cardiac-malposition
#16
Lasya Gaur, Lauren Talemal, Dorothy Bulas, Mary T Donofrio
OBJECTIVE: Abnormal cardiac axis and/or malposition prompts evaluation of congenital heart disease; however, etiology may be difficult to clarify using obstetrical ultrasound or fetal echocardiography (echo) alone. We aimed to use fetal magnetic resonance imaging (MRI) as a complementary tool to identify causes of cardiac malposition. METHODS: Review of fetuses diagnosed with cardiac malposition by fetal ultrasound and echo was performed. Etiology was classified as either because of heterotaxy syndrome or extracardiac masses...
August 2016: Prenatal Diagnosis
https://www.readbyqxmd.com/read/27182129/neonatal-mortality-in-dogs-prognostic-value-of-doppler-ductus-venosus-waveform-evaluation-preliminary-results
#17
Gabriele Barella, Stefano Faverzani, Massimo Faustini, Debora Groppetti, Alessandro Pecile
AIM: To define the prognostic value of Doppler ultrasonographic morphology of ductus venosus (DV) waveform on canine neonatal mortality. MATERIALS AND METHODS: Fifty-four healthy pregnant bitches underwent fetal ultrasonographic assessment. The DV waveforms were classified as diphasic (dDVw) or triphasic (tDVw) and compared with neonatal mortality. RESULTS: Ninety-three fetuses were evaluated. Twenty fetuses belonged to litters with neonatal mortality, in which tDVw was observed...
April 2016: Veterinary World
https://www.readbyqxmd.com/read/27166710/prenatal-assessment-of-pulmonary-maturity-on-3-d-ultrasound
#18
Sha-Sha Wang, Xue-Ye Tian, Hong-Wei Yan, Ting Yuan, Xiao-Ye Zheng, Zhen Han
AIM: The aim of this study was to assess the feasibility and accuracy of 3-D ultrasound indices to evaluate fetal lung maturity, and to establish a normal reference for fetal lung volume (FLV) and fetal lung-to-liver intensity ratio (FLLIR) in a Chinese population. METHODS: A total of 1022 pregnant women with singleton pregnancy were prospectively studied between June 2008 to June 2011. Ultrasound examination was performed. The breathing-related nasal fluid flow (BRNFF) spectrum, FLV, pulmonary artery blood flow parameters, and echo intensity of the lung were calculated...
September 2016: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/27159847/fetal-lung-apparent-diffusion-coefficient-measurement-using-diffusion-weighted-mri-at-3-tesla-correlation-with-gestational-age
#19
Onur Afacan, Ali Gholipour, Robert V Mulkern, Carol E Barnewolt, Judy A Estroff, Susan A Connolly, Richard B Parad, Sigrid Bairdain, Simon K Warfield
PURPOSE: To evaluate the feasibility of using diffusion-weighted magnetic resonance imaging (DW-MRI) to assess the fetal lung apparent diffusion coefficient (ADC) at 3 Tesla (T). MATERIALS AND METHODS: Seventy-one pregnant women (32 second trimester, 39 third trimester) were scanned with a twice-refocused Echo-planar diffusion-weighted imaging sequence with 6 different b-values in 3 orthogonal diffusion orientations at 3T. After each scan, a region-of-interest (ROI) mask was drawn to select a region in the fetal lung and an automated robust maximum likelihood estimation algorithm was used to compute the ADC parameter...
December 2016: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/27147810/mri-verification-of-a-case-of-huge-infantile-rhabdomyoma
#20
Naser Ramadani, Kreshnike Dedushi Kreshnike, Sefedin Muçaj, Serbeze Kabashi, Astrit Hoxhaj, Naim Jerliu, Ramush Bejiçi
INTRODUCTION: Cardiac rhabdomyoma is type of benign myocardial tumor that is the most common fetal cardiac tumor. Cardiac rhabdomyomas are usually detected before birth or during the first year of life. They account for over 60% of all primary cardiac tumors. CASE REPORT: A 6 month old child with coughing and obstruction in breathing, was hospitalized in the Pediatric Clinic in UCCK, Pristine. The difficulty of breathing was heard and the pathological noise of the heart was noticed from the pediatrician...
April 2016: Acta Informatica Medica: AIM
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