Results 31 to 40 of about 217,838 (342)
Autism risk classification using placental chorionic surface vascular network features
BMC Medical Informatics and Decision Making, 2017 Background Autism Spectrum Disorder (ASD) is one of the fastest-growing developmental disorders in the United States. It was hypothesized that variations in the placental chorionic surface vascular network (PCSVN) structure may reflect both the overall ...
Jen-Mei Chang +12 more
doaj +1 more source
Volumetric Parameterization of the Placenta to a Flattened Template [PDF]
arXiv, 2021 We present a volumetric mesh-based algorithm for parameterizing the placenta to a flattened template to enable effective visualization of local anatomy and function. MRI shows potential as a research tool as it provides signals directly related to placental function.
arxiv
Consistency Regularization Improves Placenta Segmentation in Fetal EPI MRI Time Series [PDF]
arXiv, 2023 The placenta plays a crucial role in fetal development. Automated 3D placenta segmentation from fetal EPI MRI holds promise for advancing prenatal care. This paper proposes an effective semi-supervised learning method for improving placenta segmentation in fetal EPI MRI time series.
arxiv
Combined Diffusion-Relaxometry MRI to Identify Dysfunction in the Human Placenta [PDF]
Magn Reson Med. 2019;1-12, 2018 Purpose: A combined diffusion-relaxometry MR acquisition and analysis pipeline for in-vivo human placenta, which allows for exploration of coupling between T2* and apparent diffusion coefficient (ADC) measurements in a sub 10 minute scan time. Methods: We present a novel acquisition combining a diffusion prepared spin-echo with subsequent gradient ...
arxiv +1 more source
International Journal of Hyperthermia, 2021 Objective To compare the safety and efficacy of high-intensity focused ultrasound (HIFU) followed by hysteroscopic resection for different placenta accreta spectrum disorders.
Zhenjiang Lin +13 more
doaj +1 more source
Automatic Segmentation of the Placenta in BOLD MRI Time Series [PDF]
arXiv, 2022 Blood oxygen level dependent (BOLD) MRI with maternal hyperoxia can assess oxygen transport within the placenta and has emerged as a promising tool to study placental function. Measuring signal changes over time requires segmenting the placenta in each volume of the time series.
arxiv
Retroviruses and the Placenta [PDF]
Current Biology, 2012 Retroviruses are often expressed in the placenta. Placental expression probably evolved to facilitate retroviral transmission from mother to offspring and from offspring to mother. In the process, the placenta became a site where retroviral genes were 'domesticated' to serve adaptive functions in the host, including the manipulation of maternal ...
openaire +4 more sources
Relationship between Abnormal Placenta and Obstetric Outcomes: A Meta-Analysis
Biomedicines, 2023 The placenta has several crucial physiological functions that help maintain a normal pregnancy. Although approximately 2–4% of pregnancies are complicated by abnormal placentas, obstetric outcomes remain understudied.
Shinya Matsuzaki +12 more
doaj +1 more source
Exploration on the relationship between hypoxia inducible factor-1α and morbidly adherent placenta
Clinical and Experimental Obstetrics & Gynecology, 2020 Objective: This study aims to explore the role of hypoxia inducible factor-1α (HIF-1α) in morbidly adherent placenta (MAP). Materials and Methods: Ten pregnant women with placenta increta, 20 pregnant women with placenta previa, and 30 normal pregnant ...
J.Y. Yan +6 more
doaj +1 more source
Optimal villi density for maximal oxygen uptake in the human placenta [PDF]
J. Theor. Biol. 364 (2015), 383-96, 2014 We present a stream-tube model of oxygen exchange inside a human placenta functional unit (a placentone). The effect of villi density on oxygen transfer efficiency is assessed by numerically solving the diffusion-convection equation in a 2D+1D geometry for a wide range of villi densities.
arxiv +1 more source