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https://www.readbyqxmd.com/read/30188581/placental-volume-at-11-to-14-gestational-weeks-in-pregnancies-complicated-with-fetal-growth-restriction-and-preeclampsia
#1
Ioannis Papastefanou, Charalambos Chrelias, Charalambos Siristatidis, Dimitra Kappou, Makarios Eleftheriades, Dimitrios Kassanos
OBJECTIVE: The study aims to evaluate the predictive value of first trimester placental volume in pregnancies destined to develop fetal growth restriction (FGR) and preeclampsia (PE). METHODS: Prospective observational study including placentas from 34 FGR, 12 PE, 15 GH (gestational hypertension) pregnancies, and 265 controls. Placental volume (PV) was obtained using VOCAL technique, and a z score was calculated (z-PV). The association of PV with other first trimester variables and maternal characteristics was assessed with Spearman's correlation...
September 6, 2018: Prenatal Diagnosis
https://www.readbyqxmd.com/read/29393218/value-of-placental-volume-and-vascular-flow-indices-as-predictors-of-early-and-late-preeclampsia-at-first-trimester
#2
Nieves L González-González, Enrique González Dávila, Erika Padrón, Marina Armas Gonzalez, Walter Plasencia
INTRODUCTION: We evaluated the utility of placental volume and three-dimensional (3D) vascular flow indices to predict early and late preeclampsia. MATERIAL AND METHODS: In 1,004 pregnancies attending routine care, we recorded first-trimester screening program for aneuploidy (FTSA) parameter and measured uterine artery pulsatility index (uterine-a PI). Placental volume and vascular flow indices were obtained using 3D power Doppler and VOCAL techniques. RESULTS: Placental volume was lower and uterine-a PI was higher in both early and late preeclampsia groups versus nonaffected pregnancies...
2018: Fetal Diagnosis and Therapy
https://www.readbyqxmd.com/read/28164322/reference-ranges-of-placental-volume-measured-by-virtual-organ-computer-aided-analysis-between-10-and-14-weeks-of-gestation
#3
Daranee Meengeonthong, Suchaya Luewan, Supatra Sirichotiyakul, Theera Tongsong
OBJECTIVE: To establish the reference ranges of the placental volume between 10 and 14 weeks of gestation of Thai fetuses. METHODS: The placental volumes were acquired in normal pregnancies between 10 and 14 weeks of gestation using transabdominal three-dimensional ultrasound. The placental volume was then analyzed using VOCAL (virtual organ computer-aided analysis) technique with a rotation angle of 30°. The measured values were regressed to identify the best-fit model...
May 2017: Journal of Clinical Ultrasound: JCU
https://www.readbyqxmd.com/read/28089506/evaluation-of-the-predictive-value-of-placental-vascularisation-indices-derived-from-3-dimensional-power-doppler-whole-placental-volume-scanning-for-prediction-of-pre-eclampsia-a-systematic-review-and-meta-analysis
#4
REVIEW
K A Eastwood, C Patterson, A J Hunter, D R McCance, I S Young, V A Holmes
Pre-eclampsia remains a leading cause of maternal and fetal morbidity and mortality. This systematic review aims to evaluate the ability of placental vascularisation indices (PVIs) derived from 3D power Doppler whole placental volume scanning to predict early, late and any-onset pre-eclampsia (PE). The following databases were searched: MEDLINE, EMBASE and Web of Science. Studies selected for inclusion measured PVIs: Vascularisation Index (%) (VI) and/or Flow Index (FI) and/or Vascularisation Flow Index (VFI) derived from 3D power Doppler whole placental volume scanning via Virtual Organ Computer-aided Analysis (VOCAL) technique prior to diagnosis of PE...
March 2017: Placenta
https://www.readbyqxmd.com/read/27923276/association-between-maternal-circulating-25-hydroxyvitamin-d-concentration-and-placental-volume-in-the-first-trimester
#5
Çiğdem Yayla Abide, Meryem Kurek Eken, Işıl Turan, Enis Özkaya, Oya Pekin, Ateş Karateke
OBJECTIVES: We aimed to assess placental volume and placental mean gray value in vitamin D deficiency and healthy placentas in the first trimester of pregnancy using three-dimensional (3D) ultrasonography (USG) and Virtual Organ Computer-aided Analysis (VOCAL). METHODS: This prospective cross sectional study comprised 274 patients, divided into two groups according to the presence or absence of vitamin D deficiency (<20 ng/ml deficient, n = 153, >20 ng/ml not deficient, n= 121) in the first trimester of pregnancy...
December 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/27729965/reproducibility-of-3-dimensional-ultrasound-measurements-of-placental-volume-at-gestational-ages-11-14-weeks
#6
M L Larsen, K V Naver, M M Kjaer, F S Jorgensen, L Nilas
OBJECTIVE: To evaluate the reproducibility of placental volume using three-dimensional ultrasound. METHODS: The VOCAL (Virtual Organ Computer-aided AnaLysis) technique involves rotating an image of an object along an established axis using predefined angles. This provides a number of sections to measure manually, resulting in the object being displayed with an estimated placental volume. Four predefined angles 30°, 15°, 9°, and 6°, creating 6, 12, 20 and 30 sections, respectively...
December 28, 2015: Facts, Views & Vision in ObGyn
https://www.readbyqxmd.com/read/27480401/effect-of-micronized-progesterone-on-fetal-placental-volume-in-first-trimester-threatened-abortion
#7
RANDOMIZED CONTROLLED TRIAL
Mert Turgal, Emine Aydin, Ozgur Ozyuncu
PURPOSE: To compare the effect of oral micronized progesterone (OMP) on the first-trimester fetal and placental volumes using three-dimensional ultrasonography and extended imaging virtual organ computer-aided analysis (XI VOCAL) method in threatened abortion. METHODS: This randomized controlled trial enrolled women with threatened abortion and a singleton pregnancy from 6-8 6/7 weeks of gestation. A total of 60 women with threatened abortion were randomly assigned to one of two groups: OMP (400 mg/day) (n = 30) and control groups (n = 30)...
January 2017: Journal of Clinical Ultrasound: JCU
https://www.readbyqxmd.com/read/27384326/short-term-exposure-to-urban-air-pollution-and-influences-on-placental-vascularization-indexes
#8
Karen Hettfleisch, Lisandra Stein Bernardes, Mariana Azevedo Carvalho, Luciana Duzolina Manfré Pastro, Sandra Elisabete Vieira, Silvia R D M Saldiva, Paulo Saldiva, Rossana Pulcineli Vieira Francisco
BACKGROUND: It has been widely demonstrated that air pollution can affect human health and that certain pollutant gases lead to adverse obstetric outcomes, such as preeclampsia and fetal growth restriction. OBJECTIVES: We evaluated the influence of individual maternal exposure to air pollution on placental volume and vascularization evaluated in the first trimester of pregnancy. METHODS: This was a cross-sectional study on low-risk pregnant women living in São Paulo, Brazil...
April 2017: Environmental Health Perspectives
https://www.readbyqxmd.com/read/27294274/relationship-between-plasma-d-dimer-concentration-and-three-dimensional-ultrasound-placental-volume-in-women-at-risk-for-placental-vascular-diseases-a-monocentric-prospective-study
#9
Cécile Fanget, Céline Chauleur, Amandine Stadler, Emilie Presles, Marie-Noëlle Varlet, Jean-Christophe Gris, Tiphaine Raia-Barjat
INTRODUCTION: The aim of this study was to correlate placental volumes deduced from three-dimensional ultrasound and virtual organ computer-aided analysis (VOCAL) software with systemic concentrations of D-dimer and soluble endothelial protein C receptor (sEPCR). METHODS: This was a monocentric experimental prospective study conducted from October 2008 to July 2009. Forty consecutive patients at risk of placental vascular pathology (PVP) recurrence or occurrence were included...
2016: PloS One
https://www.readbyqxmd.com/read/26395429/first-trimester-placental-volume-and-vascular-indices-in-pregnancies-complicated-by-preeclampsia
#10
Walter Plasencia, Enrique González-Dávila, Alejandra González Lorenzo, Marina Armas-González, Erika Padrón, Nieves L González-González
OBJECTIVE: To analyze placental volume and vascularization at first trimester in women with pre-eclampsia, and secondarily, the effect of maternal characteristics on placental development and perinatal outcomes. METHODS: This was a prospective cohort study including women seen between 11 and 14 weeks of pregnancy. Biophysical and biochemical markers included in the screening program for aneuploidy were recorded. Placental volume and vascularization indices were obtained using three-dimensional power-Doppler imaging and Virtual Organ Computer-aided Analysis (VOCAL) techniques...
December 2015: Prenatal Diagnosis
https://www.readbyqxmd.com/read/26341043/3-d-ultrasound-segmentation-of-the-placenta-using-the-random-walker-algorithm-reliability-and-agreement
#11
Gordon N Stevenson, Sally L Collins, Jane Ding, Lawrence Impey, J Alison Noble
Volumetric segmentation of the placenta using 3-D ultrasound is currently performed clinically to investigate correlation between organ volume and fetal outcome or pathology. Previously, interpolative or semi-automatic contour-based methodologies were used to provide volumetric results. We describe the validation of an original random walker (RW)-based algorithm against manual segmentation and an existing semi-automated method, virtual organ computer-aided analysis (VOCAL), using initialization time, inter- and intra-observer variability of volumetric measurements and quantification accuracy (with respect to manual segmentation) as metrics of success...
December 2015: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/25959054/placental-volumetry-by-2-d-sonography-with-a-new-mathematical-formula-prospective-study-on-the-shell-of-a-spherical-sector-model
#12
Zoltan Kozinszky, Andrea Surányi, Hajnalka Péics, András Molnár, Attila Pál
The aim of this study was to determine the utility of a new mathematical model in volumetric assessment of the placenta using 2-D ultrasound. Placental volumetry was performed in a prospective cross-sectional survey by virtual organ computer-aided analysis (VOCAL) with the help of a shell-off method in 346 uncomplicated pregnancies according to STROBE (Strengthening the Reporting of Observational Studies in Epidemiology) guidelines. Furthermore, placental thickness, length and height were measured with the 2-D technique to estimate placental volume based on the mathematical formula for the volume of "the shell of the spherical sector...
August 2015: Ultrasound in Medicine & Biology
https://www.readbyqxmd.com/read/25731652/three-dimensional-ultrasonographic-placental-volume-in-gestational-diabetes-mellitus
#13
Halil Gursoy Pala, Burcu Artunc-Ulkumen, Faik Mumtaz Koyuncu, Yesim Bulbul-Baytur
OBJECTIVES: We aimed to evaluate the placental volume and placental mean gray value in gestational diabetes mellitus (GDM) and healthy placentas using three-dimensional (3D) ultrasound and Virtual Organ Computer-aided AnaLysis (VOCAL). METHODS: This case-control prospective study consisted of 39 singleton pregnancies complicated by GDM and 42 healthy singleton pregnancies matched for gestational age, maternal age and parity. Placental volume and placental volumetric mean gray values were evaluated...
2016: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/25409488/the-alteration-in-placental-volume-and-placental-mean-grey-value-in-growth-restricted-pregnancies-assessed-by-3d-ultrasound-growth-restriction-3d-ultrasonography
#14
B Artunc Ulkumen, H G Pala, Y Uyar, F M Koyuncu, Y Bulbul Baytur
We aimed to evaluate the volumetric and echogenic alterations in placentas between the intrauterine growth restriction (IUGR) and normal pregnancies using three-dimensional ultrasound and virtual organ computer-aided analysis (VOCAL) software. This case-control prospective study consisted of 48 singleton pregnancies complicated by IUGR and 60 healthy singleton pregnancies matched for maternal age, gestational age and parity. Placental volume (PV) and placental volumetric mean grey values (MGV) were evaluated...
2015: Journal of Obstetrics and Gynaecology: the Journal of the Institute of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/25303033/three-dimensional-ultrasound-does-not-improve-diagnosis-of-retained-placental-tissue-compared-to-two-dimensional-ultrasound
#15
COMPARATIVE STUDY
Johanna Belachew, Ove Axelsson, Karin Eurenius, Ajlana Mulic-Lutvica
The study objective was to improve ultrasonic diagnosis of retained placental tissue by measuring the volume of the uterine body and cavity using three-dimensional (3D) ultrasound. Twenty-five women who were to undergo surgical curettage due to suspected retained placental tissue were included. The volume of the uterine body and cavity was measured using the VOCAL imaging program. Twenty-one women had retained placental tissue histologically verified. Three of these had uterine volumes exceeding the largest volume observed in the normal puerperium...
January 2015: Acta Obstetricia et Gynecologica Scandinavica
https://www.readbyqxmd.com/read/25254419/three-dimensional-placental-volume-and-mean-grey-value-normal-ranges-in-a-turkish-population-and-correlation-with-maternal-serum-biochemistry-and-doppler-parameters
#16
H G Pala, B Artunc Ulkumen, Y Uyar, F M Koyuncu, Y Bulbul Baytur
The aim of this study is to evaluate the relationship between three-dimensional (3D) ultrasound measurements of placenta at 11-13(6) weeks' gestation and maternal serum levels of pregnancy associated plasma protein-A (PAPP-A), free beta human chorionic gonadotrophin (fβhCG), Doppler parameters in early pregnancy. This prospective study consisted of 334 singleton pregnancies at 11-13(6) weeks' gestation. Placental volume and placental volumetric mean grey values were evaluated. The placental volume (cm(3)) was analysed using the Virtual Organ Computer-aided AnaLysis (VOCAL) imaging program and 3D histogram was used to calculate the volumetric mean grey value (%)...
April 2015: Journal of Obstetrics and Gynaecology: the Journal of the Institute of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/25117590/a-technique-for-the-estimation-of-fractional-moving-blood-volume-by-using-three-dimensional-power-doppler-us
#17
Gordon N Stevenson, Sally L Collins, Alec W Welsh, Lawrence W Impey, J Alison Noble
PURPOSE: To (a) demonstrate an image-processing method that can automatically measure the power Doppler signal in a three-dimensional ( 3D three-dimensional ) ultrasonographic (US) volume by using the location of organs within the image and (b) compare 3D three-dimensional fractional moving blood volume ( FMBV fractional moving blood volume ) results with commonly used, unstandardized measures of 3D three-dimensional power Doppler by using the human placenta as the organ of interest. MATERIALS AND METHODS: This is a retrospective study of scans obtained as part of a prospective study of imaging placental biomarkers with US, performed with ethical approval and written informed consent...
January 2015: Radiology
https://www.readbyqxmd.com/read/25074797/assessment-of-placental-volume-and-vascularization-at-11-14-weeks-of-gestation-in-a-taiwanese-population-using-three-dimensional-power-doppler-ultrasound
#18
Hsing-I Wang, Ming-Jie Yang, Peng-Hui Wang, Yi-Cheng Wu, Chih-Yao Chen
BACKGROUND: The placental volume and vascular indices are crucial in helping doctors to evaluate early fetal growth and development. Inadequate placental volume or vascularity might indicate poor fetal growth or gestational complications. This study aimed to evaluate the placental volume and vascular indices during the period of 11-14 weeks of gestation in a Taiwanese population. METHODS: From June 2006 to September 2009, three-dimensional power Doppler ultrasound was performed in 222 normal pregnancies from 11-14 weeks of gestation...
December 2014: Journal of the Chinese Medical Association: JCMA
https://www.readbyqxmd.com/read/25010115/the-assessment-of-placental-volume-and-mean-gray-value-in-preeclamptic-placentas-by-using-three-dimensional-ultrasonography
#19
Burcu Artunc Ulkumen, Halil Gursoy Pala, Yildiz Uyar, Faik Mumtaz Koyuncu, Yesim Bulbul Baytur
OBJECTIVES: We aimed to evaluate the placental volume and placental mean gray value in preeclampsia and healthy placentas by using three-dimensional (3D) ultrasonography and Virtual Organ Computer-aided AnaLysis (VOCAL). METHODS: This case-control prospective study consisted of 27 singleton pregnancies complicated by preeclampsia and 54 healthy singleton pregnancies matched for gestational age, maternal age and parity. Placental volume and placental volumetric mean gray values were evaluated...
June 2015: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/24797969/quantitative-assessment-of-placental-vasculature-and-placental-volume-in-normal-pregnancies-with-the-use-of-3d-power-doppler
#20
Michał Pomorski, Mariusz Zimmer, Tomasz Fuchs, Jerzy Florjanski, Maria Pomorska, Marek Tomialowicz, Ewa Milnerowicz-Nabzdyk
PURPOSE: The aim of the study was to determine reference values for placental vascular indices and placental volume according to gestational age. MATERIAL/METHODS: The assessment of placental vascular indices and placental volume using 3D Power Doppler and the Virtual Organ Computer-aided Analysis (VOCAL) technique was performed on 100 normal fetuses between 22 and 41 weeks of gestation. In this study the method of the individual setting of the power Doppler gain value was used...
March 2014: Advances in Medical Sciences
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