Search Results
Results 251 - 300 of 1246
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Provis J M - - 2008
OBJECTIVE: To study the development of the perifoveal retinal vasculature. METHODS: We studied 7 retinas aged between 26 weeks' gestation and 1 week postnatal (41 weeks' gestation). Sections were imaged using high-resolution digital photography and blood vessel profiles identified at 200% to 300% magnification. Flat mounts were immunolabeled using antibodies ...
Vilain Anne - - 2008
PURPOSE: To determine the validity of pregnancy variables recorded in administrative databases of Quebec using patient medical charts as the gold standard among asthmatic pregnant women. METHODS: Three administrative databases were linked and provided information on maternal, pregnancy and infant characteristics for 726 pregnant asthmatic women who delivered in 1990-2000. ...
Jaffe Tracy A - - 2008
OBJECTIVE: The objective of our study was to correlate the estimated fetal absorbed radiation dose derived by directly measured uterine doses in the early first trimester and the volume CT dose index (CTDI(vol)) for 16-MDCT of the maternal chest, abdomen, and pelvis. MATERIALS AND METHODS: Estimated absorbed fetal dose was ...
Verburg B O - - 2008
OBJECTIVES: Correct assessment of gestational age and fetal growth is essential for optimal obstetric management. The objectives of this study were, first, to develop charts for ultrasound dating of pregnancy based on crown-rump length and biparietal diameter and, second, to derive reference curves for normal fetal growth based on biparietal ...
Amer Hussein A - - 2008
This study was conducted using B-mode transrectal (TR) and transabdominal (TA) ultrasonography to determine early pregnancy and fetometry. A total of 110 does aged between 8 and 36 months were used. The detection of early pregnancy and foetal number was measured. The relationship between gestation age and crown-rump length (CRL) ...
Hatab Mustapha R - - 2008
PURPOSE: To quantify fetal cerebellar growth by measuring cerebellar volumes of normal fetuses throughout gestation with MRI. MATERIALS AND METHODS: A total of 93 fetuses with normal brains ranging in age from 16 to 40 gestational weeks were included in the study. Standard fetal biometric measurements were made on a ...
Mercer Brian M - - 2008
OBJECTIVE: The objective of the study was to determine whether small fetal size before 20 weeks' gestation is associated with preterm birth (PTB), low birthweight (LBW), and poor fetal growth. STUDY DESIGN: A total of 4405 singleton pregnancies at 10-19 weeks' gestation (GA) based on a known last menstrual period ...
Odeh Marwan - - 2008
OBJECTIVE: The purpose of this study was to measure the volumes of the gestational sac and amniotic sac in normal pregnancies during the first trimester with 3-dimensional sonography to prepare nomograms. METHODS: One hundred fifty-one patients between 6 and 12 weeks' gestation were studied. Nine aborted and were excluded, leaving ...
Lu Szu-Ching - - 2008
OBJECTIVE: Fetuses from different populations may show different growth patterns. In obstetrics, fetal abdominal circumference (AC) is a very useful index for assessing fetal growth. In this study, we attempted to establish the normal fetal growth curves of AC in an Asian population in South Taiwan. MATERIALS AND METHODS: We ...
Scioscia M - - 2008
OBJECTIVE: The accuracy of current formulae for the sonographic estimation of fetal weight (EFW) is compromised by significant intra- and interobserver variability of biometrical measurements, particularly circumferences. The aim of this study was to assess the reliability of the linear measurement of mid-thigh soft-tissue thickness (STT) and to derive a ...
Leung T N - - 2008
OBJECTIVES: To construct new reference charts and equations for fetal biometry in the Hong Kong ethnic Chinese population, and to compare them with existing references from different populations. METHODS: This was a prospective observational study involving 709 women with singleton pregnancies and confirmed gestational age. For the purposes of this ...
Helmbrecht Gary D - - 2008
This case describes recovery of fetal growth restriction in utero after treatment for opiate addiction with the long-acting agent methadone. It is followed by discussions by an addiction medicine specialist followed by a maternal-fetal medicine specialist.
de la Vega Alberto - - 2008
PURPOSE: To evaluate fetal growth parameters throughout gestation in Puerto Rican women and compare them to other mixed U.S. populations. METHODS: Cross-sectional study of 548 patients who met inclusion criteria of Puerto Rican ancestry, no history of drug, alcohol or tobacco use, no identifiable fetal anomalies, normal amniotic fluid and ...
Moura Felipe Nobre - - 2008
BACKGROUND: To construct a normal range for the prenatal nasal bone length (NBL) in Brazilians irrespective to the knowledge of the ethnic genetic background. STUDY DESIGN: We studied 35 human fetuses (20 males, 15 females) ranging from 14 to 22 weeks of gestation. Gestational age (GA), crown-rump length (CRL), foot ...
Beccaglia M - - 2008
The aim of this study was to evaluate the accuracy of ultrasonographic measurement of the deep portion of diencephalo-telencephalic vesicle (DPTV) in the prediction of delivery date in different size bitches. The effects of litter size and foetal sex ratio on the accuracy were also investigated. For this purpose, the ...
Rôlo Líliam Cristine - - 2008
OBJECTIVES: Establish normative data for yolk sac volume (YSV) at 7-10 weeks of gestation assessed by transvaginal three-dimensional ultrasonography (3D-US) using the VOCAL method and analyze its correlation with gestational age (GA) and crown-rump length (CRL). METHODS: A cross-sectional study involving 62 normal pregnancies was performed to assess YSV from ...
Moon Min Hoan - - 2008
OBJECTIVE: To provide reference ranges of the fetal gall bladder in the Korean population. MATERIALS AND METHODS: Fetal gall bladder development was evaluated in well-dated, non-anomalous fetuses in the Korean population between February and April 2003 and the visualization rate and reference values were determined from the obtained data. RESULTS: ...
Barbieri Cristiane - - 2008
BACKGROUND: The objective of this study was to evaluate the capacity of the cross-sectional area and diameter of the umbilical cord, and the area of Wharton's jelly (WJ), to predict abnormalities in estimated fetal weight (EFW) in 20-40 week, low-risk pregnancies. METHODS: A validation study was performed in 1,828 pregnant ...
Jani J - - 2008
OBJECTIVES: To investigate whether the prediction of postnatal outcome of fetuses with isolated congenital diaphragmatic hernia depends on the gestational age at assessment using the fetal observed to expected (O/E) lung area to head circumference ratio (LHR), by comparing the performance of the test at 22-23 weeks with that at ...
Rowan Katrina - - 2008
OBJECTIVE: To study the site and size of the corpus luteum (CL) across the first trimester of pregnancy. DESIGN: Retrospective observational study of 1,806 ultrasound scans performed at 5 to 9 (+6 d) weeks' gestation, as well as a prospective study (n = 313) performed at 10 to 13 (+6 ...
Lubusky Marek - - 2007
BACKGROUND: A comparison of fetal ultrasonographic biometric parameters of the head (head circumference - HC, biparietal diameter - BPD) in breech presented fetuses. METHODS: Ultrasound biometry was performed in accordance with the method presented in the reference tables. In all breech presented fetuses, the HC, BPD and FL (femur length) ...
Shahi Shahriar - - 2007
The purpose of this study was to evaluate the effect of spreader penetration depth on apical microleakage using the lateral compaction method. A total of 96 extracted maxillary central incisors were instrumented using the step-back method, and randomly divided into the following four experimental groups: A) with tug-back and spreader ...
Scott I C - - 2008
Recent studies have demonstrated that gestation length of red deer (Cervus elaphus) is highly variable and influenced by various environmental factors, and this may confer survival advantages for neonates. The current study investigated the relationship between conception date and gestation length to test the hypothesis that within-herd synchrony of red ...
Sherer David M - - 2007
OBJECTIVE: The purpose of this study was to create reference range nomograms of the axial fetal neck circumference (FNC) and fetal neck area (FNA) throughout gestation. METHODS: This prospective cross-sectional study involved pregnant patients between 14 and 40 weeks' gestation. Inclusion criteria consisted of well-established dates (confirmed by early sonography) ...
Miller Russell S - - 2007
OBJECTIVE: The purpose of this study was to evaluate the performance of a sonographic measurement of fetal asymmetry, abdominal diameter minus biparietal diameter (AD - BPD), in the prediction of shoulder dystocia (SD) in a patient population that was unselected for diabetes mellitus (DM) status. METHODS: Patients who underwent sonographic ...
Wagner Steven J - - 2007
Pre-eclampsia is a pregnancy-specific disorder that causes a high degree of maternal and fetal morbidity and mortality. Despite many recent advances in the field, the diagnosis, treatment and prevention of pre-eclampsia remain elusive. The current patent application provides evidence for a marker of pre-eclampsia, a 26.6-kDa polypeptide, which is present ...
Saksiriwuttho Piyamas - - 2007
OBJECTIVES: 1) To construct normal fetal biometry charts of fetal biparietal diameter (BPD), head circumference (HC), abdominal circumference (AC), and femur length (FL) from 14 to 41 weeks of gestation in northeastern Thailand. 2) To compare the results with other studies. STUDY DESIGN: A cross sectional descriptive study. SETTING: Division ...
Shiels William E WE - - 2007
BACKGROUND: US readily demonstrates cartilaginous structures, and static sonography has shown potential in evaluating clubfoot deformity. OBJECTIVE: To investigate the potential of dynamic sonography in the evaluation of the congenital clubfoot. MATERIALS AND METHODS: Sonography was used for static and dynamic stress evaluation of 13 clubfeet and 35 normal feet ...
Tansathit Thitinan - - 2007
OBJECTIVE: To quantify the correlation between gestational age and the normal distance between the insertion of the medial leaflets of the mitral valve and tricuspid valve in Thai fetuses. MATERIAL AND METHOD: A prospective study was constructed using an apical 4-chamber view at end diastole to measure the mitral valve-tricuspid ...
Yunis Khalid A - - 2007
This study aimed to develop fetal growth charts for the population of Greater Beirut, Lebanon, and compare them with previously established references. A survey of consecutive singleton livebirths admitted to normal nurseries and neonatal intensive care units of major hospitals, through the database project of the National Collaborative Perinatal Neonatal ...
Aktürk A S - - 2007
BACKGROUND: It is a common opinion that expansion and darkening in melanocytic nevi may occur during pregnancy. The main problem is that whether it is a usual finding, or it is a condition that requires suspicion about melanoma. OBJECTIVES: It was aimed to find the changes that might occur in ...
Cannie Mieke - - 2007
PURPOSE: Although fetal kidneys have only 10% of their postnatal blood flow, fetal renal development is essential for normal postnatal function. In addition, to our knowledge it is unknown whether human fetal kidney development follows a linear or exponential evolution. We created normative magnetic resonance imaging curves for the kidney ...
Varelas Fotios K - - 2008
OBJECTIVES: To investigate embryonic heart rate (EHR) and yolk sac diameter (YSD) during the first trimester and their role as prognostic markers of first trimester pregnancy outcome. STUDY DESIGN: Prospective cohort study involving 219 women conducted in the 4th Academic Department of Obstetrics and Gynaecology, Aristotle University of Thessaloniki, Greece. ...
Araujo Júnior Edward - - 2007
OBJECTIVE: To verify the correlation of fetal cerebellar volume by three-dimensional ultrasound (3D US) with other indices of fetal growth in normal fetuses. METHODS: This was a longitudinal prospective study involving 52 normal pregnant women between 20 and 32 weeks of gestation. The assessments of the fetal cerebellar volume were ...
Stads Susanne - - 2007
Since impaired gallbladder emptying contributes to gallstone formation, the evaluation of gallbladder motility requires accurate methodology. Recently developed 3-dimensional ultrasonography may take into account various gallbladder shapes more accurately than conventional 2-dimensional ultrasonography. Therefore, volumes of water-filled balloons of various sizes were determined in vitro by 2-dimensional ultrasonography with the ...
Santolaya-Forgas Joaquin J Center for Fetal Medicine and Prenatal Genetics, Brigham and Women's Hospital, Boston, MA 02115, and Department of Obstetrics and Gynecology, Texas Tech University and Health Science Center, Amarillo, USA. - - 2007
The objective of this study was to determine if very early ultrasonographic measurements obtained from human and baboon are comparable. For this purpose, the gestational, amniotic and yolk sacs, embryonic crown rump length (CRL) and heart rate were measured ultrasonographically between 35 and 47 days from the mean day of ...
Hobbs Kyle - - 2007
BACKGROUND: Despite evidence of possible abnormalities during fetal development, no study to date has attempted to investigate fetal brain growth in autism. Fetal head circumference (HC) and biparietal diameter (BPD) are highly correlated with fetal brain volume and are measured on fetal ultrasounds. METHODS: We used retrospective fetal ultrasound data ...
Lenard Z M - - 2007
Different sonographic criteria have been developed to estimate canine fetal age, including fetal mensuration and assessment of fetal organ development. This retrospective study assessed the accuracy of gestational age and litter size predictions in 76 bitches using one of two techniques. The first method used the differential features of fetal ...
Cho J Y - - 2007
OBJECTIVE: To present the normative data of the transverse diameter of the developing fetal thymus. METHODS: In this prospective study, the maximum transverse diameter of the thymus was measured by one sonologist in 376 normal fetuses between 19 and 38 weeks of gestation. We assessed the relationship of the transverse ...
Jung Sung Il - - 2007
OBJECTIVE: To construct new reference charts and equations for fetal biparietal diameter (BPD), head circumference (HC), abdominal circumference (AC) and femur diaphysis length (FDL) from Korean fetuses at 12-40 weeks. METHOD: Prospective cross-sectional data obtained in one center for 5 years from a population of pregnant women undergoing ultrasound examination ...
Szpinda M - - 2007
The present study was performed on 128 spontaneously aborted human foetuses aged 15-34 weeks in order to establish normal values for thoracic aorta dimensions at various gestational ages. Using anatomical dissection, digital-image analysis (the Leica QWin Pro 16 system) and statistical analysis (ANOVA, regression analysis) the growth of the length, ...
Fadl Ahmed - - 2007
For this article, we studied the effects of mouthpiece diameter and flow rate on aerosol penetration efficiency for metered-dose inhaler (MDI) applications. Measurements show that increasing the mouthpiece diameter has a moderate and positive influence on the particle penetration efficiency of the MDI. The particle penetration efficiency increases monotonically with ...
Romano-Riquer S Patricia - - 2007
Development of the perineum as well as the external genitalia is determined by dihydrotestosterone, resulting in a greater anogenital distance (AGD) in males than females. In animal experiments with hormonally active agents, anogenital distance is used as a bioassay of fetal androgen action. Use of anogenital distance in human studies ...
Ali A - - 2008
The aim of the current study was to establish ultrasonic biometric threshold of different fetal parts in buffaloes and to evaluate the feasibility and accuracy of ultrasonic fetal sex determination. Serial ultrasonographic examinations were carried out on twelve pregnant buffalo-cows, during which fetal parts were measured, and fetal sex and ...
Dhammi Ish K - - 2007
Congenital diastasis of the inferior tibiofibular joint is a rare condition of unknown etiology, first described in 1972. Although its clinical presentation at birth is a talipes equinovarus deformity of the foot, it may be associated with limb length discrepancy and other skeletal and visceral abnormalities. We present one such ...
Mittal Pooja - - 2007
OBJECTIVE: Evaluation of fetal cerebral cortex sulcation is important for the pre-natal diagnosis of neuronal migration disorders. Although abnormal sylvian fissure morphologic features are frequently observed in these conditions, the diagnosis of an abnormal sylvian fissure relies on subjective interpretation of ultrasonographic images. This study was performed to develop an ...
Jaddoe Vincent W V - - 2007
The authors examined the associations of maternal smoking in pregnancy with various fetal growth characteristics among 7,098 pregnant women participating in the Generation R Study (2002-2006), a population-based prospective cohort study of pregnant women and their children in Rotterdam, the Netherlands. Maternal smoking was assessed by questionnaires administered in early, ...
Hildebrandt Thomas - - 2007
Elephants have the longest pregnancy of all mammals, with an average gestation of around 660 days, so their embryonic and foetal development have always been of special interest. Hitherto, it has only been possible to estimate foetal ages from theoretical calculations based on foetal mass. The recent development of sophisticated ...
Togni F A - - 2007
OBJECTIVE: To determine the normal cross-sectional areas of the umbilical vein, umbilical artery, and Wharton jelly in healthy pregnancies, and correlate the obtained values with fetal anthropometric parameters. METHODS: A cross-sectional study was performed with 312 women between the 24th and 39th weeks of a normal pregnancy. The cross-sectional areas ...
Maymon Ron - - 2007
Ultrasonography (US) is an accurate method with reproducible results for calculating splenic dimensions. Standards of normal spleen sizes have been developed for the general adult population, for children, and even for tall healthy athletes, thereby enabling US diagnosis of splenomegaly. Extrapolation of data from the normal population to pregnant women ...
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