Search Results
Results 351 - 400 of 1002
< 3 4 5 6 7 8 9 10 11 12 13 >
Jani J - - 2008
OBJECTIVES: To investigate the potential value of antenatally determined total fetal lung volume (TFLV) by magnetic resonance imaging (MRI) in the prediction of the postnatal survival in congenital diaphragmatic hernia (CDH). METHODS: We examined fetuses with isolated CDH, in which MRI was used at 22-38 weeks of gestation to measure ...
Dicuonzo Franca - - 2008
Fetal stroke can occur between the 14th week of pregnancy and the beginning of labor. The incidence is approximately 17-35 of 100,000 live births. Risk factors are correlated to the mother, the pregnancy, or the factors associated with the fetus itself. Computerized tomography and magnetic resonance imaging are the most ...
Baughman W Christopher - - 2008
Placenta accreta (PA) encompasses various types of abnormal placentation in which chorionic villi attach directly to or invade the myometrium. PA is a significant cause of maternal morbidity and mortality and is now the most common reason for emergent postpartum hysterectomy. Its prevalence has risen tenfold in the United States ...
Pistorius Lourens R - - 2008
Much has been written recently about the relative merits and demerits of fetal imaging with ultrasound and magnetic resonance imaging (MRI). Unfortunately, the arguments often generate more heat than light. We attempted to identify the strengths and weaknesses of each modality from the literature, and to arrive at some practical ...
Saleem Sahar N - - 2008
OBJECTIVE: The purpose of this study was to evaluate the feasibility of imaging the fetal heart with a balanced steady-state free precession MRI sequence along the body and cardiac axes after inadequate echocardiography. SUBJECTS AND METHODS: After technically inadequate echocardiography, MRI was performed on 20 fetuses (mean gestational age, 24 ...
Jelin Angie C - - 2008
OBJECTIVE: This study was undertaken to evaluate intracranial magnetic resonance imaging abnormalities in the surviving fetus after a cotwin demise. STUDY DESIGN: This is a retrospective observational study evaluating the intracranial findings of surviving twins after demise of a monochorionic cotwin. A total of 47 cases of cotwin demise were ...
Cannie M - - 2008
OBJECTIVE: To quantify the degree of intrathoracic liver herniation by magnetic resonance imaging (MRI) and evaluate its effect on postnatal survival in fetuses with isolated congenital diaphragmatic hernia (CDH). METHODS: Forty fetuses that were expectantly managed and that were delivered after 32 weeks' gestation were included in this study. On ...
Bardo Dianna - - 2008
Magnetic resonance imaging (MRI) has become an important complementary imaging modality for evaluation of fetal and placental abnormalities over the past decade. MRI can function as a problem solver and help in patient counseling by confirming a suspected diagnosis, offering alternative diagnoses, and identifying additional abnormalities. This article addresses the ...
Hershkovitz R - - 2008
OBJECTIVE: To determine the incidence of prenatal isolated abnormal number of ribs, using three-dimensional (3D) ultrasound. METHODS: This was a prospective study of low-risk women with singleton pregnancy and normal fetal anatomy scan. 3D examinations of the fetal ribs were carried out at the time of the routine anomaly scan ...
Herman-Sucharska Izabela - - 2009
Sonography is the method of choice for prenatal malformation screening but it does not always provide sufficient information for correct diagnosis or adequate abnormality evaluation. Fetal magnetic resonance imaging (MRI) is considered as a valuable second line imaging tool for confirmation, completion and correction of sonographic findings. Fetal MRI has ...
Zhang Yanzhong - - 2008
The development of bioinspired or biomimetic materials is essential and has formed one of the most important paradigms in today's tissue engineering research. This paper reports a novel biomimetic nanocomposite nanofibers of hydroxyapatite/chitosan (HAp/CTS) prepared by combining an in situ co-precipitation synthesis approach with an electrospinning process. A model HAp/CTS ...
Mong Andrew - - 2008
BACKGROUND: Congenital high airway obstruction syndrome (CHAOS) is a rare disorder defined as any fetal abnormality that obstructs the larynx or trachea. Prompt airway intervention at delivery after accurate prenatal diagnosis may allow survival of this otherwise fatal condition. OBJECTIVE: To identify prenatal MRI findings in CHAOS, to compare these ...
Miyakoshi Kei - - 2008
Fetal scalp hemangioma in the occipital region is extremely rare and its accurate diagnosis is essential for perinatal management. We present a case of occipital scalp hemangioma diagnosed by prenatal sonography and magnetic resonance imaging (MRI). An echogenic mass measuring 29 mm x 23 mm x 30 mm was found ...
Picone Olivier - - 2008
OBJECTIVE: To evaluate whether fetal brain magnetic resonance imaging (MRI) adds useful information to the one obtained by ultrasound in fetuses with cytomegalovirus (CMV) infection. METHODS: MRI and ultrasonographic findings were analyzed retrospectively in 38 fetuses with proven congenital CMV infection. Both techniques were performed on the same week at ...
Hung Jeng-Hsiu - - 2008
A 28-year-old woman, gravida 1, para 0, was referred to our fetal diagnosis unit at 28(+2) gestational weeks because no fetal movements were detected. On 2-D ultrasonography, the cephalic axial view showed multiple hypoechoic spaces in the fetal brain, both cerebral cortex and occipital lobe showed bilateral defects, and the ...
Hatab Mustapha R - - 2008
OBJECTIVE: We sought to compare the fetal biometric values head and abdominal circumferences, biparietal and occipital-frontal diameters, and left and right ventricular atrial diameters obtained with contemporaneous sonography and 3D MRI reconstructions in term pregnancies. SUBJECTS AND METHODS: A total of 107 nulliparous women evaluated as having uncomplicated pregnancies and ...
Vázquez E - - 2008
Alexander disease (AD) is a rare neurodegenerative disorder characterized by megalencephaly, leukoencephalopathy, and Rosenthal fibers within astrocytes. This report describes the case of a female patient with sonography-detected ventriculomegaly at 32 weeks' gestation and distinctive MR imaging features at 33 and 36 weeks' gestation, at birth, and at 2 months ...
Manganaro L - - 2009
PURPOSE: To review our experience with fetal magnetic resonance imaging (MRI) to evaluate congenital heart disease (CHD). METHODS: We performed fetal MRI in 32 fetuses with an echocardiographically assessed CHD. Both direct and indirect signs of CHD were investigated. Direct signs considered were: morpho-volumetric abnormalities of the heart; malrotations; ventricular ...
Robinson Ashley J - - 2008
BACKGROUND: Currently ocular biometric measurements are defined by US and are measured from the orbital walls. These bony landmarks cannot be seen by MRI, and therefore these measurements cannot be directly applied. OBJECTIVE: To define measurements of normal growth of the fetal eyes using MRI. MATERIALS AND METHODS: Transorbital views ...
Taylor George A - - 2009
Congenital diaphragmatic hernias are complex and life-threatening lesions that are not just anatomic defects of the diaphragm, but represent a complex set of physiologic derangements of the lung, the pulmonary vasculature, and related structures. Imaging plays an increasingly important role in the care of these infants. Prenatal sonography and MRI ...
Büsing Karen A - - 2008
PURPOSE: To retrospectively evaluate the accuracy of the absolute fetal lung volume (FLV) measured at magnetic resonance (MR) imaging and seven formulas for calculating relative FLV to predict neonatal survival and the need for extracorporeal membrane oxygenation (ECMO) in fetuses with congenital diaphragmatic hernia (CDH). MATERIALS AND METHODS: This retrospective ...
Rizzo Giuseppe - - 2008
OBJECTIVE: The purpose of this study was to test the possibility of diagnosing ventricular septal defects (VSDs) by using tomographic ultrasound imaging (TUI) on 4-dimensional volumes of the fetal chest obtained with spatiotemporal image correlation and the color Doppler function. METHODS: We retrospectively evaluated the 4-dimensional spatiotemporal image correlation volumes ...
Büsing Karen A - - 2008
PURPOSE: To prospectively assess the results of logistic regression analysis that were based on magnetic resonance (MR) image fetal lung volume (FLV) measurements to predict survival and the corresponding need for extracorporeal membrane oxygenation (ECMO) therapy in fetuses with congenital diaphragmatic hernia (CDH) before and after 30 weeks gestation. MATERIALS ...
Zheng Yu - - 2008
OBJECTIVE: The purpose of this study was to assess the usefulness of 3- and 4-dimensional ultrasonography (3D/4DUS) for the description of anomalies associated with trisomy 18 and to determine whether 3D/4DUS adds diagnostic information over what is provided by conventional 2-dimensional ultrasonography (2DUS) alone. METHODS: Twenty-six fetuses subsequently proven to ...
Dighe Manjiri - - 2008
Skeletal dysplasias are a heterogeneous group of conditions associated with various abnormalities of the skeleton. These conditions are caused by widespread disturbance of bone growth, beginning during the early stages of fetal development and evolving throughout life. Despite recent advances in imaging, fetal skeletal dysplasias are difficult to diagnose in ...
Oto Aytekin - - 2008
Management of cystic adnexal lesions diagnosed during pregnancy is a challenging issue for obstetricians. The range of treatment options changes from immediate surgery to close follow-up. This pictorial essay illustrates the magnetic resonance imaging findings of various cystic adnexal lesions in pregnant patients. Magnetic resonance imaging may help in better ...
Guibaud L - - 2008
OBJECTIVE: To illustrate and determine the significance of abnormal Sylvian fissure development (or abnormal operculization) in cases in which prenatal cerebral imaging is suggestive of underlying cortical dysplasia. METHODS: This was a retrospective study of 15 fetuses at 24-34 weeks in which abnormal operculization was identified on prenatal cerebral imaging ...
Achiron R - - 2008
OBJECTIVE: To study three- (3D) and four-dimensional (4D) ultrasound applications for the evaluation of fetal thoracic anomalies. METHODS: Volume datasets of 23 fetuses with thoracic anomalies were acquired with static 3D and cine 4D ultrasound, i.e. spatiotemporal image correlation (STIC) mode. The volumes were analyzed and displayed by multiplanar and ...
Balogun Babajide O - - 2008
Fetus-in-fetu (FIF) is a pathological condition in which the malformed foetus is found in the body of its twin. We report this rare case of a 3-month-old female baby whose diagnostic work-up suggested a mesenteric cyst but the mass at surgery was a FIF. Although current imaging modalities like computerized ...
Parazzini C - - 2008
INTRODUCTION: Prenatal magnetic resonance (MR) imaging is currently used to measure quantitative data concerning brain structural development. At present, morphometric MR imaging studies have been focused mostly on the third trimester of gestational age. However, in many countries, because of legal restriction on abortion timing, the majority of MR imaging ...
Deans Abby E AE Skirball Institute of Biomolecular Medicine, Department of Radiology, New York University, New York, New York 10016, - - 2008
The mouse is the preferred model organism for genetic studies of mammalian brain development. MRI has potential for in utero studies of mouse brain development, but has been limited previously by challenges of maximizing image resolution and contrast while minimizing artifacts due to physiological motion. Manganese (Mn)-enhanced MRI (MEMRI) studies ...
Rutherford Mary - - 2008
Fetal magnetic resonance imaging provides an ideal tool for investigating growth and development of the brain in vivo. Current imaging methods have been hampered by fetal motion but recent advances in image acquisition can produce high signal to noise, high resolution 3-dimensional datasets suitable for objective quantification by state of ...
Levine Deborah - - 2008
PURPOSE: To prospectively assess the frequency and cause of disagreements in diagnoses at ultrasonography (US) and magnetic resonance (MR) imaging for fetuses referred for ventriculomegaly (VM). MATERIALS AND METHODS: One hundred ninety-five women, aged 18-44 years, with 200 fetal referrals for VM, were recruited in a prospective IRB-approved, HIPAA-compliant study. ...
Quek Yeak-Wun - - 2008
Hydranencephaly is a rare and fatal central nervous system disorder where all or nearly all of the bilateral cerebral hemispheres are absent. The extensive hollow cerebrum is replaced with cerebrospinal fluid. Clinically, the differential diagnoses of hydranencephaly include severe hydrocephalus and alobar holoprosencephaly. Nearly all cases are sporadic, involving approximately ...
Noreldeen S A - - 2008
Fetal intestinal volvulus is a rare life-threatening condition usually manifesting after birth. It appears on prenatal ultrasound imaging as a twisting of the bowel loops around the mesenteric artery, leading to mechanical obstruction and ischemic necrosis of the bowel. Vascular compromise can result in bowel infarction and eventual perforation of ...
Deutch Todd D - - 2008
OBJECTIVE: The purpose of this article is to review the published literature and determine the roles that magnetic resonance imaging (MRI) and endovaginal 3-dimensional ultrasonography (3DUS) play in the diagnosis of müllerian duct anomalies (MDAs). METHODS: A PubMed search was performed to identify all of the articles pertaining to the ...
Zhang Gen-Hua - - 2008
The aim of this study was to investigate the age-related developmental changes of taste bud distribution within the subpopulations at different postnatal ages in the mouse oral cavity. Developmental changes of taste bud distribution on the soft palate, fungiform, foliate and circumvallate papillae in the mouse oral cavity were examined ...
Araujo Júnior Edward - - 2008
Ebstein's anomaly is a rare cardiac defect where the septal and posterior leaflets are displaced, towards the right ventricle. The leaflets are dysplastic and stuck to the ventricular wall. Its antenatal diagnosis is usually made through bidimensional echocardiography, which also has prognostic value. Recently, the technological breakthrough of three-dimensional ultrasound ...
Cannie M - - 2008
Ultrasound, which is now a widely available and generally accepted, low-cost technique with real-time properties, is the screening investigation of choice in fetal medicine. However, enthusiasm for fetal prenatal magnetic resonance imaging (MRI) is rising, because of the absence of known biological risks, the increasing ease of performing of fetal ...
Leithner Katharina - - 2008
OBJECTIVE: To investigate women's psychological reactions when undergoing fetal magnetic resonance imaging (MRI), and to estimate whether certain groups, based on clinical and sociodemographic variables, differ in their subjective experiences with fetal MRI and in their anxiety levels related to the scanning procedure. METHODS: This study is a prospective cohort ...
Breeze A C G - - 2008
OBJECTIVES: Following perinatal death, organ weights at autopsy may provide evidence of growth restriction and pulmonary hypoplasia. Whilst postmortem magnetic resonance imaging (MRI) may provide comparable information to autopsy about structural abnormalities, its ability to provide reproducible data about organ size has yet to be determined. We examined the feasibility ...
Manganaro Lucia - - 2008
OBJECTIVE: To report our experience with magnetic resonance imaging (MRI) in fetal heart evaluation. METHOD: Two radiologists examined 31 MRI of fetuses with no ultrasound (US) evidence of cardio-thoracic anomalies. T2-weighted half-Fourier single-shot turbo spin-echo sequences were acquired for anatomic evaluation; fast imaging with steady-state free precession (TrueFISP) and cine-MR ...
Arnold R - - 2008
Exposure to cocaine in utero results in behavioral and neurodevelopmental abnormalities that persist into adulthood. Conventional MR imaging has generally failed to reveal the expected structural lesions to explain these clinical findings. We report a case of focal MR imaging signal-intensity changes in the substantia nigra, locus ceruleus, and other ...
de Bruyn Rose - - 2008
Following the introduction of routine prenatal scanning, and more recently detailed anomaly scans, antenatal ultrasound (US) diagnosis of fetal renal tract abnormalities has become well established. Prenatal detection has resulted in a group of asymptomatic infants becoming patients in the last two decades. These infants are referred for paediatric (general, ...
Cohen Marta C - - 2008
The decline in the postmortem (PM) autopsy rate in the United Kingdom paralleled the change in public perception of this procedure after the organ retention crisis in 2000. The introduction of magnetic resonance imaging (MRI) in the fetal, perinatal, and pediatric autopsy led some investigators to propose that MRI could ...
Tsutsumi Seiji - - 2008
We report the first case of thanatophoric dysplasia (TD) successfully diagnosed in utero by a combination of 2-D ultrasound, computed tomography (CT) 3-D imaging and genetic analysis at 26 weeks' gestation. Prenatal sonographic examinations performed at 23 weeks' gestation revealed micromelic shortening of the limbs, reduced thoracic cavity and a ...
Solopova Alina - - 2008
We describe the prenatal magnetic resonance imaging (MRI) findings in a 25-week-old fetus with proven osteogenesis imperfecta type II. Fetal MRI findings are correlated with prenatal ultrasonography, conventional x-ray fetography and postpartal findings. Fetal MRI proves to be superior to conventional fetography in the evaluation of the skeletal findings. The ...
Nelson Thomas R - - 2008
OBJECTIVE: The purpose of this study was to assess the performance of stereoscopic compared with conventional viewing of 3-dimensional ultrasound (3DUS) data for evaluation of fetal bony structures. METHODS: A series of 47 human fetuses were evaluated with conventional 3DUS scanning systems. Twenty-five volumes of the fetal head, thorax, and ...
Obenauer Silvia - - 2008
Fetal magnetic resonance imaging has become a useful noninvasive modality to examine the human fetus in case of suspicious sonography. Normally, central nervous system structures of the fetus in utero indicate the need for further evaluation. Fast T(2)-weighted sequences are used, which minimize artifacts and allow high contrast between different ...
Yasuda Seiei - - 2008
Diffuse high FDG uptake in the stomach is occasionally observed on positron emission tomography (PET) images. Some PET oncologists believe this to be physiologic uptake, but the exact cause is undetermined. We retrospectively compared PET images and endoscopic findings to examine the relation between diffuse gastric FDG uptake and gastritis. ...
< 3 4 5 6 7 8 9 10 11 12 13 >