Search Results
Results 251 - 300 of 996
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Bulas Dorothy - - 2010
Spinal dysraphism or neural tube defects (NTD) encompass a heterogeneous group of congenital spinal anomalies that result from the defective closure of the neural tube early in gestation with anomalous development of the caudal cell mass. Advances in ultrasound and MRI have dramatically improved the diagnosis and therapy of spinal ...
Wang Guangbin - - 2011
To describe the magnetic resonance (MR) imaging findings of fetal CL/CP and evaluate its diagnostic value. Twelve fetuses with CL/CP diagnosed by transabdominal US underwent MR imaging within 2 days of US. Half-Fourier acquisition single-shot turbo spin echo (HASTE) sequence on T2-weighted images was performed on sagittal, coronal, and axial ...
Story Lisa L Imperial College London, Hammersmith Campus, London, - - 2011
Magnetic Resonance Imaging (MRI) has become an established technique in fetal medicine, providing complementary information to ultrasound in studies of the brain. MRI can provide detailed structural information irrespective of the position of the fetal head or maternal habitus. Proton Magnetic Resonance Spectroscopy ((1)HMRS) is based on the same physical ...
Epelman Monica - - 2010
Congenital lung lesions refer to a spectrum of pulmonary developmental anomalies including, but not limited to, bronchial atresia, congenital pulmonary airway malformation (formerly known as congenital cystic adenomatoid malformation) and bronchopulmonary sequestration. These anomalies comprise about 90% of the anomalies seen in clinical practice. The advent of prenatal sonography and, ...
Lipinski Robert J RJ Molecular and Environmental Toxicology Center, School of Medicine and Public Health, University of Wisconsin, Madison, WI, USA. - - 2010
The Hedgehog (Hh) pathway provides inductive signals critical for developmental patterning of the brain and face. In humans and in animal models interference with this pathway yields birth defects, among the most well-studied of which fall within the holoprosencephaly (HPE) spectrum. Timed-pregnant C57Bl/6J mice were treated with the natural Hh ...
Tonni Gabriele - - 2011
Cephalothoracopagus is the less common type of conjoined twins (CTs) with an incidence estimated at one in three million births or one in 58 conjoined twins. Maternal gene Vg1, a member of the TGF-beta family of cell-signalling molecules which are implicated in dorsoanterior development, and specific actions of Hox and ...
Brugger Peter C - - 2010
To study the prenatal development of the efferent lacrimal pathways with magnetic resonance imaging (MRI), with special reference to the pathogenesis of congenital dacryocystoceles (CDCCs). A total of 751 MRI studies of singleton fetuses [19-40 gestational weeks (GW)] were retrospectively evaluated. Visibility of the efferent lacrimal pathways was assessed on ...
Fernández-Mayoralas Daniel Martín - - 2010
Schizencephaly is a rare disorder of neuronal migration that is characterized by the presence of clefts that extend from the ependymal surface of the lateral ventricles to the pial lining of the cortex. The authors present the case of a female patient with a prenatal diagnosis made by magnetic resonance ...
Cignini Pietro - - 2010
To evaluate the role of a dedicated neurosonographer in prenatal diagnosis of isolated complete agenesis of the corpus callosum (iCACC) and to asses the postnatal outcome of these infants. Prospective study between January 2004 to December 2004 at Fetal Maternal Medical Centre 'Artemisia', Rome, Italy. A detailed ultrasound scan was ...
Ting Erica T - - 2010
Fewer than 200 cases of prenatally diagnosed magnetic resonance imaging-confirmed fetal intracranial hemorrhage have been reported. Children surviving grade IV fetal intracranial hemorrhage usually manifest severe impairments, including mental retardation. We report on a child with a grade IV intracranial hemorrhage diagnosed by in utero ultrasound at 28 weeks of ...
Kumar Hari R - - 2010
Fetal imaging has dramatically impacted neonatal care by providing an advanced warning of many different congenital anomalies. The advancements and widespread use of fetal imaging has, however, increased the identification of various incidental findings that is creating new challenges for neonatal diagnosis and treatment. We report such a case where ...
Winter Thomas C - - 2010
OBJECTIVE: The cavum septi pellucidi (CSP) is routinely imaged in the fetal brain during obstetric sonography; in fact, for well over a decade, assessment of the CSP has been considered part of the required elements of a standard examination of fetal morphology in guidelines developed by multiple specialty societies. Our ...
Daltro Pedro - - 2010
Congenital chest malformations can range from small and asymptomatic entities to large space-occupying masses that require immediate surgical treatment. They may affect the foregut, pulmonary airway, and vasculature. Hybrid conditions are commonly seen, with interrelated chest malformations having various radiologic and pathologic features. An understanding of the in utero complications ...
Descamps Marjanne J L MJ Nuffield Department of Surgery, John Radcliffe Hospital and Spires Cleft Centre, Oxford Children’s Hospital, Oxford, UK. - - 2010
To assess the use of fetal magnetic resonance imaging (MRI) in obtaining a definitive prenatal diagnosis of cleft palate. All expectant mothers with a sonographically diagnosed fetal cleft lip or a previously affected child with cleft palate were offered antenatal MRI at around 34 weeks' gestation. Images were interpreted by ...
Deshmukh Swati - - 2010
Fetal lung volume can be assessed from MR images by planimetric measurement and comparison with normal values. We review 10 MRI articles that report normal fetal lung volumes based on gestational age to assess reproducibility and application of data. The articles were analyzed for differences in methodology and disparities in ...
Warren D J - - 2010
BACKGROUND AND PURPOSE: There is gathering evidence to suggest that agenesis of the corpus callosum is associated with delayed fetal sulcation; it is possible that the corpus callosum facilitates normal gyral development. In this paper we sought to confirm whether delayed sulcation is found in fetuses with isolated agenesis of ...
Berman J I - - 2011
SUMMARY: Fetal diffusion MR imaging was performed in 3 fetuses with CHD. ADC values in the periatrial WM, thalamus, and basal ganglia were compared with those in a control population of fetuses. Diffusivity in the periatrial WM and thalamus was higher for the fetuses with CHD compared with controls. These ...
Amer Hoda Zeinab M - - 2010
Chorangioma has been referred to as a hamartoma-like, or a hyperplastic capillary lesion, rather than a true neoplasm. Its incidence is 1 in 100 placentas. In chorangiomas larger than 4 cm, there can be significant effects on the hemodynamic and circulatory processes of the fetus, leading to grave clinical consequences, ...
Linam L E - - 2010
Enlargement of a kidney on prenatal imaging is usually due to hydronephrosis or cystic renal disease, and much less often results from solid tumors such as mesoblastic nephroma, Wilms' tumor, nephroblastomatosis, renal sarcoma, and angiomyolipoma. All can be diagnosed by ultrasound. Magnetic resonance imaging is useful not only in confirming ...
Goto Hirofumi - - 2010
We describe a case of congenital segmental giant megaureter in a boy that presented as a fetal abdominal mass. He also had bilateral undescended testes, bilateral vesicoureteral reflux, and segmental aniridia. He presented with hypoglycemia in the neonatal period that resolved. Postnatal magnetic resonance imaging, voiding cystourethrography and radionuclide imaging ...
Kuwashima Shigeko - - 2010
A woman was referred to our institution with an ultrasound (US) suggestive of right-sided heart in fetus at 34 weeks' gestation. Magnetic resonance (MR) imaging revealed right-sided heart, small right hemithorax, and completely absent right main bronchus and right pulmonary artery. From our experience with this case, we point out ...
BekiesiƄska-Figatowska Monika - - 2010
INTRODUCTION: Ultrasonography is the first step in the in vivo evaluation of fetal central nervous system. However, it is not always easy--or even possible--to carry out this examination because of maternal obesity, oligo- or ahydramnios or fetal position. Magnetic resonance imaging becomes then the only method of assessment. Recognition of ...
Fang J - - 2010
This report presents a case of nasopharyngeal diffuse large B-cell lymphoma and a literature review concerning the use of [(18)F]fluorodeoxyglucose (FDG) positron emission tomography/computed tomography (PET/CT). A 37-year old man was admitted to hospital complaining of nasal secretions with minor epistaxis and a 20-year history of snoring. Nasal endoscopy found ...
Celedin Stefan - - 2010
Fetal magnetic resonance imaging is increasingly being used as an adjunct to ultrasound. It allows for better visualization of in utero brain development and intracranial abnormalities (especially cerebral malformations). Hypothalamic hamartoma is a nonneoplastic malformation resembling normal hypothalamic tissue both histologically and on magnetic resonance imaging. Although it is rare, ...
Weston M J - - 2010
Improvements in magnetic resonance (MR) imaging now permit diagnostic images of the fetus to be obtained. Ultrasound remains vital in all aspects of fetal imaging but MR provides a useful second line imaging test. Its value is best researched in fetal central nervous system disorders but it can be applied ...
Vaneckova Manuela - - 2010
Post mortem magnetic resonance imaging is demonstrated as a supplementary method to classic pathological-anatomical autopsy in determining anomalies of the foetus. Frequently it plays a key role; primarily where the possibilities of performing autopsy are somehow limited (autolysis, ventricular dilatation). Specification of the final diagnosis subsequently enables us to improve ...
Barseghyan Karine - - 2010
A 34-year-old Hispanic woman was referred to us at 18 weeks' gestation for prenatal ultrasound. Sonographic evaluation showed a large omphalocele similar in size to the abdomen. Ultrasonographic and MRI images illustrating the typical appearance of a giant omphalocele are provided.
Toshima Takeo - - 2010
Thyroid metastases from hepatocellular carcinoma (HCC) seldom occur and are often difficult to diagnose because of their asymptomatic clinical course. We evaluated a very rare case of solitary thyroid metastasis from HCC that showed high uptake of fluorine-18 fluorodeoxyglucose (FDG), when imaged using fluorine-18 fluorodeoxyglucose positron emission tomography/computed tomography (FDG-PET/CT). ...
Castaldi P - - 2010
Incidentally discovered adrenal masses are a common diagnostic problem. While computed tomography (CT) and magnetic resonance (MR) imaging can adequately characterize most benign or malignant adrenal masses, in some cases the results are indeterminate. We report and discuss a case of an adrenal metastasis with misleading clinical and CT features, ...
Limperopoulos Catherine C Department of Neurology and Neurosurgery, McGill University, Montreal, Quebec, Canada. - - 2010
Adverse neurodevelopmental outcome is an important source of morbidity in children with congenital heart disease (CHD). A significant proportion of newborns with complex CHD have abnormalities of brain size, structure, or function, which suggests that antenatal factors may contribute to childhood neurodevelopmental morbidity. Brain volume and metabolism were compared prospectively ...
Yazici Zeynep - - 2010
We present a case of Kniest dysplasia, a rare form of the type II collagenopathies, with prenatal MRI. Sonography revealed only short limbs in the fetus. Fetal MRI findings included enlarged hyaline cartilaginous structures with abnormally high T2 signal intensity, delayed ossification of the pubic and ischial bones, and platyspondyly. ...
Manfredi R - - 2010
PURPOSE: We evaluated the role of magnetic resonance (MR) imaging in the diagnosis of corpus callosum agenesis - isolated or associated with other anomalies - in fetuses with mild cerebral ventriculomegaly, as depicted at prenatal sonography. MATERIAL AND METHODS: Between January 2005 and March 2007, 33 fetuses with a mean ...
Huibers Marieke - - 2009
We describe a case concerning alobar holoprosencephaly and proboscis diagnosed at 20+3 weeks gestation during routine sonographic scanning. The internal neural and craniofacial malformations of the fetus were confirmed using magnetic resonance imaging (MRI). Amniocentesis demonstrated trisomy 13 of a male fetus.
Hines Neely - - 2009
The purpose of this study was to evaluate the importance of echogenic material in the fetal frontal horns. This was a Health Insurance Portability and Accountability Act-compliant, Institutional Review Board-approved retrospective study. In part 1 of the study, prenatal sonography, prenatal magnetic resonance imaging (MRI), and birth outcomes of 17 ...
Ota Miho M 1Department of Radiology, Musashi Hospital, National Center of Neurology and Psychiatry, 4-1-1 Ogawahigashi, Kodaira, Tokyo 187-8551, - - 2009
Recent cross-sectional studies suggest that brain changes in schizophrenia are progressive during the course of the disorder. However, it remains unknown whether this is a global process or whether some brain areas are affected to a greater degree. The aim of this study was to examine the longitudinal brain changes ...
Saleem S N - - 2010
BACKGROUND AND PURPOSE: JSRD are rare autosomal recessive brain malformations. We hypothesized that MR imaging can assess fetuses at risk for JSRD and might influence their diagnoses. MATERIALS AND METHODS: We prospectively performed cranial MR imaging for 12 fetuses (mean GA, 23 weeks; SD, 3.7) at 25% recurrence risk for ...
Cozzi Denis A - - 2010
Abdominal lymphangioma represents an uncommon congenital anomaly. Herein, we describe an unusual case, which on routine antenatal ultrasonography masqueraded as isolated ascites. Subsequent fetal MRI at 27 weeks' gestation implemented antenatal assessment of the lesion, prompting further investigations and straightforward postnatal treatment. Fetal MRI represents a valuable adjunct to antenatal ...
Glenn Orit A - - 2010
Fetal MRI is clinically performed to evaluate the brain in cases where an abnormality is detected by prenatal sonography. These most commonly include ventriculomegaly, abnormalities of the corpus callosum, and abnormalities of the posterior fossa. Fetal MRI is also increasingly performed to evaluate fetuses who have normal brain findings on ...
Tomlinson Tracy M - - 2010
We assessed the use of magnetic resonance imaging (MRI) to define placental hypoxic injury associated with fetal growth restriction. On embryonic day 18.5 (E18.5) we utilized dynamic contrast-enhanced (DCE)-MRI on a 4.7-tesla small animal scanner to examine the uptake and distribution of gadolinium-based contrast agent. Quantitative DCE parameter analysis was ...
Wentland A L AL Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin, USA. - - 2010
Fetal origin of the PCA is a common anatomic variation of the circle of Willis. On perfusion imaging, patients with unilateral fetal-type PCA may demonstrate left-right asymmetry that could mimic cerebrovascular disease. The aim of this study was to characterize the relationship between a fetal-type PCA and asymmetry of hemodynamic ...
Salomon L J - - 2009
Esophageal atresia is the principal cause of congenital esophageal obstruction. Prenatal suspicion of esophageal atresia is usually based on the presence of polyhydramnios together with an absent stomach bubble. More recently, visualization of the dilatation of the blind-ending esophagus (esophageal pouch) during fetal swallowing has been reported and proposed as ...
Gedikbasi Ali - - 2009
We report a case of schizencephaly diagnosed prenatally at 23 weeks of gestational age with two-dimensional (2D) and three-dimensional (3D) sonography and fetal brain MRI, confirmed by autopsy. The diagnostic method of choice is 2D transabdominal and transvaginal sonography, whereas additional 3D sonography and MRI may provide a better understanding ...
Griffiths P D - - 2010
BACKGROUND AND PURPOSE: Fetal ventriculomegaly (VM) is important because of its high prevalence and high risk of association with other brain abnormalities. The purpose of this article was to investigate the hypotheses that including in utero MR imaging (iuMR) in the diagnostic pathway for fetuses with isolated VM on antenatal ...
Hocwald Ori - - 2009
Congenital brain tumors are rare. Clinically, they often result in macrocrania, hydrocephalus, and focal neurologic deficits. Fetal onset may result in dystocia and stillbirth. Antenatal detection is becoming more common as the result of neuroimaging, and modalities such as magnetic resonance imaging can assist in narrowing the pathologic differential diagnoses. ...
Chen Chih-Ping - - 2009
OBJECTIVE: To present the prenatal magnetic resonance imaging (MRI) findings of concomitant craniorachischisis and omphalocele, review the literature, and discuss the pathogenesis. CASE REPORT: A 20-year-old, gravida 2, para 0, woman was referred to genetic counseling at 17 weeks of gestation because of multiple congenital malformations in the fetus. Level ...
Zeidan Smart S Department of Pediatric Surgery, Timone-enfants Hospital, Marseille, France. - - 2009
This study evaluated the accuracy of prenatal MRI and postnatal CT imaging in the identification of congenital cystic adenomatoid malformation and bronchopulmonary sequestration by comparison with histological analysis. Over a 3-year period, 15 patients with lung malformations diagnosed prenatally by ultrasound were referred for prenatal MRI, and all were investigated ...
Tang Phua Hwee PH Department of Diagnostic Imaging, KK Women's and Children's Hospital, Singapore. - - 2009
Fetal imaging has improved with the development of faster magnetic resonance imaging (MRI) sequences, obviating the requirement for sedation. It is useful in characterising abnormality of the central nervous system in fetuses with abnormal or equivocal antenatal ultrasound findings. We reviewed all cases of fetal brain and spine MRI performed ...
Camuzcuoglu Hakan - - 2010
Dicephalic parapagus is a rare anomaly of monochorionic twinning. We present prenatal diagnosis of this anomaly with ultrasonography and magnetic resonance imaging. She was at the 19th week of gestation. Even if earlier diagnosis is possible, this was her first examination unfortunately. Baby had two head and a common trunk. ...
Gupta Prerna - - 2010
OBJECTIVE: Our aim was to determine the role of fetal MRI in sonographically detected abdominal cystic masses. MATERIALS AND METHODS: Fifty-six fetuses in 56 women with fetal malformation underwent sonography and MRI. Out of the 56 fetuses, 6 had intra-abdominal cystic masses and formed our study group. MRI findings were ...
Girard Nadine - - 2009
During the last decade, increasing interest in magnetic resonance imaging has emerged for the evaluation of fetal abnormalities detected on ultrasound. The advent of single-shot rapid acquisition sequences has greatly facilitated our ability to obtain detailed imaging information of the fetal brain. To date, fetal magnetic resonance imaging has shown ...
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