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Results 351 - 400 of 982
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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. ...
Sugai Yukio - - 2008
We report a case of a fetal omphalocele in which the internal structure of the hernia sac was imaged in detail by magnetic resonance (MR) imaging. The hernia sac consisted of amnion, Wharton jelly, and externally, peritoneum. The umbilical vascular channels (2 arteries, one vein) were surrounded by Wharton jelly. ...
Perkins L L Imaging Sciences Department, MRC Clinical Sciences Centre, Imperial College, Hammersmith Campus, London, - - 2008
The subplate is a transient structure essential for normal development of the cortex. We used magnetic resonance imaging of the fetal brain to assess cortical subplate evolution between 20 and 35 weeks gestation. Two-dimensional measures of diameter were obtained for the cortex, subplate and fetal white matter. The subplate was ...
Bonel H - - 2008
The purpose of this study was to evaluate the neuroimaging quality and accuracy of prospective real-time navigator-echo acquisition correction versus untriggered intrauterine magnetic resonance imaging (MRI) techniques. Twenty women in whom fetal motion artifacts compromised the neuroimaging quality of fetal MRI taken during the 28.7 +/- 4 week of pregnancy ...
Ono Kyoko - - 2007
Prenatal diagnosis of lymphangiomas located in the posterior mediastinum has been reported to be extremely rare. We present a fetus with a prenatally diagnosed posterior mediastinal lymphangioma found at 28 weeks' gestation. Fetal ultrasound and magnetic resonance imaging (MRI) revealed a 46 x 26 x 30 mm multicystic mass extending ...
Montie Eric W - - 2007
This article provides the first anatomically labeled, magnetic resonance imaging (MRI) -based atlas of the subadult and fetal Atlantic white-sided dolphin (Lagenorhynchus acutus) brain. It differs from previous MRI-based atlases of cetaceans in that it was created from images of fresh, postmortem brains in situ rather than extracted, formalin-fixed brains. ...
Inaoka Tsutomu - - 2007
The great potential of MRI for assessing gastrointestinal abnormalities in fetuses has been described. T1-weighted images may add additional information to T2-weighted images in diagnosing fetal gastrointestinal abnormalities. The objective of this study was to assess the performance of a 3D volumetric interpolated breath-hold sequence (VIBE) in evaluating the normal ...
Benacerraf Beryl R - - 2007
OBJECTIVE: The purpose of this study was to determine the contribution of magnetic resonance imaging (MRI) in evaluating fetuses with the sonographic diagnosis of ventriculomegaly (VM). METHODS: Over 4 years, consecutive fetuses with the sonographic diagnosis of VM at 1 facility who underwent prenatal MRI at a second facility were ...
Moser T - - 2008
BACKGROUND AND PURPOSE: Hypoattenuated foci in the otic capsule are routinely identified on multidetector CT (MDCT), particularly in pediatric patients. We aimed to describe and characterize the hypoattenuated focus in the anterior otic capsule. MATERIALS AND METHODS: We first reviewed histologic sections of the temporal bone from 8-month-old fetuses to ...
Tseng Jenn-Jhy - - 2007
A precise prenatal diagnosis of hemangioma may be uncertain although a variety of the antenatal appearances on 2-dimensional sonography have been reported. A 27-year-old primigravida was referred at 32 weeks of gestation for evaluation of a fetal nuchal mass. Two-dimensional sonography showed an extracranial mixed echogenic mass (65 x 54 ...
Nijs Els L F - - 2007
The purpose of this article is to provide an overview of the most common anatomic, congenital, and developmental anomalies of the pancreas. Familiarity with the imaging appearances of these anomalies as well as the range of normal appearance is important to differentiate them from other conditions, especially since some of ...
Ando Kumiko - - 2007
INTRODUCTION: Chiari type II malformation (CMII) is one of three hindbrain malformations that display hydrocephalus. We have observed that cerebrospinal fluid (CSF) signal in the posterior fossa, which is always apparent on normal fetal MR images, is not visible in a fetus with CMII. We use the term 'tight posterior ...
McDevitt Helen - - 2007
Congenital anomalies causing airway obstruction in the newborn are potentially fatal. However if an effective airway can be maintained the long-term prognosis is often excellent. We present four cases of airway obstruction, three of which were diagnosed antenatally. We discuss the role of antenatal imaging and review delivery options including ...
Miyazaki Osamu - - 2007
We report a case of chondrodysplasia punctata tibia-metacarpal type (CDP-TM) that was diagnosed prenatally using multidetector CT (MDCT) with three-dimensional (3-D) CT reconstructions. Prenatal US had shown severe thoracic hypoplasia and rhizomelic shortening of the limbs, raising the suspicion of thanatophoric dysplasia. However, MDCT showed punctate calcifications in the epiphyseal ...
Robinson Ashley J - - 2007
Fetal magnetic resonance provides a new tool in the imaging of the posterior fossa and is proving useful in cases that are difficult to assess sonographically by allowing further assessment of the fourth ventricle, cisterna magna, and vermian growth and development. We describe various criteria with which to evaluate vermian ...
Oh Karen Y - - 2007
OBJECTIVES: Recognize posterior fossa anomalies on ultrasound and magnetic resonance imaging and appreciate imaging pitfalls that may lead to misdiagnosis. MATERIALS AND METHODS: Cases are presented to illustrate normal development and various anomalies. Postnatal studies and autopsy are used for correlation with prenatal imaging. RESULTS: Normal anatomy and anomalies are ...
Dykes Thomas M - - 2007
The educational objectives of this continuing medical education activity are for the reader to exercise, self-assess, and improve skills in diagnostic radiology with regard to the interpretation of hysterosalpingograms and magnetic resonance imaging (MRI) of the female pelvis in the evaluation of recurrent reproductive failure caused by congenital uterine anomalies. ...
Sohn Yong-Seok - - 2007
PURPOSE: Fast MRI has provided detailed and reproducible fetal anatomy. This study was performed to evaluate the usefulness of fetal MRI for prenatal diagnosis. MATERIALS AND METHODS: Fifty-six fetuses with congenital abnormalities on ultrasonography were evaluated by fetal MRI from 2001 to 2004 in Severance Hospital. Final diagnosis was made ...
Oishi Motoi - - 2007
The pH-sensitive PEGylated nanogels constructed from tethered PEG chains and a polyamine gel core containing 19F compounds showed remarkable on-off regulation of 19F MR (magnetic resonance) signals in response to the extracellular pH (6.5) of the tumor environment, even in the presence of 90% fetal bovine serum, due to the ...
Lissauer David - - 2007
Fetal lower urinary tract obstruction affects 2.2 per 10,000 births. It is a consequence of a range of pathological processes, most commonly posterior urethral valves (64%) or urethral atresia (39%). It is a condition of high mortality and morbidity associated with progressive renal dysfunction and oligohydramnios, and hence fetal pulmonary ...
Papadias A - - 2008
AIM: To assess the diagnostic capability of fetal magnetic resonance imaging (MRI) in children suspected antenatally to harbor central nervous system (CNS) defects that require immediate postnatal neurosurgical treatment. MATERIALS AND METHODS: Between 2003 and 2005, 13 fetal MRI scans were performed in mothers suspected to have fetuses with congenital ...
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