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Sorensen Mathew D MD Department of Urology, University of Washington School of Medicine, Seattle, Washington 98195, USA. - - 2013
To compare color Doppler twinkling artifact and B-mode ultrasonography in detecting kidney stones. Nine patients with recent CT scans prospectively underwent B-mode and twinkling artifact color Doppler ultrasonography on a commercial ultrasound machine. Video segments of the upper pole, interpolar area, and lower pole were created, randomized, and independently reviewed ...
Massein A - - 2013
Deep gastrointestinal involvement in endometriosis is characterised by fibrous, retractile thickening of the intestinal wall. The most common location is the upper rectum, in contiguity with a lesion of the torus uterinus. As part of a preoperative assessment, it is essential to establish an accurate and exhaustive map of intestinal ...
Leclerc Benoît - - 2013
Sporadic Alzheimer's disease (AD) is an emerging chronic illness characterized by a progressive pleiotropic pathophysiological mode of actions triggered during the senescence process and affecting the elderly worldwide. The complex molecular mechanisms of AD not only are supported by cholinergic, beta-amyloid, and tau theories but also have a genetic basis ...
Franks Bradley - - 2013
Conspiracy theories (CTs) can take many forms and vary widely in popularity, the intensity with which they are believed and their effects on individual and collective behavior. An integrated account of CTs thus needs to explain how they come to appeal to potential believers, how they spread from one person ...
Li Ye - - 2013
The use of quadrature RF magnetic fields has been demonstrated to be an efficient method to reduce transmit power and to increase the signal-to-noise (SNR) in magnetic resonance (MR) imaging. The goal of this project was to develop a new method using the common-mode and differential-mode (CMDM) technique for compact, ...
Stagg Charlotte J CJ Nuffield Department of Clinical Neurosciences, Oxford Centre for Functional MRI of the Brain (FMRIB), John Radcliffe Hospital, University of Oxford , Oxford , - - 2013
Transcranial direct-current stimulation (tDCS) is showing increasing promise as an adjunct therapy in stroke rehabilitation. However questions still remain concerning its mechanisms of action, which currently limit its potential. Magnetic resonance (MR) techniques are increasingly being applied to understand the neural effects of tDCS. Here, we review the MR evidence ...
Mahon Bradford Z BZ is at the Department of Brain and Cognitive Sciences, and the Department of Neurosurgery , University of Rochester , Rochester , United States - - 2013
Functional magnetic resonance imaging has been used to identify the different networks in the brain that underpin the use of tools by humans.
Nienaber Christoph A - - 2012
The classic entity of life-threatening aortic dissection represents one pathology of a spectrum of acute conditions coined the acute aortic syndrome comprising dissection, intramural haematoma, penetrating atherosclerotic ulcer, and contained aortic rupture of any cause. The common denominator is disruption of the aortic media layers associated with severe pain and ...
Tai Chao-Yi - - 2012
we report on significant mode splitting in plasmonic resonators induced by intracavity resonance. In contrast to traditional dielectric resonators where only picometer range of splitting was achieved, splitting over several hundred nanometers can be obtained without using ultrahigh quality resonators. We show that by appropriately choosing the coupling length, minute ...
Rehani M M - - 2012
In 1998, the International Commission on Radiological Protection (ICRP) warned that computed tomography (CT) doses were high, and the frequency of usage was likely to increase in view of spiral CT technology that enhances patient convenience and provides high-quality diagnostic information. Two ICRP publications (Publications 87 and 102) have provided ...
Zhu Jian - - 2012
We demonstrate excitation of ferromagnetic resonance in CoFeB/MgO/CoFeB magnetic tunnel junctions (MTJs) by the combined action of voltage-controlled magnetic anisotropy (VCMA) and spin transfer torque (ST). Our measurements reveal that GHz-frequency VCMA torque and ST in low-resistance MTJs have similar magnitudes, and thus that both torques are equally important for ...
Theodoridou K - - 2012
The objective of this study was to characterize the condensed tannins (CTs) in wrapped silage bales of sainfoin (Onobrychis viciifolia) and examine their potential action on in vivo and in situ digestive characteristics in sheep. Silage was made from sainfoin, cut at two phenological stages. The first phenological stage, at ...
Nashev Lyubomir G - - 2012
Impaired corticosteroid action caused by genetic and environmental influence, including exposure to hazardous xenobiotics, contributes to the development and progression of metabolic diseases, cardiovascular complications and immune disorders. Novel strategies are thus needed for identifying xenobiotics that interfere with corticosteroid homeostasis. 11β-hydroxysteroid dehydrogenase 2 (11β-HSD2) and mineralocorticoid receptors (MR) are ...
Schneider Susanne A SA Schilling Section of Clinical and Molecular Neurogenetics, Department of Neurology, University Luebeck, Germany ; Dementia Research Centre, Institute of Neurology, London, United - - 2012
Hereditary spastic paraplegias (HSPs) are a clinically and genetically heterogeneous group of neurological diseases, which typically present with progressive lower extremity weakness and spasticity causing progressive walking difficulties. Complicating neurological or extraneurological features may be present. We describe a 19-year-old male who was referred because of an action tremor of ...
Aubry Sébastien - - 2011
PURPOSE: The aims of this study were to compare in vitro magnetic resonance imaging (MRI) characteristics of keratinocytic skin cancer assessed by a 7-tesla (T) MRI with histopathology, and to describe MRI features of skin tumors. METHODS: This prospective study included 30 skin tumors treated by surgery. MR images of ...
Spector M E - - 2012
HNSCC that involves the skin is able to invade the dermal lymphatic system. Currently there is no way to identify patients with dermal lymphatic invasion preoperatively. The purpose of this study is to determine whether CT can predict dermal lymphatic invasion. Medical records, CT scans, and corresponding histopathologic slides were ...
Takeoka Yasunobu - - 2011
Intravascular large B-cell lymphoma (IVLBCL) is a rare form of non-Hodgkin's lymphoma characterized by a proliferation of tumor cells within the lumina of small to medium-sized vessels. Because there are few or no concomitant solid lesions, a diagnosis of IVLBCL usually cannot be established by CT or MR imaging. Herein, ...
Kalender Ebuzer - - 2011
Primary cutaneous diffuse large B-cell lymphoma is an uncommon type of non-Hodgkin lymphomas. A 51-year-old man had 2 gradually enlarging reddish, firm, and painless cutaneous-subcutaneous masses surrounded with some erythematous patches on his back for 3 years. Skin biopsy result was consistent with diffuse large B-cell lymphoma. FDG PET/CT was ...
Boivin Jonathan - - 2011
Purpose: The authors applied 2D reference dosimetry protocol for dose measurements using XR-QA radiochromic film model during diagnostic computed tomography (CT) examinations carried out on patients and humanoid Rando phantom.Methods: Response of XR-QA model GAFCHROMIC™ film reference dosimetry system was calibrated in terms of Air-Kerma in air. Four most commonly ...
Sampson John H JH Division of Neurosurgery, Department of Surgery, Duke University Medical Center, Durham, North Carolina 27710, USA. - - 2011
Convection-enhanced delivery (CED) permits site-specific therapeutic drug delivery within interstitial spaces at increased dosages through circumvention of the blood-brain barrier. CED is currently limited by suboptimal methodologies for monitoring the delivery of therapeutic agents that would permit technical optimization and enhanced therapeutic efficacy. To determine whether a readily available small-molecule ...
Canuto H C HC Magnetic Resonance Imaging and Spectroscopy Section, NIH/National Institute on Aging, Intramural Research Program, GRC 4D-08 5600 Nathan Shock Drive, Baltimore, MD 21224, - - 2012
Evaluation of the skin phenotype in osteogenesis imperfecta (OI) typically involves biochemical measurements, such as histologic or biochemical assessment of the collagen produced from biopsy-derived dermal fibroblasts. As an alternative, the current study utilized non-invasive magnetic resonance imaging (MRI) microscopy and optical spectroscopy to define biophysical characteristics of skin in ...
Simpson R C RC Department of Dermatology, University Hospitals Leicester NHS Trust, Leicester Royal Infirmary, Leicester, UK. - - 2011
A 35-year-old male with classical Hodgkin's lymphoma (nodular sclerosing, grade 1 histology, clinical stage 2A) underwent a positron emission tomography (PET) scan to assess response to treatment. Half body CT PET imaging was obtained using a Siemens Biograph scanner from eyes to thighs. 405 MBq of 18-fluorodeoxyglucose (FDG) was injected ...
Shibata Sumiya - - 2011
To describe a simple technique for preoperative surface localization of intracranial lesions. 11 pills in total, including Alfarol (alfacalcidol) capsules, were affixed to a phantom with adhesive tape and a MRI scan was performed. The visibility of the pills and any spatial errors in determining their locations were evaluated. Between ...
Li Yuxin - - 2011
A 50-year-old man presented with initial complaints of diffuse skin pain and pruritus. Physical examination revealed scattered skin plaques and subcutaneous nodules with mild tenderness throughout the body. Skin biopsy demonstrated noncaseating epithelioid granulomas. Patient soon developed cough, fever with hot flashes, and shortness of breath on exertion. FDG PET/CT ...
Prasad Arun - - 2011
Objectives- The aim of this study was to compare airway anatomic parameters as measured by sonography and computed tomography (CT). Methods- Fifteen adult patients underwent CT followed by sonography of the anterior neck under standard conditions. A radiologist and an anesthesiologist with experience in airway imaging examined the scans and ...
Ueguchi Takashi - - 2011
To evaluate the potential of tetrahedral diffusion-weighted imaging (DWI) compared to orthogonal DWI for detection and localization of early enhanced breast mass lesions at 1.5T. Sixty-seven consecutive patients (mean age 51.7 years, range 14-84 years) with 68 solitary early enhanced breast lesions suspicious for cancer on dynamic contrast-enhanced magnetic resonance ...
Gilbert J W - - 2011
A variety of magnetic resonance imaging (MRI)-compatible skin-marker localization devices are available on the market. MRI protocols call for the liberal use of the skin markers over the specific site of symptoms or over any palpable mass. This study investigates the usefulness of patient-assisted placement of 1 000-mg fish oil capsules ...
Schullian Peter - - 2011
Objective: CT-guided biopsy still plays a decisive role in the management of liver tumors, especially if the lesions are not visible or accessible by ultrasound. As CT-guided stereotaxy appears to be a very accurate targeting technique, the aim of this study was to evaluate the targeting accuracy, diagnostic yield, and ...
Tamrazi Anobel - - 2011
BACKGROUND: Clinical application efforts for the hepatocyte-specific MRI contrast agent gadolinium ethoxybenzyl diethylenetriamine pentaacetic acid (Gd-EOB-DTPA) have mainly been directed toward detection and characterization of various hepatic masses in the adult population. OBJECTIVE: Here we report our initial experience with Gd-EOB-DTPA for evaluating congenital and acquired hepatobiliary pathologies in the ...
Glodzik Lidia L Center of Excellence on Aging, Center for Brain Health, Department of Psychiatry, New York University School of Medicine, New York, NY 10016, USA. - - 2012
It is not well known whether Alzheimer's disease (AD) cerebrospinal fluid (CSF) biomarkers are associated with brain damage in cognitively normal elderly. The combined influence of CSF biomarkers and hypertension (HTN) on the gray matter (GM) is also not well described. One hundred fifteen cognitively healthy subjects (mean age 62.6 ...
Solé-Padullés Cristina - - 2011
We aimed to assess the association between core cerebrospinal fluid (CSF) biomarkers, regional brain atrophy and clinical severity in the Alzheimer's disease (AD) continuum, as well as to investigate how cognitive reserve (CR) may modulate these putative associations. Forty-nine subjects (11 controls, 10 patients with subjective memory complaints, 19 with ...
Park Hee-Jin - - 2011
The objective of our study was to evaluate the frequency and types of incidental findings of the lumbar spine during MR evaluation for herniated intervertebral disk disease. A total of 1268 patients (male-to-female ratio, 421:847; age range, 1-97 years) with clinically suspected herniated intervertebral disk disease underwent MRI of the ...
Pina Geraldine - - 2011
We report the case of a 3-year-old girl with intermittent rhinorrhea discovered after resolution of pneumococcal meningitis. Cerebral MRI and thin section CT were not conducive in this particular case. The 111In-DTPA planar cisternography confirmed but could not localize the cerebrospinal fluid leak. An anterior plasty was unsuccessful. A second ...
Martínez-Berganza Maria Teresa Escolar MT Department of Family and Community Medicine, Servicio de Urgencias del Hospital Clínico Universitario Lozano Blesa, Zaragoza. - - 2011
Total congenital occlusion of the foramina of Monro in adults is extremely rare. Only 9 cases have been reported. Clinically, this manifest as a biventricular hydrocephalus and the most frequent presenting symptom is headache. The diagnosis can be confirmed by computed tomographic scan or magnetic resonance imaging. Regarding treatment, neuroendoscopy ...
Kim Dong Wook DW Department of Neurology, Konkuk University Medical Center, Konkuk University School of Medicine, Seoul, - - 2011
Nonketotic hyperglycemia (NKH) is a clinical syndrome consisting of severe hyperglycemia, hyperosmolarity, and intracellular dehydration without ketoacidosis. Diverse neurologic symptoms have been described in patients with NKH, including hemichorea, seizure, hemianopsia, and coma, but the pathogenic explanation for these neurologic symptoms remains unclear. A 65-year-old female with poorly controlled diabetes ...
Ruiz-Ares Gerardo G Department of Neurology, University Hospital La Paz, Madrid, Spain. - - 2011
Primary diffuse leptomeningeal gliomatosis (PDLG) is a rare condition, with only 45 cases recorded to date, characterized by infiltration of the meninges by glial cells without evidence of primary tumor in the brain or spinal cord parenchyma. Here, we describe a patient with PDLG who was managed with tuberculostatic drugs ...
Martínez León M I - - 2011
OBJECTIVE: To show the main findings for anaplastic ependymoma on MRI. MATERIAL AND METHODS: We reviewed all patients diagnosed with anaplastic ependymoma at our tertiary hospital during a six-year period. We recorded the MRI findings for this type of tumor (on conventional sequences following the protocol for the study of ...
Fjell Anders M - - 2011
Early detection is vital in the quest to develop a cure for Alzheimer's disease (AD), and CSF biomarkers (Aβ42, t-tau, p-tau) and MRI morphometry distinguish AD from healthy controls. Aβ42 and neurodegenerative biomarkers may precede clinical symptoms, but it is not clear whether AD invariably follows and whether neuropsychological tests ...
Rohr A C - - 2011
BACKGROUND AND PURPOSE: IH can alter the configuration of anatomic structures of the central nervous system. We determined the sensitivity and specificity of MR imaging to detect these changes in patients with secondary IH. MATERIALS AND METHODS: Patients (n = 36) with IH were prospectively investigated with MR imaging and ...
Berritto D - - 2011
PURPOS: Acute mesenteric ischaemia (AMI) is a life-threatening vascular emergency with a high mortality rate. Early diagnosis is the key to reducing its mortality rate and improving the quality of life. Although computed tomography (CT) is still the gold standard for acute intestinal disorders, over the last few years, magnetic ...
Magarelli N - - 2011
PURPOSE: This study aimed to evaluate correlations between the position of the tibial tunnel, its alignment with the ligament-screw system, presence of intratunnel fluid, position of the tibial tunnel with respect to the Blumensaat line and clinical knee stability in patients who underwent arthroscopic reconstruction of the anterior cruciate ligament ...
Hanaoka Kohei - - 2011
PURPOSE: To clarify the change in the fluorodeoxyglucose (FDG) uptake by the bone marrow over time after administration of granulocyte colony-stimulating factor (G-CSF), we evaluated the correlation between the interval from the last day of administration of G-CSF to positron emission tomography/computed tomography (PET/CT) study and spinal bone marrow accumulation ...
de Souza Leonardo C - - 2011
Hippocampal atrophy as assessed by magnetic resonance imaging (MRI) and abnormal cerebrospinal fluid (CSF) biomarkers are supportive features for the diagnosis of Alzheimer's disease (AD) and are assumed to be indirect pathological markers of the disease. In AD patients, antemortem MRI hippocampal volumes (HVs) correlate with the density of neurofibrillary ...
Formaglio Maïté - - 2011
Our objective was to evaluate amyloid deposition in posterior cortical atrophy (PCA), using both cerebrospinal fluid (CSF) biomarker analysis and amyloid imaging. Five PCA patients, selected based on their neuropsychological profile and atrophic changes in posterior regions on MRI, underwent CSF analysis. CSF amyloid-beta 1-42, total tau, and phosphorylated tau ...
Chattopadhyay P - - 2011
We report a case of lupus presenting with focal as well as diffuse neurological deficits with intracranial and subarachnoid haemorrhages and diffuse hyperintense lesions in T2-weighted and fluid-attenuated inversion recovery images of brain magnetic resonance imaging proved by further investigation as demyelination, which completely recovered with intravenous methylprednisolone therapy. During ...
Carlson Andrew P - - 2011
BACKGROUND: Intraoperative imaging offers potential for utility in many clinical scenarios. Portable computed tomography (CT) offers a versatile potential alternative when immediate imaging may alter the surgical plan and magnetic resonance imaging is not practical. METHODS: The medical records from the University or New Mexico were reviewed for portable head ...
Lutz N W - - 2011
Cerebrospinal fluid (CSF) is being analyzed for the diagnosis of a variety of neurological diseases. Among the methods employed, metabolomics and proteomics are increasingly gaining popularity. At present, sensitivity and, in particular, specificity are limited in CSF metabolomics by nuclear magnetic resonance (NMR) spectroscopy. Nonetheless, progress is being made by ...
Boyce Cody J - - 2011
PURPOSE: To describe and characterize a distinctive MDCT artifact related to intra-scan transit of contrast-enhanced luminal fluid, which we term the "dense waterfall". MATERIALS AND METHODS: 179 consecutive CT colonography studies were reviewed for the presence of this distinctive artifact within the prepared and distended colon. In addition, a phantom ...
Muralidharan Rajanandini - - 2011
To demonstrate a rare but potential mechanism of quadriplegia in a patient with fulminant pneumococcal meningitis complicated by severe intracranial hypertension. Case report. Intensive care unit. Patient  A 21-year-old man who presented with 3 days of headache, combativeness, and fever. Intervention  Antibiotics and steroids were initiated after lumbar puncture yielded ...
Probst R - - 2011
Any single permanent or electro magnet will always attract a magnetic fluid. For this reason it is difficult to precisely position and manipulate ferrofluid at a distance from magnets. We develop and experimentally demonstrate optimal (minimum electrical power) 2-dimensional manipulation of a single droplet of ferrofluid by feedback control of ...
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