Search Results
Results 1 - 50 of 1317
1 2 3 4 5 6 7 8 9 10 >
Chen Long L Division of Neuroradiology, Department of Medical Imaging, Toronto Western Hospital, University Health Network, - - 2014
Clinical and imaging manifestations of the so-called partially thrombosed aneurysm (PTA) are different from those of the classic intracranial saccular aneurysm. Given some of their peculiar imaging features, it had been hypothesized that some PTAs occur due to repeated intramural hemorrhages. The authors present a case of PTA that evolved ...
Duan Shaoyin S Department of Medical Imaging, The Ottawa Hospital, University of Ottawa, Canada; Department of Medical Imaging, Zhongshan Hospital of Xiamen University, Xiamen, Fujian 361004, - - 2014
Magnetic resonance imaging (MRI) has advantages in showing pathologic changes of disc space infection, which is important in clinical treatment. The purpose of this study was to describe the MRI findings of disc space infections in relation to chronicity. MRI of 60 patients from January 1, 2002 to April 30, ...
Lips Leonie M J LM From the Departments of Radiology (L.M.J.L., M.T.d.W., P.C.G.S.) and Clinical Epidemiology (M.L.G.J.), VieCuri Medical Centre, Tegelseweg 210, 5912 BL Venlo, the Netherlands; Department of Radiology, Maxima Medical Centre, Veldhoven, the Netherlands (P.T.J.C.); Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, Wis (P.J.P.); and Department of Radiology, Albert Schweitzer Hospital, Dordrecht, the Netherlands - - 2014
Purpose To retrospectively identify morphologic findings at computed tomographic (CT) colonography that are the most reliable in the differentiation of masslike chronic diverticular disease from sigmoid carcinoma in a large patient cohort. Materials and Methods This study was approved by the institutional review boards. The need for signed consent was ...
Patzig Maximilian - - 2014
BackgroundThe specificity of computed tomography (CT) for subarachnoid haemorrhage (SAH) is very high. However, physicians should be aware of rare false positive findings, also referred to as ¿pseudo-SAH¿. We present an unusual case in which such a finding was caused by chronic hypoxaemia.Case presentationA 37-year-old male Caucasian patient presented with ...
Redondo-Alonso Lucía - - 2014
Chronic supraspinatus tendinopathy is a common clinical problem that causes functional and labor disabilities in the population. It is the most frequent cause of shoulder pain. This pathology may be frequently associated to the affectation of the long head of biceps tendon (LHBT), the main stabilizer of the glenohumeral joint ...
Szabo David D Cummings School of Veterinary Medicine at Tufts University, Department of Clinical Sciences, 200 Westboro Road, North Grafton, MA, - - 2014
Computed tomography is increasingly being used in veterinary medicine to evaluate animals with pulmonary signs such as coughing, tachypnea, and exercise intolerance, however, a quantitative measure of bronchial wall thickening has yet to be validated in veterinary medicine. Canine chronic bronchitis is a disease that is characterized histologically by thickening ...
Borich Michael R MR Division of Physical Therapy, Department of Rehabilitation Medicine, School of Medicine, Emory University, Atlanta, GA, - - 2014
Purpose: Rehabilitation interventions need to be optimized to maximize therapeutic effects and minimize stroke-related disability. However, a comprehensive understanding of the neural substrates underlying recovery is lacking. The purpose of this study was to investigate relationships between brain anatomy, physiology and hand motor function in individuals with chronic stroke. Methods: ...
Johnson Darren L - - 2014
Anterior cruciate ligament (ACL) tears are commonly seen injuries. Initially, these injuries are routinely evaluated with radiographs, followed by magnetic resonance imaging (MRI). The altered kinematics at the time of injury or for the duration of a chronic tear can create indirect findings on radiographs and MRI. These signs may ...
Manikkavasakar Sriluxayini S Sriluxayini Manikkavasakar, Mamdoh AlObaidy, Kiran K Busireddy, Miguel Ramalho, Viragi Nilmini, Madhavi Alagiyawanna, Richard C Semelka, Department of Radiology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-7510, United - - 2014
Magnetic resonance (MR) imaging plays an important role in the diagnosis and staging of acute and chronic pancreatitis and may represent the best imaging technique in the setting of pancreatitis due to its unmatched soft tissue contrast resolution as well as non-ionizing nature and higher safety profile of intravascular contrast ...
Kancherla Vamsi K VK Department of Orthopaedic Surgery, St. Luke's University Hospital, 801 Ostrum Street, PPHP2, Bethlehem, PA 18015, - - 2014
High valgus and extension loads imparted to the athlete's elbow during repetitive overhead throwing can lead to acute and chronic pathology. Over time, normal soft tissue and bony stabilizing structures of the elbow undergo progressive structural changes and can succumb to injury. Modern diagnostic modalities, including plain radiographs, computed tomography, ...
Xie Xueqian X 1 Department of Radiology, University of Groningen, University Medical Center Groningen, Groningen, The - - 2014
OBJECTIVE. In lung cancer screening, the prevalence of chronic respiratory symptoms is high among heavy smokers. The purpose of this study was to compare CT-derived airway wall measurements between male smokers with and those without chronic respiratory symptoms. MATERIALS AND METHODS. Fifty male heavy smokers with chronic respiratory symptoms (cough, ...
Niu Xiangke X Department of Radiology, Affiliated Hospital of Chengdu University, Chengdu, Sichuan 610081, - - 2014
Several previous studies have shown that diffusion-weighted imaging (DWI) can provide additional information for focal pancreatic lesions by demonstrating more restricted diffusion in solid malignant tumors than in chronic pancreatitis, which can be indicated by a decreased apparent diffusion coefficient (ADC). However, these studies have a modest sample size and ...
Wisnowski Jessica L JL Department of Pediatric Radiology, Children׳s Hospital of Pittsburgh of the University of Pittsburgh Medical Center, University of Pittsburgh School of Medicine, Pittsburgh, - - 2014
Infants with chronic bilirubin encephalopathy often demonstrate abnormal bilateral, symmetric, high-signal intensity on T2-weighted magnetic resonance imaging of the globus pallidus and subthalamic nucleus, consistent with the neuropathology of kernicterus. Early magnetic resonance imaging of at-risk infants, while frequently showing increased T1-signal in these regions, may give false-positive findings due ...
Zuiderbaan Hendrik A HA Sports Medicine and Shoulder Service, Department of Orthopaedic Surgery, Hospital for Special Surgery, Weill Medical College of Cornell University, New York, NY, United States. Electronic address: - - 2014
In an effort to minimize graft impingement among various ACL deficient states, we sought to quantitatively determine requirements for bone resection during notchplasty with respect to both volumetric amount and location. A validated method was used to evaluate Magnetic Resonance Imaging scans. We measured the ATT of the medial and ...
Zhovtis Ryerson Lana L NYU Langone Multiple Sclerosis Comprehensive Care Center, New York, NY, USA. Electronic address: - - 2014
Adult-onset, chronic progressive spastic paraparesis may be due to a large number of causes and poses a diagnostic challenge. There are no recent evidence-based guidelines or comprehensive reviews to help guide diagnostic work-up. We survey the literature on chronic progressive spastic paraparesis, with special emphasis on myelopathies, and propose a ...
Lai W S - - 2014
The frontal sinus has the most complex and variable drainage routes of all paranasal sinus regions. The goal of this study was to identify these anatomical factors and inflammation areas relating to chronic frontal sinusitis by comparing radiological presentations in patients with and without frontal sinusitis. All adult patients with ...
Kurup Seema S Department of Oral Medicine & Radiology, Amrita School of Dentistry, AIMS Campus, Ponekkara, Kochi- 682041, India; Tel: +91-9995504580; e-mail: - - 2014
Advances in radiology have helped in early diagnosis, surveillance and proper management of disease processes. SPECT scintigraphy is an imaging modality that helps in the detection & diagnosis of facial & skull osteomyelitis and is also useful for detecting silent lesions. Pentoxifylline -tocopherol together helps in faster healing of diseased ...
Albert Pradeep P Professor, New York College of Podiatric Medicine, New York, NY. Electronic address: - - 2014
Fracture of the posteromedial tubercle of the talus is an uncommon injury that is often missed on plain radiographs. In the present report, we describe the case of an adult male with a chronic nonunited fracture of the medial tubercle of the posterior process of the talus after having undergone ...
Desideri Ilaria I Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa; Pisa, Italy - - - 2014
A 22-year-old man with acute lymphoblastic leukaemia was referred to our observation for headache, cervical pain and sopor. A computed tomography study revealed triventricular obstructive hydrocephalus due to a left cerebellar hyperdense mass impinging on the fourth ventricle. A magnetic resonance study demonstrated an area of hyperintensity on T2-weighted images, ...
Maniar Hersh S HS Department of Surgery, Washington University School of Medicine, St Louis, Mo. Electronic address: - - 2014
The clinical guidelines for asymptomatic patients with chronic mitral regurgitation (MR) use the ejection fraction (EF) to trigger surgical referral. We hypothesized that the EF is not sensitive enough to detect the earliest contractile injury in chronic MR and that the injury associated with chronic MR is not global but ...
Roosenburg S S Department of Radiology and Nuclear Medicine, Radboud University Medical Center , 6500 HB Nijmegen, The - - 2014
Cholecystokinin-2 (CCK-2) receptors, overexpressed in cancer types such as small cell lung cancers (SCLC) and medullary thyroid carcinomas (MTC), may serve as targets for peptide receptor radionuclide imaging. A variety of CCK and gastrin analogues has been developed, but a major drawback is metabolic instability or high kidney uptake. The ...
Hynes S L SL Division of Plastic and Reconstructive Surgery, The Hospital for Sick Children, Toronto, Ontario, - - 2014
We describe the CT angiography protocol and surgical technique utilized at our institution for single-stage release of adjacent web-spaces in non-Apert syndactyly. In a series of seven consecutive hands we analyse syndactyly anatomy, CT angiographic findings, operative details, and complications. Outcomes were assessed with a functional activity evaluation, range of ...
Verburg Frederik A FA From the *Department of Nuclear Medicine, RWTH Aachen University Hospital, Aachen, Germany; †Department of Nuclear Medicine, Maastricht University Medical Center, Maastricht, The Netherlands; ‡Department of Pathology, University Hospital Düsseldorf, Düsseldorf, Germany; and §Department of Endocrinology, RWTH Aachen University Hospital, Aachen, - - 2014
A 51-year-old man with a history of metastatic medullary thyroid cancer (MTC) presented with high adrenocorticotropin (ACTH) and urinary free cortisol levels. The diagnosis of ectopic ACTH production, a rare MTC complication, was established in this patient. PET/CT using the somatostatin analogue DOTA-(Tyr)-octreotate labeled with gallium (Ga-DOTATATE) was performed, showing ...
Lococo Filippo F Unit of Thoracic Surgery, IRCCS-Arcispedale Santa Maria Nuova, Reggio Emilia, Italy . - - 2014
Bronchial carcinoids (BC) are rare well-differentiated neuroendocrine tumours (NET) sub-classified into typical (TC) and atypical carcinoids (AC). A correct pathological identification in the pre-operative setting is a key element for planning the best strategy of care, considering the different biological behavior of TC and AC. Controversial results have been reported ...
Sharma Punit P Department of Nuclear Medicine, All India Institute of Medical Sciences, New Delhi, - - 2014
Neuroendocrine tumors (NETs) are rare neoplasms characterized by overexpression of somatostatin receptors (SSTRs). Functional imaging plays a crucial role in management of NETs. Recently, positron emission tomography/computed tomography (PET/CT) with (68)Gallium ((68)Ga)-labeled somatostatin analogues has shown excellent results for imaging of NETs and better results than conventional SSTR scintigraphy. In ...
Mojtahedi Alireza A Excel Diagnostics and Nuclear Oncology Center 9701 Richmond Ave #122, Houston, TX 77042, USA ; RadioMedix, Inc. 9701 Richmond Ave #222, Houston, TX 77042, - - 2014
Neuroendocrine tumors (NETs) are rare group of neoplasms arising from nervous and endocrine systems. Somatostatin analogue imaging is a functional imaging modality of choice for evaluating the NETs. Recent availability of positron emitting radioisotope labeled somatostatin analogues to image neuroendocrine cancers, has raised the interests to use this new imaging ...
Neugarten Joel J Renal Division, Montefiore Medical Center, Albert Einstein College of Medicine, Bronx, NY, - - 2014
Blood oxygen level-dependent magnetic resonance imaging (BOLD MRI) has recently emerged as an important noninvasive technique to assess intrarenal oxygenation under physiologic and pathophysiologic conditions. Although this tool represents a major addition to our armamentarium of methodologies to investigate the role of hypoxia in the pathogenesis of acute kidney injury ...
Berkolaiko Gregory G Department of Mathematics, Texas A&M University, , College Station, TX 77843-3368, - - 2014
We prove an analogue of the magnetic nodal theorem on quantum graphs: the number of zeros of the nth eigenfunction of the Schrödinger operator on a quantum graph is related to the stability of the nth eigenvalue of the perturbation of the operator by magnetic potential. More precisely, we consider ...
Wehner Tim T Department of Clinical Neurophysiology, National Hospital for Neurology and Neurosurgery, London, United Kingdom; Department of Clinical and Experimental Epilepsy, Institute of Neurology, University College of London, London, United - - 2013
Functional imaging studies complement structural magnetic resonance imaging (MRI) in the assessment of patients with brain tumor-associated focal epilepsy. (11) C-Methionine (MET) and (18) F-fluoro-ethyl-l-tyrosine (FET) are amino acid analogues that highlight metabolically active areas in positron emission tomography (PET). Ictal single photon emission computed tomography (SPECT) can provide information ...
Schuster David M DM Department of Radiology and Imaging Sciences, Emory University, Atlanta, Georgia. Electronic address: - - 2014
We prospectively evaluated the amino acid analogue positron emission tomography radiotracer anti-3-[(18)F]FACBC compared to ProstaScint® ((111)In-capromab pendetide) single photon emission computerized tomography-computerized tomography to detect recurrent prostate carcinoma. A total of 93 patients met study inclusion criteria who underwent anti-3-[(18)F]FACBC positron emission tomography-computerized tomography plus (111)In-capromab pendetide single photon emission ...
Panagiotidis Emmanouil E Institute of Nuclear Medicine, University College London Hospitals NHS Trust, London, - - 2014
The most widely used PET radiopharmaceutical in daily clinical practice is (18)F-fluorodeoxyglucose (FDG). The evaluation of glycolytic metabolism by (18)F-FDG is potentially useful in identifying high-risk patients with aggressive neuroendocrine disease associated with a poor outcome. Although the use of new somatostatin analogues labeled with 68-Gallium for PET has significantly ...
Skoura Evangelia E Nuclear Medicine Department, Evangelismos Hospital, Athens, - - 2013
Inherited and sporadic medullary thyroid cancer (MTC) is an uncommon and medically challenging malignancy. Even if the extent of initial surgery is deemed adequate, the recurrence rate remains high, up to 50% in most series. Measurement of serum calcitonin is important in the follow-up of patients with MTC, and reliably ...
Coronado Eugenio - - 2013
The magnetoresistance (MR) effect of thin films of the Prussian Blue Analogue (PBA) Cr5.5(CN)12·11.5H2O, prepared by electrochemical deposition, has been measured using the standard two-point probe method. This molecule-based ferrimagnetic material, with a Tc = 240 K, exhibits MR up to 2% at 6 T and 200 K.
Vettiyil Beth B Radiology Research Fellow, Diagnostic Radiology, Massachusetts General Hospital, Boston 02114, - - 2013
Sarcoidosis is a chronic granulomatous disease of unknown origin. There are several modalities for diagnosis, staging and therapeutic management of patients with sarcoidosis. Among these, whole-body F-18 fluorodeoxyglucose (FDG) positron emission tomography/computed tomography is found to useful in patients with complex and multisystem forms of sarcoidosis. Other modalities include Gallium ...
Goizueta-Adame Carlos C - - 2013
The study describes the arthoscopic use of resorbable pins for the internal derangement of the temporomandibular joint with McCain's technique. Clinical and image features are reported retrospectively. Twenty-seven consecutive patients (34 joints) were included. Symptomatic internal derangement and anterior-medial disc displacement with or without reduction in magnetic resonance images (MRI) ...
Kim Sang Woo - - 2013
To suggest a new useful diagnostic technique, principles of the selective excitation technique-magnetic resonance images (Proset-MRI), and to know the precise radiologic findings that can prove symptomatic foraminal and extraforaminal stenosis at L5-S1. Nineteen patients with symptomatic L5-S1 stenosis were checked by Proset-MRI. Four patients were performed decompressive surgery and ...
Lee J-S - - 2013
A number of recent transport and magnetization studies have shown signs of ferromagnetism in the LaAlO3/SrTiO3 heterostructure, an unexpected property with no bulk analogue in the constituent materials. However, no experiment thus far has provided direct information on the host of the magnetism. Here we report spectroscopic investigations of the ...
Law W Phillip - - 2013
Gallium-68 ((68) Ga)-labelled somatostatin analogue imaging by positron emission tomography (PET) is increasingly replacing single photon (such as (111) In-labelled octreotide) imaging in the detection and staging of carcinoid and other neuroendocrine tumours. Among other tissues, pituitary uptake of 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid-octreotate (DOTA-TATE) and other somatostatin analogues is physiological. DOTA-TATE also ...
Scott Julia A JA Biomedical Image Computing Group, Departments of Pediatrics, Bioengineering, and Radiology, University of Washington, Seattle, WA 98195, USA. - - 2012
To date, growth of the human fetal cerebellum has been estimated primarily from linear measurements from ultrasound and 2D magnetic resonance imaging (MRI). In this study, we use 3D analytical methods to develop normative growth trajectories for the cerebellum in utero. We measured cerebellar volume, linear dimensions, and local surface ...
Beatty Brian Lee - - 2012
Modern manatees have a unique type of tooth development, continually forming identical new molars in the posterior end of each quadrant of their mouths, and then progressively moving teeth anteriorly, only to reabsorb roots and spit out worn crowns. This process is not only developmentally complex, but requires space in ...
Erickson Laura C - - 2012
We piloted a suite of approaches aimed to facilitate a successful series of up to four brain and muscle (31)Phosphorus-Magnetic Resonance Spectroscopy ((31)P-MRS) scans performed in one session in 12 awake, non-sedated subjects (ages 6-18), 6 with autism spectrum disorders (ASD) and 6 controls. We targeted advanced preparation, parental input, ...
Brustad Eric M - - 2012
New tools that allow dynamic visualization of molecular neural events are important for studying the basis of brain activity and disease. Sensors that permit ligand-sensitive magnetic resonance imaging (MRI) are useful reagents due to the noninvasive nature and good temporal and spatial resolution of MR methods. Paramagnetic metalloproteins can be ...
Yu Jian-Xin - - 2012
There is increasing interest in the development of reporter agents to reveal enzyme activity in vivo using small animal imaging. We have previously demonstrated the feasibility of detecting lacZ gene activity using the commercially available 3,4-cyclohexenoesculetin-β-D-galactopyranoside (S-Gal™) as a (1)H MRI reporter. Specifically, β-galactosidase (β-gal) releases the aglycone, which forms ...
Tessler Franklin N - - 2012
Our goal was to investigate the effect of displayed image magnification on perception of the size of hepatic lesions on abdominal computed tomography (CT) scans. Institutional review board approval and informed observer consent were obtained. Three experienced radiologists reviewed 90 CT image pairs in one session. Each image pair demonstrated ...
Jones M - - 2012
This paper presents the design of the 'Tree Hugger', an open access, transportable, 1.1MHz (1)H nuclear magnetic resonance imaging system for the in situ analysis of living trees in the forest. A unique construction employing NdFeB blocks embedded in a reinforced carbon fibre frame is used to achieve access up ...
Jung Brian C BC Department of Neurology, The Johns Hopkins University, School of Medicine, Baltimore, MD 21287, - - 2012
In this study, we used manual delineation of high-resolution magnetic resonance imaging (MRI) to determine the spatial and temporal characteristics of the cerebellar atrophy in spinocerebellar ataxia type 2 (SCA2). Ten subjects with SCA2 were compared to ten controls. The volume of the pons, the total cerebellum, and the individual ...
Ebrahimi Behzad B Division of Nephrology and Hypertension, Mayo Clinic, Rochester, MN 55905, - - 2012
Functional blood oxygenation level-dependent (BOLD) magnetic resonance imaging is a powerful tool to assess renal function, but BOLD analysis using T2* image differentiation of cortex and medulla is laborious and prone to errors. We developed and validated an alternative compartmental analysis method to differentiate renal cortical and medullary BOLD relaxivity ...
Kao Hung-Wen - - 2012
OBJECTIVES: To investigate the ability of susceptibility-weighted imaging (SWI) to predict stroke evolution in comparison with perfusion-weighted imaging (PWI). METHODS: In a retrospective analysis of 15 patients with non-lacunar ischaemic stroke studied no later than 24 h after symptom onset, we used the Alberta Stroke Program Early CT Score (ASPECTS) to ...
Evans Benjamin A - - 2012
Magnetic elastomers have been widely pursued for sensing and actuation applications. Silicone-based magnetic elastomers have a number of advantages over other materials such as hydrogels, but aggregation of magnetic nanoparticles within silicones is difficult to prevent. Aggregation inherently limits the minimum size of fabricated structures and leads to non-uniform response ...
Dʼsouza Maria Mathew - - 2012
A 58-year-old woman with breast carcinoma, after mastectomy, radiotherapy, and chemotherapy, underwent a whole-body F-18 FDG PET/CT for restaging, which revealed multiple skeletal metastasis. Hypometabolism was noted in the right frontal lobe. The patient subsequently underwent a C-11 methionine brain scan, which demonstrated multiple dural-based metastatic foci confirmed on contrast-enhanced ...
1 2 3 4 5 6 7 8 9 10 >