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Reyhan Meral M Biomedical Physics Interdepartmental Program, University of California, Los Angeles, California, USA; Department of Bioengineering, University of California, Los Angeles, California, - - 2014
To evaluate the relationship between left ventricular (LV) twist, shear, and twist-per-volume and the severity of mitral regurgitation (MR). Primary MR is a valvular disorder that induces LV dysfunction. There exist several measures of LV rotational mechanics, but it remains unclear which measure of LV dysfunction best accords with the ...
Jissendi-Tchofo Patrice P Department of Neuroradiology, MRI 3T Research, Plateforme Imagerie du vivant, IMPRT-IFR 114, University Hospital of Lille (CHRU), 59037, Lille-Cedex, France, - - 2014
Neuroimaging techniques including structural magnetic resonance imaging (MRI) and functional positron emission tomography (PET) are useful in categorizing various midbrain-hindbrain (MHB) malformations, both in allowing diagnosis and in helping to understand the developmental processes that were disturbed. Brain imaging phenotypes of numerous malformations are characteristic features that help in guiding ...
Kanal Emanuel E From the Department of Radiology, University of Pittsburgh Medical Center, Pittsburgh, Pa (E.K., E.S.); Department of Radiology, University of Minnesota, 420 Delaware St, SE MMC 292, Minneapolis, MN 55455 (J.F.); Department of Radiology and Biomedical Imaging, University of California at San Francisco and UCSF-Benioff Children's Hospital, San Francisco, Calif (A.J.B.); Department of Radiology, University of Colorado, Denver, Colo (J.B.); Department of Radiology, University of California San Diego Medical Center, San Diego, Calif (W.B.); Cardiology Associates of East Tennessee, Knoxville, Tenn (J.R.G.); Office of Clinical Affairs, University of Michigan Health System and Red Forest Consulting LLC, Ann Arbor, Mich (J.G.); Proscan International, Cincinnati, Ohio (T.G.); Department of Medical Physics, University of Wisconsin-Madison, Madison, Wis (E.J.); Radiology Associates of Fox Valley, Neenah, Wis (P.L.); Durham Radiology Associates, Durham, NC (J.L.); Keck School of Medicine, University of Southern California, Los Angeles, Calif (F.G.S.); Department of Radiology, Yale School of Medicine, New Haven, Conn (J.W.); Department of Cardiovascular Medicine, Cleveland Clinic, Cleveland, Ohio (B.L.W.); and Department of Quality and Safety, American College of Radiology, Reston, Va - - 2014
Considerable confusion exists among the magnetic resonance (MR) imaging user community as to how to determine whether a patient with a metal implanted device can be safely imaged in an MR imaging unit. Although there has been progress by the device manufacturers in specifying device behavior in a magnetic field, ...
Boellis Alessandro A Neuroradiology NESMOS Department, University of Rome "La Sapienza" and Azienda Ospedaliera Sant'Andrea, Via di Grottarossa, 1035/1039, Rome, Italy, - - 2014
Pituitary apoplexy (PA) is a rare and potentially fatal clinical condition presenting acute headache, vomiting, visual impairment, ophthalmoplegia, altered mental state and possible panhypopituitarism. It mostly occurs in patients with haemorrhagic infarction of the pituitary gland due to a pre-existing macroadenoma. Although there are pathological and physiological conditions that may ...
Tanaka Masato M Department of Orthopaedic Surgery, Okayama University Hospital, Okayama 700-8558, - - 2014
Spinal deformity is an important clinical manifestation of Chiari I malformation (CM-I) and syringomyelia. Here we report the result of an 8-year follow-up of a 13-year-old girl with severe scoliosis associated with Chiari malformation and a large syringomyelia. The patient presented at our hospital at the age of 13 with ...
Malatt Camille C University of California, San Diego School of Medicine, San Diego, - - 2014
The use of noncontrast head computed tomography (CT) has become commonplace in the emergency department (ED) as a means of screening for a wide variety of pathologies. Approximately 1 in 14 ED patients receives a head CT scan, and analyzing and interpreting this high volume of images in a timely ...
Pedicelli Stefania S D.P.U.O. "Bambino Gesù" Children's Hospital - Tor Vergata University (S.P., P.A., G.S., SC), Rome, Italy; Endocrinology and Diabetes Unit, "Bambino Gesù" Children's Hospital (M.C.), Rome, Italy; Department of Women's and Children's Health (S.C.), Karolinska Institutet, Stockholm, - - 2014
Context: It is still controversial whether all girls with central precocious puberty (CPP) should undergo brain MRI for unveiling intracranial pathology. Objectives: To determine the prevalence and type of intracranial lesions in otherwise normal girls with central precocious puberty (idiopathic CPP) and to identify the clinical and biochemical predictors of ...
Arooj Shumaila - - 2014
Piriformis syndrome is a rare entity resulting in severe unilateral isolated buttock pain shooting in nature, non discogenic in origin. MR imaging of pelvis plays an important role in such patients to see the normal anatomy of piriformis muscle and its relationship with sciatic nerve. A 35-year-old woman presented with ...
Kashyap Raghava R Department of Nuclear Medicine & PET, Postgraduate Institute of Medical Education and Research, Chandigarh 160 012, - - 2014
Contrast enhanced computerized tomography (CECT) is used to determine severity of acute pancreatitis based upon the presence and extent of necrosis. However limitations do exist precluding its applicability in renal failure. Positron emission tomography (PET) imaging for cardiac perfusion shows good uptake of N-13 ammonia ((13)NH3) metabolites in pancreas owing ...
Wee Chong-Yaw CY Image Display, Enhancement, and Analysis (IDEA) Laboratory, Biomedical Research Imaging Center (BRIC) and Department of Radiology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, United States of - - 2014
Internet addiction disorder (IAD) is increasingly recognized as a mental health disorder, particularly among adolescents. The pathogenesis associated with IAD, however, remains unclear. In this study, we aim to explore the encephalic functional characteristics of IAD adolescents at rest using functional magnetic resonance imaging data. We adopted a graph-theoretic approach ...
Parente Daniella Braz DB D'Or Institute for Research and Education, Rio de Janeiro, Brazil; Federal University of Rio de Janeiro, Rio de Janeiro, - - 2014
To investigate if magnetic resonance spectroscopy (MRS) is the best Magnetic Resonance (MR)-based method when compared to gradient-echo magnetic resonance imaging (MRI) for the detection and quantification of liver steatosis in diabetic patients in the clinical practice using liver biopsy as the reference standard, and to assess the influence of ...
Güler Sibel S Trakya University, Faculty of Medicine, Department of Neurology, Edirne. - - 2013
Ataxia and tremor are rare manifestations of hepatocerebral degeneration due to portovenous shunts. Ammonia is a neurotoxin that plays a significant role in the pathogenesis of hepatic encephalopathy. A 58-year old male patient was assessed with the complaints of gait disturbance, hand tremor, and impairment of speech. His neurological examination ...
Khangembam Bangkim C - - 2013
We assessed the value of N-ammonia PET-computed tomography (PET/CT) in recurrent glioma and compared the results with those of contrast-enhanced MRI (CE MRI). Fifty-two (mean age, 39.8±11.6 years; male, 33; female, 19) histopathologically proven and previously treated glioma patients with clinical suspicion of recurrence were evaluated with N-ammonia PET/CT and ...
Shi Xinchong - - 2013
OBJECTIVE: Noninvasive evaluation of glioma is of great help for clinical practice. In this study, we investigated the utility of N-ammonia in the evaluation of untreated gliomas and compared the results with that of F-FDG. METHODS: Forty-five consecutive patients with final diagnosis of glioma were included in this study. PET/CT ...
Zaidi Habib - - 2013
The use of coronary calcium scoring (CaScCT) for attenuation correction (AC) of (13)N-ammonia PET/CT studies (NH3) is still being debated. We compare standard ACCT to CaScCT using various respiratory phases and co-registration methods for AC. Forty-one patients underwent a stress/rest NH3. Standard ACCT scans and CaScCT acquired during inspiration (CaScCTinsp, ...
Kitaoka Mayuko - - 2013
A 72-year-old man presented with consciousness disturbance. The results of brain magnetic resonance imaging and cerebrospinal fluid examination were normal, but triphasic waves were noted on electroencephalography. His plasma ammonia level was elevated due to which encephalopathy secondary to hyperammonemia was suspected. However, his liver function was normal, and no ...
Choi Jong Mun - - 2013
We report on a 55-year-old man with alcoholic liver cirrhosis who presented with status epilepticus. Laboratory analysis showed markedly elevated blood ammonia. Brain magnetic resonance imaging (MRI) showed widespread cortical signal changes with restricted diffusion, involving both temporo-fronto-parietal cortex, while the perirolandic regions and occipital cortex were uniquely spared. A ...
Yao Chuang - - 2013
A novel magnetic carrier with surface magnetic field of 4 mT was developed for studying the magnetic enhanced bio-effect on nitrification. The bio-effect on nitrificaton induced by the magnetic carrier was studied by comparing the performance of sequencing batch biofilm reactors filled with magnetic (MC) and non-magnetic (NMC) carriers. The ...
Gunz Anna Catherine AC Division of Critical Care, Department of Pediatrics, University of Ottawa, Children's Hospital of Eastern Ontario, Ottawa, ON, - - 2013
The urea-cycle functions to facilitate ammonia excretion, a disruption of which results in the accumulation of toxic metabolites. The neurological outcome of neonatal-onset urea-cycle defects (UCDs) is poor, and there are no good predictors of prognosis beyond ammonia levels at presentation. The role of neuroimaging in the prognosis of neonatal-onset ...
Sacanna Stefano - - 2012
We introduce a new class of spherical colloids that reversibly self-assemble into well-defined non-linear structures by virtue of "magnetic patches". This assembly is driven by tunable magnetostatic binding forces that originate from microscopic permanent magnets embedded underneath the surface of the particles. The resulting clusters form spontaneously in the absence ...
Cui Jun - - 2012
The purpose of this study was to explore the value of double-balloon enteroscopy combined with abdominal vascular-enhanced CT examination for the diagnosis of intestinal vascular malformation bleeding, to explore a simple and effective method for the diagnosis of small intestinal vascular malformation bleeding. Ten patients with intestinal bleeding were first ...
Sivam Sheila S Sleep and Circadian Research Group, Woolcock Institute of Medical Research, PO Box M77, Missenden Road, NSW 2050, Australia. - - 2012
The aim of the present study was to investigate the effect of continuous positive airway pressure (CPAP) treatment on regional adipose tissue distribution in patients with moderate or severe obstructive sleep apnoea. Patients received both therapeutic and sham CPAP in a random order for 2 months each with an intervening ...
Bible Ellen E Kings College London, Institute of Psychiatry, Department of Neuroscience, London SE5 9NU, - - 2012
Transplantation of human neural stem cells (hNSCs) is emerging as a viable treatment for stroke related brain injury. However, intraparenchymal grafts do not regenerate lost tissue, but rather integrate into the host parenchyma without significantly affecting the lesion cavity. Providing a structural support for the delivered cells appears important for ...
Lenoir Laurence - - 2012
Identifying gastroduodenal uptake of (99m)Tc-macroaggregated albumin (MAA), which is associated with an increased risk of ulcer disease, is a crucial part of the therapeutic management of patients undergoing radioembolization for liver tumours. Given this context, the use of MAA single photon emission computed tomography (SPECT)/CT may be essential, but the ...
Kim Hyun Min - - 2012
Old chemistry for novel materials: Self-fluorescent high-relaxivity T(2) -weighted magnetic resonance imaging (MRI) contrast agents are produced. They are a novel type of MR/optical dual-modality in vivo imaging nanoprobe using glutaraldehyde crosslinking chemistry, and they are used to label and monitor therapeutic cells both in vitro and in vivo.
Burke Michael P - - 2011
The recognition of a well defined basal layer of radio dense material on the postmortem computed tomography (CT) images, in the setting of typical scene findings of an intentional medication overdose and unremarkable external examination of the deceased's body can, in certain circumstances, permit such cases to be managed without ...
Garner Hillary Warren - - 2011
Posttreatment imaging is important to ensure early detection of oncological complications, and appropriate timing and frequency is an important consideration, especially in high-risk patients. Focused magnetic resonance (MR) imaging is the preferred modality for detection of local recurrence of soft tissue tumors and is also used in high-risk osteosarcoma. Although ...
Sotelo Julio - - 2011
Neurocysticercosis (NCC) is the most frequent parasitic disease of the human brain. Modern imaging studies, CT and MRI, have defined the diagnosis and characterization of the disease. Through these studies the therapeutic approach for each case may be individualized with the aid of antihelmintics, steroids, symptomatic medicines, or surgery. The ...
Benter Thomas - - 2011
This pictorial essay will review and discuss the aspects of differential diagnosis with splenic sonography, including recent literature and exemplary pictorial sonographic cases. Although the spleen is well evaluated by computed tomography and magnetic resonance imaging, sonography has certain advantages, including its ubiquitous availability, lack of ionizing radiation, and low ...
Oliva Francesco - - 2011
Calcific tendinopathy (CT) of the tendons of the rotator cuff is common in white populations, with a reported prevalence varying from 2.7% to 22%, mostly affecting women between 30 and 50 years. Although CT shows a strong tendency toward self-healing by spontaneous resorption of the deposits, it does not always ...
Tennyson Christina A - - 2011
The small intestine has been difficult to examine by traditional endoscopic and radiologic techniques. Within the past 10 years, advances have led to an explosion of technologies that facilitate examination of the entire small intestine. Wireless video capsule endoscopy, deep enteroscopy using balloon-assisted or spiral techniques, computer tomography (CT) and magnetic ...
Yoo Dongwon - - 2011
Early detection and treatment of disease is the most important component of a favorable prognosis. Biomedical researchers have thus invested tremendous effort in improving imaging techniques and treatment methods. Over the past decade, concepts and tools derived from nanotechnology have been applied to overcome the problems of conventional techniques for ...
Mirzaei Siroos - - 2011
Objective: Peptide receptor-targeted radionuclide therapy (PRRT) of somatostatin receptor (SR)-expressing neuroendocrine tumors (NETs) has become an established therapeutic option in patients with advanced NETs. The aim of this study was to compare the lesion detection rate of (99m)Tc-EDDA/HYNIC-TOC, a newly developed tracer for NET imaging, with (177)Lu-DOTATATE used for PRRT. ...
Celebi Irfan - - 2011
OBJECTIVE: To determine the clinical utility of using dynamic maneuvers during imaging of larynx via 256-Slice Multi-Detector Computed Tomography in the pre-therapeutic evaluation of laryngeal tumors. MATERIALS AND METHODS: A total of 27 patients (7 women, 20 men; aged 53-76 years) diagnosed with laryngeal squamous cell carcinoma were evaluated pre-therapeutically ...
Steinle Brad - - 2011
Strokes are a leading cause of death and disability in the U.S. Comprehensive rehabilitation is needed to minimize disability. Theories that serve as a basis for recovery following stroke and therapeutic techniques used to potentiate recovery are discussed. Neuroplasticity is the potential for change in brain function. Functional brain images ...
Ho Don - - 2011
Effective medical care requires the concurrent monitoring of medical treatment. The combination of imaging and therapeutics allows a large degree of control over the treatment efficacy and is now commonly referred to as "theranostics". Magnetic nanoparticles (NPs) provide a unique nanoplatform for theranostic applications because of their biocompatibility, their responses ...
Brizel David M - - 2011
Novel noninvasive functional imaging methods are necessary to predict therapeutic outcome and thereby improve the ability to properly select patients for treatment with both conventional and targeted therapies, to better evaluate therapeutic effectiveness during the early phases of treatment, and to enhance a priori risk assessment for treatment induced toxicity. ...
Yeo Desmond T B - - 2011
To use electromagnetic (EM) simulations to study the effects of body type, landmark position, and radiofrequency (RF) body coil type on peak local specific absorption rate (SAR) in 3T magnetic resonance imaging (MRI). Numerically computed peak local SAR for four human body models (HBMs) in three landmark positions (head, heart, ...
Chatterjee Debashree - - 2011
Cholera toxin (CT) is the major virulence factor of pathogenic Vibrio cholerae. The present study demonstrates that a fraction of CT is associated with the outer membrane vesicles (OMVs) released by V. cholerae. Atomic force microscopy (AFM) and also transmission electron microscopy (TEM) of purified OMVs from toxigenic V. cholerae ...
Flanagan Eoin P - - 2011
Autoimmune encephalopathy represents a complex category of disease with diverse immunologic associations, clinical manifestations, and therapeutic outcomes. Three main subgroups include autoimmune encephalopathies without cancer but with neural nonspecific serologic evidence of autoimmunity (encompassing "Hashimoto's encephalopathy") that is the main focus of this review, paraneoplastic encephalopathies, and central nervous system ...
Pickhardt Perry J - - 2011
The objective of our study was to determine whether colonic distention at CT colonography (CTC) induces small incidental sliding hiatal hernias. This study evaluated for the presence and, if present, the size (small, moderate, or large) of sliding (type 1) hiatal hernias in 3126 consecutive asymptomatic adults (mean age ± ...
Wright Benjamin - - 2011
Encapsulating peritoneal sclerosis (EPS) is an uncommon complication of peritoneal dialysis (PD), with high mortality and morbidity. The peritoneum thickens, dysfunctions, and forms a cocoon that progressively "strangulates" the small intestine, causing malnutrition, ischemia, and infarction. There is as yet no reliable noninvasive means of diagnosis, but recent developments in ...
Toms Andoni P - - 2011
BACKGROUND: The mechanics of small bowel motility are extremely complex. Routine clinical access to small bowel has been restricted to radiological enteric contrast studies which have not contributed significantly to the understanding of small bowel physiology. Small bowel mechanics are understood within a framework of individual visible or measurable elements ...
Wong Chun-Sing - - 2011
Gastrointestinal stromal tumor (GIST) is the most common mesenchymal tumor of the gastrointestinal tract. It can be benign or malignant in behavior. Stomach, being the most common site (70%) for GISTs, is followed by the small intestine (20%). Anorectal, colonic, and esophageal GISTs are uncommon, whereas extraintestinal GISTs are extremely ...
Xiong Ji - - 2011
A 16-year-old male teenager presented with seizure and loss of consciousness for 20 min. Magnetic resonance imaging demonstrated a mass occupying the right medial temporal lobe. Histological examination revealed a non-pigmented area with spindle-shaped and large xanthomatous pleomorphic cells and a pigmented region with pigmented neoplastic cells with fascicular arrangement. Immunohistochemical ...
Chen Guang-Hong - - 2011
The noise variance versus spatial resolution relationship in differential phase contrast (DPC) projection imaging and computed tomography (CT) are derived and compared to conventional absorption-based x-ray projection imaging and CT. The scaling law for DPC-CT is theoretically derived and subsequently validated with phantom results from an experimental Talbot-Lau interferometer system. ...
Laulicht Bryan - - 2011
Numerous therapeutics demonstrate optimal absorption or activity at specific sites in the gastrointestinal (GI) tract. Yet, safe, effective pill retention within a desired region of the GI remains an elusive goal. We report a safe, effective method for localizing magnetic pills. To ensure safety and efficacy, we monitor and regulate ...
Chua Terence C - - 2011
BACKGROUND: This study evaluates the accuracy of computed tomography (CT) scoring of the peritoneal cancer index (PCI) and examines its association with surgical morbidity and outcomes in pseudomyxoma peritonei. METHODS: Forty-seven patients with pseudomyxoma peritonei had preoperative evaluation of CT scans and were treated with cytoreductive surgery and perioperative intraperitoneal ...
Rennert J - - 2011
Aim: To evaluate, whether image fusion of contrast enhanced ultrasound (CEUS) with CT or MRI affects the diagnosis and characterization of liver lesions or the therapeutic strategy of surgical or interventional procedures compared to the preliminary diagnosis. Material and methods: In a retrospective study the image fusion scans of CEUS ...
Garg P K - - 2011
A rare case of intestinal obstruction due to compression of ileocecal junction by mucocele of appendix is presented. Imaging with ultrasound or computed tomography (CT) is useful in establishing preoperative diagnosis. Avoidance of rupture of during appendicectomy is critical in preventing potential complication of pseudomyxoma peritonei.
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