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McAndrew Christopher M CM Washington University in Saint Louis, Department of Orthopaedic - - 2014
The null hypothesis of the current study states that routine axial CT images are obtained at a consistent and reproducible orientation relative to the sacrum. The secondary null hypothesis states that there is no difference in the measurement of the safe zone for placement of iliosacral screws when using routine ...
Milián C - - 2014
This erratum is a compilation of insignificant errors and misprints found in [1].
Nabavizadeh S A SA From the Department of Radiology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania; and Department of Radiology, University of Pennsylvania, Philadelphia, - - 2014
Schizencephaly is a rare malformation of the brain characterized by a gray matter-lined defect extending from the pial surface to the lateral ventricles. The purpose of this study was to correlate imaging findings of schizencephaly and associated anomalies on fetal and postnatal MR imaging and assess possible changes that may ...
Boulouis Grégoire G From the Hemorrhagic Stroke Research Program, Department of Neurology (G.B., A.D., H.B.B., P.F., A. Vashkevich, A.A., K.S., A. Viswanathan, M.E.G., S.M.G.), Division of Neuroradiology, Department of Radiology (J.M.R.), Department of Emergency Medicine (J.N.G.), and Division of Neurocritical Care and Emergency Neurology (J.R.), Massachusetts General Hospital, Harvard Medical School, Boston, MA; Department of Biostatistics, Harvard School of Public Health, Boston, MA (R.A.B.); and Department of Clinical Neurosciences and Hotchkiss Brain Institute, University of Calgary, Alberta, Canada - - 2014
We sought to identify baseline determinants of the anatomic pattern of hematoma expansion in patients with intracerebral hemorrhage and spot sign. We coregistered baseline and follow-up CT scans from 15 intracerebral hemorrhage patients and measured growth at each surface node from baseline to follow-up hematoma. We analyzed the effects of ...
Hong Cheolpyo C Center for Medical Metrology, Korea Research Institute of Standards and Science, Daejeon, Republic of Korea. Electronic address: - - 2014
Open-configuration magnetic resonance imaging (MRI) systems are becoming increasingly desirable for musculoskeletal imaging and image-guided radiotherapy because of their non-claustrophobic configuration. However, geometric image distortion in large fields-of-view (FOV) due to field inhomogeneity and gradient nonlinearity hinders the practical applications of open-type MRI. We demonstrated the use of geometric distortion ...
Newman Beverley B Department of Radiology, Stanford University, Lucile Packard Children's Hospital, 725 Welch Road, MC 5913, Stanford, CA, 94305, USA, - - 2014
We encountered multiple cases in which the US appearance of ruptured appendicitis mimicked intussusception, resulting in diagnostic and therapeutic delay and multiple additional imaging studies. To explore the clinical and imaging discriminatory features between the conditions. Initial US images in six children (age 16 months to 8 years; 4 boys, 2 girls) ...
Cha D I DI Department of Radiology and Center for Imaging Science, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of - - 2014
To investigate the dark choledochal ring sign on T2-weighted imaging (T2WI) as an indicator for pancreatic ductal adenocarcinoma (PDAC) among periampullary carcinomas. Sixty patients with surgically confirmed periampullary cancers [30 PDACs, 15 distal common bile duct (CBD) cancers, 13 ampullary cancers, and two duodenal cancers] who underwent liver magnetic resonance ...
Deren Matthew E ME Department of Orthopedic Surgery, Warren Alpert Medical School of Brown University , Providence, RI, - - 2014
Posterior sternoclavicular dislocations are rare but serious injuries. The proximity of the medial clavicle to the vital structures of the mediastinum warrants caution with management of the injury. Radiographs are the initial imaging test, though computed tomography and magnetic resonance imaging are essential for diagnosis and preoperative planning. This paper ...
van Heerden Jolandi J Department of Radiology, The Royal Melbourne Hospital, The University of Melbourne, Melbourne, Victoria, - - 2014
This pictorial essay highlights the role of the radiologist as a member of the adult epilepsy multidisciplinary team, and gives an overview of MRI-evident epileptogenic lesions.
Ackman Jeanne B JB *Harvard Medical School †Department of Radiology, Division of Thoracic Imaging and Intervention, Massachusetts General Hospital, Boston, - - 2014
There is increasing perception that thoracic magnetic resonance imaging (MRI) is underutilized. Various obstacles to implementation and utilization of thoracic MRI can be overcome with continuous updating, improvement, and standardization of thoracic MRI protocols, close collaboration with MRI technologists, continued education of MRI technologists, radiologists, and referring health care providers, ...
Antonica Filippo F D.I.M.- Diagnostic Imaging - Nuclear Medicine, University of Bari "Aldo Moro", Bari, Italy. - - 2014
In the last decade numerous attempts were considered to co-register and integrate different imaging data. Like PET/CT the integration of PET to MR showed great interest. PET/MR scanners are recently tested on different distrectual or systemic pathologies. Unfortunately PET/MR scanners are expensive and diagnostic protocols are still under studies and ...
Yi Dong - - 2014
The most serious erratic migration of paragonimiasis is a cerebral paragonimiasis. Infection in the temporal and occipital lobes of the brain has been previously reported in cerebral paragonimiasis. Here, we report a case of chronic brainstem paragonimiasis. A 29-year-old Chinese woman presented to our hospital complaining of a sudden onset, ...
Oinam Arun S AS Post Graduate Institute of Medical Education and Research. - - 2014
The purpose of this study is to find the uncertainties in the reconstruction of MR compatible ring-tandem intracavitary applicators of high-dose rate image-based brachytherapy treatment planning using rigid registration of 3D MR and CT image fusion. Tandem and ring reconstruction in MR image based brachytherapy planning was done using rigid ...
Isnaini Ismet I Imaging Science and Engineering Laboratory, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, 226-8503, Japan, - - 2013
The current positron emission tomography (PET) design is aimed toward establishing an entire-body PET scanner. An entire-body PET scanner is a scanner whose axial field of view (FOV) covers the whole body of a patient, whereas whole-body PET scanner can be of any axial FOV length, but was designed for ...
Renne Julius J Diagnostic and Interventional Radiology, Hannover Medical School, Biomedical Research in Endstage and Obstructive Lung Disease Hannover (BREATH), Member of the German Center for Lung Research, Hannover, - - 2013
To evaluate the reproducibility of oxygen-enhanced magnetic resonance imaging (MRI), and the influence of different gas delivery methods, in a clinical environment. Twelve healthy volunteers were examined on two visits with an inversion recovery snapshot fast low angle shot sequence on a 1.5 T system. Coronal slices were obtained breathing ...
Kashiwagi Manabu - - 2013
Histopathological studies have reported that optical coherence tomography (OCT) can accurately detect fibroatheroma that is involved in not only culprit lesion of acute coronary syndrome but also no-reflow phenomenon after percutaneous coronary intervention. Studies have demonstrated superiority of OCT in plaque characterization and interruption of arterial wall component. At current, ...
Tang Jianwei - - 2013
We derive an analytical LC model from Maxwell's equations for the magnetic resonance of subwavelength ring resonators. Using the LC model, we revisit the scaling of split-ring resonators. Inspired by the LC model, we propose a hybrid metal-dielectric ring resonator mainly composed of high index dielectric material (e.g., TiO<sub>2</sub>) with ...
Dey Rajat - - 2013
A CMOS compatible wavelength monitor comprised of two thermally tuned racetrack-ring resonators with defect mediated photodiode structures is experimentally demonstrated in monolithic silicon. Each resonator is independently tuned so as to determine an unknown input wavelength by tuning the resonance peak locations until there is overlap between the two comb ...
Gabbe B J - - 2013
We describe the routine imaging practices of Level 1 trauma centres for patients with severe pelvic ring fractures, and the interobserver reliability of the classification systems of these fractures using plain radiographs and three-dimensional (3D) CT reconstructions. Clinical and imaging data for 187 adult patients (139 men and 48 women, ...
Jha Ashish Kumar AK Department of Nuclear Medicine and Molecular Imaging, Tata Memorial Hospital, Parel, Mumbai, Maharashtra, - - 2013
Artifacts present in computed tomography (CT) image often degrade the image quality and ultimately, the diagnostic outcome. Ring artifact in trans-axial image is caused by either miscalibrated or defective detector element of detector row, which is often categorized as scanner based artifact. A ring artifact detected on trans-axial CT image ...
Baillie Jonathan - - 2013
A new MRI and CT scanning unit at Winchester's Royal Hampshire County Hospital, run by the Hampshire Hospitals NHS Foundation Trust, has been officially opened by the city's MP, Steven Brine, having been completed in February by Brymor Contractors, under advice from TKL Architects, to replace a former imaging facility ...
Tobing Landobasa Y M - - 2013
Metamaterials provide a good platform for biochemical sensing due to its strong field localization at nanoscale. In this work, we show that electric and magnetic resonant modes in split-ring-resonator (SRR) can be efficiently excited under unpolarized light illumination when the SRRs are arranged in fourfold rotationally symmetric lattice configuration. The ...
Alzimami K S - - 2013
Positron emission tomography (PET) using zirconium-89 ((89)Zr) is complicated by its complex decay scheme. In this study, we quantified the effective dose from (89)Zr and compared it with fluorine-18 fludeoxyglucose ((18)F-FDG). Effective dose distribution in a PET/CT facility in Riyadh was calculated by Monte Carlo simulations using MCNPX. The positron ...
Papadopoulou Athina - - 2013
Progenitor cells from the subventricular zone (SVZ) of the lateral ventricles are assumed to contribute to remyelination and resolution of black holes (BHs) in multiple sclerosis (MS). This process may depend on the distance between the lesion and the SVZ. The objective of this paper is to investigate the relationship ...
Wang Kaiyang - - 2013
We theoretically study a single-ring-resonator-based add/drop interferometer to achieve tunable Fano resonance. The Fano resonance results from the interference of two resonant beams propagating in the ring resonator. The line shapes of the Fano resonance are tunable by controlling the coupling coefficients between the waveguide and ring resonator. The spectra ...
Hein Sven M - - 2013
We numerically explore the emission behavior of magnetic dipole emitters located next to resonant plasmonic split-ring resonators (SRRs), which are well known for their large magnetic moment at their fundamental resonance in the near infrared. Our results are compared to the situation for electric dipole emitters, where the SRR can ...
Ewerlin M - - 2013
We investigated magnetic phase transitions, magnetic anisotropy, and magnetic domains in Pd1-xFex alloys with different Fe concentrations x = 2.2-7.2%. The Curie temperature depends linearly on the Fe concentration in the regime studied. The magnetization is dominantly in-plane with a small out-of-plane remanent contribution. Resonant magnetic small angle scattering with circularly polarized ...
Jolepalem Prashant - - 2013
This is a case of a 32-year-old female patient who presented with new onset partial complex seizures. MRI of the brain demonstrated a suspicious ring-enhancing lesion in the right temporal lobe. This finding was felt to be a primary brain malignancy or less likely an infectious process. F-FDG PET of ...
Paparo Francesco - - 2013
We report a case of a primary signet ring cell carcinoma (PSRCC) of the small bowel in a patient with long-standing Crohn's disease, describing computed tomography (CT)-enterography (CTE) and 18F-fluorodeoxyglucose (18F-FDG) positron emission tomography (PET)/CT features of this rare tumor. CTE demonstrated submucosal thickening of a long ileal segment with ...
Wong Yin-Zhi - - 2013
OBJECTIVES:: To observe and improve the interobserver variation of corneal sublayer pachymetry using ConfoScan4 (CS4) z ring. METHODS:: Right corneas of 34 normal subjects were scanned using CS4 (z ring) (Nidek Technologies, Padova, Italy). Corneal sublayer pachymetry was performed by two masked observers based on the written frame selection criteria ...
Maisano Francesco - - 2013
OBJECTIVES: To evaluate the performance and safety of an adjustable semi-rigid annuloplasty ring for mitral regurgitation (MR) in a multicentre study. METHODS: Between March 2010 and December 2011, 30 subjects underwent mitral valve (MV) repair using the Cardinal adjustable annuloplasty ring. This device is a semi-rigid ring allowing postimplantation size ...
Abele Travis A - - 2013
PURPOSE: To evaluate bSSFP (balanced steady state free precession) and half-Fourier RARE (rapid acceleration with relaxation enhancement) MRI sequences in their ability to demonstrate fetal anatomic landmarks, quantify the degree of cerebellar herniation in Chiari II malformations and level and length of the associated open neural tube defects, as well ...
Wang Junqiao - - 2013
Double Fano resonant characteristics are investigated in planar plasmonic structure by embedding a metallic nanorod in symmetric U-shaped split ring resonators, which are caused by a strong interplay between a broad bright mode and narrow dark modes. The bright mode is resulted from the nanorod electric dipole resonance while the ...
Paik Nam Chull - - 2013
Variations of the inferior vena cava (IVC) are clinically silent and most often diagnosed incidentally when imaging for other reasons. However, they may have significant clinical implications during retroperitoneal surgery, venous intervention, or differential imaging diagnosis. This article describes a case of triple IVC, discovered on a lumbar CT and ...
Sankhe Shilpa - - 2013
BackgroundIntracerebral tuberculomas usually manifest as ring-enhancing of nodular lesions on magnetic resonance imaging (MRI). These imaging findings are also observed in other lesions like metastases and toxoplasmosis.PurposeTo study the MRI perfusion characteristics of tuberculomas and its potential role in their definitive diagnosis.Material and MethodsThirty-four tuberculomas were evaluated by conventional and ...
Swami Naveen - - 2013
A 24-year-old woman was referred to pulmonologist with worsening breathlessness and wheeze. During childhood, she was diagnosed with asthma and subsequent exacerbations were treated with bronchodilators for many years. The chest X-ray and a spirometry testing raised a doubt of extrinsic tracheal compression and a subsequent enhanced chest CT (computerized ...
Tamura Manabu - - 2013
Leksell GammaPlan (LGP) software was initially designed for Gamma Knife radiosurgery, but it can be suc-cessfully applied to planning of the open neurosurgical procedures as well. We present our initial experience of delineating the cranial nerves in the vicinity of skull base tumors, combined visualization of the implanted subdural electrodes ...
Teduka Toshiyuki - - 2013
A 50-year-old woman developed a slowly progressive inability to control her motor functions over the past 3 years. For example, she would close the refrigerator door immediately after opening it against her intension, or at intersections she would go in a direction that she did not intend. These symptoms were ...
Schriever Valentin A - - 2012
The anatomy of the human intranasal cavity is complex and anatomical variations are known to affect olfactory functions. Measurement of anatomical variations via delineation of intranasal volume is, however, technically complicated as well as time-consuming. It is well documented that size of various body parts tends to correlate within the ...
Britton Philip N - - 2012
A 7-year-old boy who has recently immigrated from India presented with two episodes of focal seizure over a 3-month period. A cranial magnetic resonance imaging scan showed a ring-enhancing lesion in his cerebral cortex. He was diagnosed with a pyogenic brain abscess following resection of the lesion and also had ...
Chanet Bruno - - 2012
The purpose of this work is to examine the gross visceral anatomy of ocean sunfish and angler using non-invasive imaging techniques: computed tomography imaging (CT) and magnetic resonance imaging (MRI). Similarities and differences in the internal organisation of these two species are verified. Both species lack a swimbladder and present ...
Maselli Giuliano - - 2012
We report an uncommon case of a 45-year-old woman who presented with spontaneous rhinorrhea. A computed tomography (CT) scan of the head revealed an abnormally large sphenoid sinus associated with a parasellar bony defect (Sternberg's canal) through which magnetic resonance imaging could detect an encephalocele of the right temporal lobe. ...
Yamashiro Tsuneo - - 2012
We report a case of ileal internal hernia through the foramen of Winslow into the lesser sac. Preoperative computed tomography (CT) demonstrated that the herniated ileum, which showed a closed-loop obstruction, was located behind the portal vein, and the vein was subsequently compressed and narrowed by the herniated ileum. We ...
Szymanski Catherine C Department of Cardio-Vascular Medicine, Hôpital Européen Georges Pompidou, INSERM U 633, PARCC, 20 Rue Leblanc, 75015 Paris, - - 2012
Undersized ring annuloplasty for ischemic mitral regurgitation (MR) is associated with variable results and >30% MR recurrence. We tested whether subvalvular repair by severing second-order mitral chordae can improve annuloplasty by reducing papillary muscle tethering. Posterolateral myocardial infarction known to produce chronic remodeling and MR was created in 28 sheep. ...
Johnson Derek R - - 2012
Meningiomas are extremely common benign extra-axial brain tumors. When meningiomas present clinically, they typically cause subacute symptoms such as headache. Rarely, meningiomas become acutely symptomatic due to tumor necrosis, which may occur spontaneously or as a result of global hypoperfusion. Here, we describe an elderly man who experienced a rapid ...
Ungur Liviu - - 2012
A toroidal magnetic moment in the absence of conventional total magnetic moment is observed in a {Dy6} ring. The reason for the net toroidal arrangement of the local magnetic moments is the high symmetry of the complex in combination with strong intra-molecular dipolar interactions between Dy ions. The description of ...
Kato Hiroki - - 2012
PURPOSE: To evaluate whether the "black geode" sign is a characteristic magnetic resonance imaging (MRI) finding for extracranial schwannomas. MATERIALS AND METHODS: Forty-three patients with pathologically confirmed extracranial schwannomas underwent preoperative gadolinium-enhanced MRI. The black geode sign was defined as the appearance of enhanced outer and inner rings. MR images ...
Shen Qian - - 2012
The segmentation of brain structures on magnetic resonance imaging scans for calculating regional brain volumes, using automated anatomic labeling, requires the use of both brain atlases and templates (template sets). This study aims to improve the accuracy of volumetric analysis of hippocampus (HP) and amygdala (AMG) in the assessment of ...
Mitra J - - 2012
This paper presents a novel method to identify the 2D axial Magnetic Resonance (MR) slice from a pre-acquired MR prostate volume that closely corresponds to the 2D axial Transrectal Ultrasound (TRUS) slice obtained during prostate biopsy. The method combines both shape and image intensity information. The segmented prostate contours in ...
Wang Y K - - 2012
We numerically investigate the antibonding magnetic resonance in a metamaterial composed of rings and plates, with a particular attention to the influence of broken structural symmetry on the Fano-type transmission spectrum as well as the resonant artificial permeability. From the simulation results, it is obvious that the antibonding magnetic resonance ...
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