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Ha Seunghoon S Department of Radiological Sciences, Tu & Yuen Center for Functional Onco-Imaging, University of California, Irvine, CA, - - 2014
The combined use of a torso-pelvic RF array coil and endorectal RF coil is the current state-of-the-art in prostate MRI. The endorectal coil provides high detection sensitivity to acquire high-spatial resolution images and spectroscopic data, while the torso-pelvic coil provides large coverage to assess pelvic lymph nodes and pelvic bones ...
Kim Cho Rong CR Department of Chemistry, College of Natural Sciences, Kyungpook National University (KNU), Taegu 702-701, South Korea. - - 2014
The dependence of longitudinal (r1) and transverse (r2) water proton relaxivities of ultrasmall gadolinium oxide (Gd2O3) nanoparticles on the surface coating ligand-size was investigated. Both r1 and r2 values decreased with increasing ligand-size. We attributed this to the ligand-size effect. In addition the effectiveness of d-glucuronic acid-coated ultrasmall Gd2O3 nanoparticles ...
Macke S S Quantum Matter Institute, University of British Columbia, 2355 East Mall, Vancouver V6T 1Z4, Canada. Max Planck Institute for Solid State Research, Heisenbergstraße 1, 70569 Stuttgart, - - 2014
Measuring the magnetic configuration at complex buried layers and interfaces is an important task, which requires especially a non-destructive probing technique. X-ray resonant magnetic reflectometry (XRMR) combines the non-destructive depth profiling potential of x-ray reflectometry with the excellent sensitivity for magnetic phenomena, utilizing the x-ray magnetic circular dichroism effect. It ...
Li Zhenghua Z Liaoning Key Lab of Optoelectronic Films & Materials, School of Physics and Materials Engineering, Dalian Nationalities University, Dalian, 116600, China. - - 2014
Near field magnetic force microscopy (NF-MFM) has been demonstrated to locally observe the magnetic fine structures in nanosized recording bits at an operating distance of 1 nm. The nanoscale magnetic domains, the polarity of surface magnetic charges, as well as the 3D magnetic fields leaking from the bits are investigated ...
Wen Zhenchao Z National Institute for Materials Science (NIMS), Tsukuba, 305-0047, - - 2014
A 4-fold-symmetry hexagonal Ru emerging in epitaxial MgO/Ru/Co2 FeAl/MgO heterostructures is reported, in which an approximately Ru(022¯3) growth attributes to the lattice matching between MgO, Ru, and Co2 FeAl. Perpendicular magnetic anisotropy of the Co2 FeAl/MgO interface is substantially enhanced. The magnetic tunnel junctions (MTJs) incorporating this structure give rise ...
Fu Guanglei - - 2014
This paper reported a core-shell nanotheranostic agent by growing Prussian blue (PB) nano-shells of 3-6 nm around superparamagnetic Fe3O4 nano-cores for targeted photothermal therapy of cancer under magnetic resonance imaging (MRI) guidance. Both in vitro and in vivo experiments proved that the Fe3O4@PB core-shell nanoparticles showed significant contrast enhancement for ...
Sharma Vijay Kumar VK UNAM-Institute of Materials Science and Nanotechnology, Department of Electrical and Electronics Engineering, Department of Physics, Bilkent University, Ankara, 06800, - - 2014
In this work, dual-modal (fluorescence and magnetic resonance) imaging capabilities of water-soluble, low-toxicity, monodisperse Mn-doped ZnSe nanocrystals (NCs) with a size (6.5 nm) below the optimum kidney cutoff limit (10 nm) are reported. Synthesizing Mn-doped ZnSe NCs with varying Mn(2+) concentrations, a systematic investigation of the optical properties of these ...
Fan Wenpei W State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, PR - - 2014
To achieve the accurate diagnosis and efficient in situ therapy of malignant tumors is encouraging but still remains a big challenge. The integration of upconversion nanoparticles and mesoporous silica that can combine the diagnostic/therapeutic functions within a single platform, may provide a more advanced way for the efficient theranostics of ...
Kim Ki-Hyun - - 2014
The relative performance of different sorbent materials employed in the cryofocusing (e.g. in cold trap (CT) unit) stage was investigated at sub-ambient temperature by the thermal desorption (TD)-gas chromatography (GC)-pulsed flame photometric detector. To this end, the TD-based calibration of five reduced sulphur compounds (RSC: H2S, CH3SH, CS2, DMS and ...
Pham Mirko M aDepartment of Neuroradiology, Heidelberg University Hospital, Heidelberg bDepartment of Paediatric and Adult Movement Disorders and Neuropsychiatry, Institute of Neurogenetic, University of Lübeck, Lübeck, - - 2014
The purpose of this study is to review advances in magnetic resonance (MR)-neurography and nerve-ultrasound for the precise visualization and localization of nerve lesions not only in nerve trauma or mass lesions, but also in entrapment-related and spontaneously occurring intrinsic neuropathies. These advances may improve the understanding and classification of ...
Poveda-Roda Rafael - - 2014
Objective: To establish the diagnostic validity of panoramic X-rays (PRx) in temporomandibular osteoarthrosis (OA) using the clinical and imaging criteria (magnetic resonance imaging, MRI) of the Research Diagnostic Criteria for Temporomandibular Disorders (RDC/TMD) as gold standards. Methods: Eighty-four patients with full clinical records (RDC/TMD), PRx, and MRI scans were selected. ...
Duan Xinhui X Department of Radiology, Mayo Clinic, Rochester, - - 2014
Nephrosclerosis occurs with aging and is characterized by increased kidney subcapsular surface irregularities at autopsy. Assessments of cortical roughness in vivo could provide an important measure of nephrosclerosis. The purpose of this study was to develop and validate an image-processing algorithm for quantifying renal cortical surface roughness in vivo and determine its ...
Zamprogno Helia H Department of Veterinary Clinical Medicine, Veterinary Teaching Hospital, University of Illinois, Urbana, - - 2014
Analyze the lateral plating surface of the femur to obtain bend and twist angles in dogs with non-chondrodystrophic phenotype. Retrospective CT morphological analysis. Canine hind limb CT scans (n = 30). CT images of 30 normal femurs were uploaded to surgical planning software and 13 points of interest and their respective bend/twist ...
Pearlman Paul C PC *Image Sciences Institute, †Department of Otorhinolaryngology and Head and Neck Surgery, and ‡Brain Center Rudolf Magnus, University Medical Center Utrecht, Utrecht, The - - 2014
A registration procedure of intraoperative three-dimensional rotational x-ray (3DRX) imaging and preoperative computed tomography (CT) imaging so that intraoperative CT quality imaging is available during cochlear implant surgery, providing detailed information concerning electrode position in the cochlea and its relation to surrounding bony structures. Retrospective case series SETTING: Tertiary referral ...
Bhattacharjee Ashis A Department of Physics, Visva-Bharati University, Santiniketan, India, - - 2014
Physical aspects of tobacco samples, used in some commonly available Indian brands of cigarettes, with emphasis on their magnetic characterization before and after they get burnt into ashes, are described. The present work highlights the ultrafine nature of the cigarette ashes and provides a compositional insight of their constituent particulate ...
Passeri Daniele D Department of Basic and Applied Sciences for Engineering; University of Rome Sapienza; Rome, - - 2014
Magnetic force microscopy (MFM) is an atomic force microscopy (AFM) based technique in which an AFM tip with a magnetic coating is used to probe local magnetic fields with the typical AFM spatial resolution, thus allowing one to acquire images reflecting the local magnetic properties of the samples at the ...
Zhang Dan D State Key Laboratory of Medicinal Chemical Biology, Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), and Research Center for Analytical Sciences, College of Chemistry, Nankai University, Tianjin, 300071, China. - - 2014
Mesoporous silica nanoparticles (MSNs) were co-doped with Gd(3+) and Al(3+) and then loaded with Ru(bpy)3(2+) by ion-exchange to prepare Ru/Gd-Al@MSNs. The as-prepared Ru/Gd-Al@MSNs were applied as contrast agents for in vivo fluorescence and magnetic resonance (MR) dual-modality imaging with a mouse as a model. The effects of Al(3+) and MSNs ...
Sugimoto Ai A Division of Thoracic and Cardiovascular Surgery, Niigata University Medical and Dental Hospital, 1-757 Asahimachi-dori, Niigata, 9518510, Japan, - - 2014
A 15-day-old boy after intracardiac repair was discharged from the intensive care unit with a low-flow nasal cannula for oxygen administration. The cannula was a 4-Fr multi-purpose tube with a side hole that was inserted into his left nostril. Next day, he suddenly developed pneumocephalus emerging from the right periorbital ...
Gong Maogang M Department of Chemistry, University of Kansas, Lawrence, KS, 66045, - - 2014
Schematic AuCu/FeCo core-shell magnetic nanoparticles: FeCo shell is precisely synthesized on non-magnetic AuCu core to form the core/shell nanostructures. Due to the non-magnetic AuCu core, the FeCo shell exhibits a transition from single domain to magnetic vortex state.
Abramson Sébastien - - 2014
Magnetic cobalt ferrite/silica microparticles having both an original morphology and an anisotropic nanostructure are synthesized through the use of an external magnetic field and nanoparticles characterized by a high magnetic anisotropy. The association of these two factors implies that the ESE (Emulsion and Solvent Evaporation) sol-gel method employed here allows ...
Lunca Popa Petru P Département Science et Analyse des Matériaux, Centre de Recherche Public Gabriel Lippmann, L-4422 Belvaux, - - 2014
In the field of spintronics, the archetype solid-state two-terminal device is the spin valve, where the resistance is controlled by the magnetization configuration. We show here how this concept of spin-dependent switch can be extended to magnetic electrodes in solution, by magnetic control of their chemical environment. Appropriate nanoscale design ...
Beau Aurélien A *Faculty of Odontology, Lyon, - - 2014
Summary BACKGROUND/OBJECTIVES: Orthodontic appliances are often removed before magnetic resonance imaging (MRI) scans because they are known to produce artefacts. The purpose of this study was to find the exact indications for removal of various fixed attachments when imaging four specific areas of the head and neck. Sixty patients requiring ...
Kothary Shefali S Department of Radiology, Mount Sinai Beth Israel, First Avenue at 16th Street, New York, NY, 10003, USA, - - 2014
To assess the MRI appearance of normal skeletal development of the glenoid and glenoid-coracoid interface in the pediatric population. To the best of our knowledge, this has not yet been studied in detail in the literature. An IRB-approved, HIPAA-compliant retrospective review of 105 consecutive shoulder MRI studies in children, ages ...
Urries Inmaculada I Department of Chemical Engineering, Aragon Institute of Nanoscience (INA), University of Zaragoza, Campus Río Ebro-Edificio I+D, C/Poeta Mariano Esquillor S/N, 50018-Zaragoza, Spain. victorse@unizar.es - - 2014
PEGylated magneto-plasmonic nanoparticles with a hollow or semi-hollow interior have been successfully synthesized and their physico-chemical characteristics have been investigated. The hollow interior space can be used to store drugs or other molecules of interest whereas magnetic characterization shows their potential as contrast agents in magnetic resonance imaging (MRI) applications. ...
Mangold Stefanie S From the Departments of *Diagnostic and Interventional Radiology, and †Traumatology, Eberhard Karls University Tuebingen, Tuebingen; and ‡Computed Tomography, Siemens Healthcare, Forchheim, - - 2014
The objective of this study was to retrospectively determine the potential of virtual monoenergetic (ME) reconstructions for a reduction of metal artifacts using a new-generation single-source computed tomographic (CT) scanner. The ethics committee of our institution approved this retrospective study with a waiver of the need for informed consent. A ...
Coquia Stephanie F SF From the *Department of Radiology, †Division of Biostatistics and Bioinformatics, Sidney Kimmel Cancer Center, and ‡Department of Pathology, the Sol Goldman Pancreatic Center Research Center, Johns Hopkins Hospital, Baltimore, - - 2014
The aim of this study was to evaluate the ability of computed tomography (CT) in differentiating between intrapancreatic accessory spleen (IPAS) from pancreatic neuroendocrine tumor (PanNET). Eight IPASs and 12 PanNETs in the pancreatic tail were retrospectively evaluated by 2 radiologists. Readers assigned a diagnosis to each examination and evaluated ...
Kovtunov Kirill V KV Laboratory of Magnetic Resonance Microimaging, International Tomography Center, SB RAS, 3A Institutskaya St., Novosibirsk 630090 (Russia) and Novosibirsk State University, 2 Pirogova St., Novosibirsk 630090 (Russia). - - 2014
Several supported metal catalysts were synthesized, characterized, and tested in heterogeneous hydrogenation of propene with parahydrogen to maximize nuclear spin hyperpolarization of propane gas using parahydrogen induced polarization (PHIP). The Rh/TiO2 catalyst with a metal particle size of 1.6 nm was found to be the most active and effective in the ...
Lainiala Olli O Coxa Hospital for Joint Replacement , Tampere , Finland - - 2014
Background and purpose - Magnetic resonance imaging (MRI) is important for detecting extracapsular pseudotumors, but there is little information on the accuracy of MRI and appropriate intervals for repeated imaging. We evaluated the sensitivity and specificity of MRI for detecting pseudotumors in 155 patients (167 hips) with metal-on-metal (MoM) hip ...
Tetienne J-P JP Laboratoire Aimé Cotton, CNRS, Université Paris-Sud and ENS Cachan, UPR CNRS 3321, 91405 Orsay, France. Laboratoire de Photonique Quantique et Moléculaire, ENS Cachan and CNRS, UMR CNRS 8537, 94235 Cachan, - - 2014
The control of domain walls in magnetic wires underpins an emerging class of spintronic devices. Propagation of these walls in imperfect media requires defects that pin them to be characterized on the nanoscale. Using a magnetic microscope based on a single nitrogen-vacancy (NV) center in diamond, we report domain-wall imaging ...
Hogan R Edward RE Department of Neurology, Washington University School of Medicine, St. Louis, - - 2014
To demonstrate the accuracy across different acquisition and analysis methods, we evaluated the variability in hippocampal volumetric and surface displacement measurements resulting from two different MRI (magnetic resonance imaging) acquisition protocols. Nine epilepsy patients underwent two independent T1-weighted magnetization prepared spoiled gradient sequences during a single 3T MRI session. Using ...
Kuusela Linda L HUS Medical Imaging Center, Helsinki University Central Hospital, Finland Department of Physics, University of Helsinki, Helsinki, Finland - - 2014
In simultaneous electroencephalography (EEG) and functional magnetic resonance imaging (fMRI), safety of the EEG equipment is ensured by the manufacturer only for localizers and fMRI sequences. To conduct a clinically feasible simultaneous EEG-fMRI study, other sequences, e.g. anatomical and B0-correction sequences, have to be acquired in the same imaging session. ...
Sahoo Banalata B Department of Chemistry, Indian Institute of Technology Kharagpur, West Bengal 721302, - - 2014
Multifunctional mesoporous silica-coated superparamagnetic manganese ferrite (MnFe2O4) nanoparticles (M-MSN) were synthesized and evaluated for targeted drug delivery and magnetic resonance imaging (MRI) applications. MnFe2O4 nanoparticles were prepared by solvothermal route and were silica-coated by surface silylation using sol-gel reactions. Subsequently, silylation was done using (3-aminopropyl)triethoxysilane in presence of a surfactant ...
Liebl Hans H Department of Radiology and Biomedical Imaging, University of California, San Francisco, California, USA; Institut fuer diagnostische und interventionelle Radiologie, Technische Universitaet Muenchen, Munich, - - 2014
To assess lesion detection and artifact size reduction of a multiacquisition variable-resonance image combination, slice encoding for metal artifact correction (MAVRIC-SEMAC) hybrid sequence (MAVRIC-SL) compared to standard sequences at 1.5T and 3T in porcine knee specimens with metal hardware. Artificial cartilage and bone lesions of defined size were created in ...
Miao B F BF Department of Physics and Astronomy, Johns Hopkins University, Baltimore, Maryland 21218, USA and National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, People's Republic of - - 2014
A new type of magnetoresistance (MR) observed in Pt/YIG when nominally nonmagnetic Pt comes in contact with a ferrimagnetic insulator yttrium iron garnet (YIG) has drawn intense experimental and theoretical interest. In this Letter, we experimentally demonstrate two physical origins of the new MR: a spin current across the Pt/YIG ...
Tang Shu-Hua SH State Key Laboratory of Medicinal Chemical Biology (Nankai University), Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), and Research Center for Analytical Sciences, College of Chemistry, Nankai University, 94 Weijin Road, Tianjin 300071, China. - - 2014
The synthesis of multifunctional monodisperse upconversion nanoparticles (UCNPs) of high quality is highly desired for bioimaging. Lanthanide-oleate complexes are excellent precursors for the synthesis of high quality UCNPs with controllable size and shape. In this work, lanthanide-oleate complexes were prepared by an ultrasonic assisted procedure, and used as precursors for ...
Tschulik Kristina K Department of Chemistry, Physical & Theoretical Chemistry Laboratory, Oxford University, South Parks Road, Oxford, OX1 3QZ, UK. tschulik.kristina@gmail.com - - 2014
Superparamagnetic nanoparticles (NPs) are used in a variety of magnetic field-assisted chemical and medical applications, yet little of their fate during magnetic field interrogation is known. Here, fundamental and new insights in this are gained by cathodic particle coulometry. This methodology is used to study individual Fe3O4 NPs in the ...
Wang Wei W Radiology, Brigham and Women's Hospital, Boston, Massachusetts, USA; Radiation Oncology, Brigham and Women's Hospital, Boston, Massachusetts, - - 2014
To develop an active MR-tracking system to guide placement of metallic devices for radiation therapy. An actively tracked metallic stylet for brachytherapy was constructed by adding printed-circuit micro-coils to a commercial stylet. The coil design was optimized by electromagnetic simulation, and has a radio-frequency lobe pattern extending ∼5 mm beyond ...
Uhlig Tino T Institut für Angewandte Photophysik, Technische Universität Dresden, George-Bähr-Straße 1, D-01069 Dresden, - - 2014
We present an easy, fast and reliable method for the preparation of magnetic force microscopy (MFM) probes based on single Co nanoparticles (NPs). Due to their dipolar character, these magnetic probes open up a new approach for quantitative and non-invasive MFM measurements on the nanometer length scale. To guarantee long-term ...
Sanz J M - - 2014
The influence of the degree of purity of a silicon nanoparticle on its resonances, either electric or magnetic, is assessed by using Mie theory as well as finite-element simulations. In particular, it is shown that the main effect of the increase of absorption due to the pollutants is observed in ...
Radzi Shairah S 1 Institute of Health and Biomedical Innovation, Queensland University of Technology, QLD 4059, Australia ; 2 Centre of Advanced Imaging, University of Queensland, QLD 4072, Australia ; 3 Orthopaedics Department, Royal Brisbane and Women's Hospital, QLD 4006, Australia ; 4 Radiology Department, 5 Trauma Services, Princess Alexandra Hospital, QLD 4102, - - 2014
Radiographs are commonly used to assess articular reduction of the distal tibia (pilon) fractures postoperatively, but may reveal malreductions inaccurately. While magnetic resonance imaging (MRI) and computed tomography (CT) are potential three-dimensional (3D) alternatives they generate metal-related artifacts. This study aims to quantify the artifact size from orthopaedic screws using ...
Morimoto Shota S Department of Orthopedic Surgery, Hyogo College of Medicine, Nishinomiya, Hyogo 663-8501, - - 2014
Periosteal chondrosarcoma is an extremely rare low-grade malignant cartilaginous tumor arising from the external bone surface. Diagnosis of periosteal chondrosarcomas may be challenging, since this condition closely resembles periosteal chondromas. It has been reported that positron emission tomography (PET) is useful in distinguishing benign from malignant cartilaginous tumors using a ...
Butler Kimberly S KS Department of Pathology, University of New Mexico Health Sciences Center, 1 University of New Mexico, Albuquerque, NM 87131, - - 2014
As new magnetic nanoparticle-based technologies are developed and new target cells are identified, there is a critical need to understand the features important for magnetic isolation of specific cells in fluids, an increasingly important tool in disease research and diagnosis. To investigate magnetic cell collection, cell-sized spherical microparticles, coated with ...
Lim Eun-Kyung EK Department of Radiology, College of Medicine, Yonsei University, Seoul 120-752, Korea. YUHS-KRIBB Medical Convergence Research Institute, Seoul 120-752, Korea. BioNanotechnology Research Center, Korea Research Institute of Bioscience and Biotechnology, 305-806, Daejeon, - - 2014
We developed Pyrene-Gadolinium (Py-Gd) nanoparticles as pH-sensitive magnetic resonance imaging (MRI) contrast agents capable of showing a high-Mr signal in cancer-specific environments, such as acidic conditions. Py-Gd nanoparticles were prepared by coating Py-Gd, which is a complex of gadolinium with pyrenyl molecules, with pyrenyl polyethyleneglycol PEG using a nano-emulsion method. ...
D'Andrea Giancarlo G 1Neurosurgery, Department of NESMOS, Faculty of Medicine and Psychology, University of Rome "La Sapienza" 2Department of Neurology, Unit of Neurophysiopathology, Papa Giovanni XXIII Hospital, Bergamo 3Neurosurgery, IRCCS Neuromed Pozzilli (Is), University of Rome "La - - 2014
Neurosurgery aims to achieve maximal tumor resection while preserving neurological function. Tools such as neuronavigation, high-field intraoperative magnetic resonance imaging (iMRI), and intraoperative neurophysiological monitoring (IOM) have consistently helped to achieve this goal, but integration has often been difficult. Surgery of eloquent areas requires intraoperative neurophysiological monitoring (IOM), which in ...
Streubel Robert - - 2014
Increasing performance and enabling novel functionalities of microelectronic devices, such as three-dimensional on-chip architectures in optics, electronics and magnetics, calls for new approaches in both fabrication and characterization. Up to now, 3D magnetic architectures had mainly been studied by integral means without providing insight into local magnetic microstructures that determine ...
MacDonald Thomas D TD Ontario Cancer Institute and Techna Institute, UHN (Canada); Department of Pharmaceutical Sciences, University of Toronto - - 2014
Photothermal therapy makes use of photothermal sensitizers and laser light to thermally ablate diseased tissues. Porphysome nanoparticles offer a nontoxic alternative to inorganic nanocrystals for the efficient conversion of light into heat. Mn(3+) ions were incorporated directly into the building blocks of our porphysome nanoparticles, thus imparting MRI sensitivity while ...
Waldstein Wenzel W Adult Reconstruction and Joint Replacement Division, Hospital for Special Surgery, Weill Medical College of Cornell University, 535 East 70th Street, New York, NY, 10021, USA, - - 2014
Osteolysis has not been recognized as a common failure mode of the Birmingham modular metal-on-metal (MoM) total hip arthroplasty (THA). The clinical value of metal artifact reduction sequence (MARS) magnetic resonance imaging (MRI) to assess the periprosthetic soft tissue is well documented; however, the appropriate image modalities to detect periacetabular ...
Paul Gabriella G Institut de Chimie Moléculaire et des Matériaux d'Orsay, CNRS, Université Paris 11, 91405 Orsay, France. - - 2014
Large longitudinal relaxivities were observed in Mn(II)-containing Prussian blue analogue nanoparticles. At low concentrations and high field (7 T), a remarkable positive contrast enhancement was seen which exceeded that of clinical contrast agents and was attributed to the very large proportion of surface atoms of these coordination nanoparticles.
Liang Xing-Jie - - 2014
In the past decade, enormous species of nanomaterials have been developed for biomedical application, especially cancer therapy. Realizing visualized therapy is highly promising now because of the potential accurate, localized treatment. In this work, we firstly synthesized metal nanorattles (MNRs), which utilized porous gold shells to carry multiple MR imaging ...
Ballhausen Hendrik - - 2014
Metal implants, surgical clips and other foreign bodies may cause 'streaking' or 'star' artifacts in computed tomography (CT) reconstructions, for example in the vicinity of dental restorations or hip implants. The deteriorated image quality complicates contouring and has an adverse effect on quantitative planning in external beam therapy. The potential ...
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