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Eitel Charlotte C Department of Electrophysiology, University of Leipzig, Heart Center, Struempellstrasse 39, 04289, Leipzig, Germany, - - 2014
Real-time magnetic resonance imaging (MRI) combines the advantages of excellent soft-tissue characterization in a true 3D anatomical and functional model with the possibility of lesion and gap visualization without the need of any radiation. Therefore, real-time MRI presents a particularly attractive imaging technology to guide electrophysiology studies and catheter ablation ...
Leigh Richard R aDepartments of Neurology and Radiology bDepartment of Neurology and Neuroscience, Johns Hopkins University, Baltimore, Maryland, - - 2014
To summarize what is known about the use of MRI in acute stroke treatment (predominantly thrombolysis), to examine the assumptions and theories behind the interpretation of magnetic resonance images of acute ischemic stroke and how they are used to select patients for therapies, and to suggest directions for future research. ...
Shepherd Timothy M - - 2014
Essential tremor can be treated by thalamic stimulation or ablation of the ventral intermediate nucleus (VIM) with good outcomes [1]. Routine magnetic resonance imaging (MRI) cannot distinguish between thalamic nuclei so targeting is based on anatomic atlas-based coordinates. Diffusion MRI-based track density imaging (TDI) can better depict internal thalamic structure ...
Evertsson Maria - - 2014
Detection and removal of sentinel lymph nodes (SLN) is important in the diagnosis and treatment of cancer. The SLN is the first regional lymph node draining the primary tumor, and if the cancer has spread, it is most likely to find metastases in the SLN. In this study, we have ...
Inokuchi Go G Departments of Legal Medicine, Graduate School of Medicine, Chiba University, 1-8-1 Inohana, Chuo-ku, Chiba, 260-8670, Japan, - - 2014
One of the advantages of postmortem imaging is its ability to obtain diagnostic findings in a non-destructive manner when autopsy is either difficult or may destroy forensic evidence. In recent years, efforts have been made to incorporate computed tomography (CT) based postmortem angiography into forensic pathology; however, it is not ...
Hara Tetsuya T Massachusetts General Hospital, Harvard Medical School, Boston, - - 2014
-Accurate detection of recurrent same-site deep vein thrombosis (DVT) is a challenging clinical problem. As DVT formation and resolution are associated with a preponderance of inflammatory cells, we investigated whether noninvasive (18)F-fluorodeoxyglucose (FDG)-PET imaging could identify inflamed, recently formed thrombi and thereby improve the diagnosis of recurrent DVT. -We established ...
Xie Luke L Center for In Vivo Microscopy, Department of Radiology, Duke University Medical Center, Durham, NC, USA; Department of Biomedical Engineering, Duke University, Durham, NC, - - 2014
The major roles of filtration, metabolism and high blood flow make the kidney highly vulnerable to drug-induced toxicity and other renal injuries. A method to follow kidney function is essential for the early screening of toxicity and malformations. In this study, we acquired high spatiotemporal resolution (four dimensional) datasets of ...
Thomas M S MS Radiology Department, Norfolk & Norwich University Hospitals NHS Foundation Trust, Norwich, UK. Electronic address: - - 2014
Obtaining optimal images of small joints using magnetic resonance imaging (MRI) can be technically challenging. The aim of this review is to outline the practical aspects of MRI of small joints, with reference to the underlying physical principles. Although the most important contribution to successful imaging of small joints comes ...
Kao Yu-Chieh Jill YC Department of Neurology, University of North Carolina, Chapel Hill, NC, USA; Biomedical Research Imaging Center, University of North Carolina, Chapel Hill, NC, - - 2014
Cortical spreading depolarization (CSD) is known to exacerbate ischemic damage, as the number of CSDs correlates with the final infarct volumes and suppressing CSDs improves functional outcomes. To investigate the role of CSD in ischemic damage, we developed a novel rat model of photothrombotic ischemia using a miniature implantable optic ...
Park Sung Bin SB Department of Radiology, Chung-Ang University Hospital, Chung-Ang University College of Medicine, Seoul, - - 2014
To investigate the optimal imaging delay time of dynamic contrast-enhanced magnetic resonance (MR) imaging in women with endometrial cancer. This prospective single-institution study was approved by the institutional review board, and informed consent was obtained from the participants. Thirty-five women (mean age, 54 years; age range, 29-66 years) underwent dynamic contrast-enhanced ...
Meyers Robert W RW Cardiff School of Sport, Cardiff Metropolitan University, Cardiff, - - 2014
The purpose of this study was to examine the natural development of the mechanical features of sprint performance in relation to maturation within a large cohort of boys. Three hundred and thirty-six boys (11-15 years) were analysed for sprint performance and maturation. Maximal speed, stride length (SL), stride frequency (SF), ...
Lovesey S W SW ISIS Facility, STFC, Didcot, Oxfordshire OX11 0QX, UK. Diamond Light Source Ltd, Didcot, Oxfordshire OX11 0DE, - - 2014
A theoretical investigation of a plausible construct for electronic structure in iridate perovskites demonstrates the existence of magnetic multipoles hitherto not identified. The strange multipoles, which are parity-even, time-odd and even rank tensors, are absent from the so-called jeff = 1/2 model. We prove that the strange multipoles contribute to ...
Xiao Bo B Shanghai Children's Hospital, Shanghai Jiaotong University, Neurosurgery, Shanghai, China ; - - 2014
Our aim of this study was to quantitatively develop an early EDH natural evolutionary curve, and to assess association of the most common radiological signs of initially nonsurgical supratentorial EDHs on early CT, added with their CT time for EDH enlargement. We retrospectively reviewed pertinent data of supratentorial EDH cases ...
Golshan Mehra M Department of Surgery, Brigham and Women's Hospital and Dana-Farber Cancer Institute, Boston, MA, USA, - - 2014
The rate of reexcision in breast-conserving surgery remains high, leading to delay in initiation of adjuvant therapy, increased cost, increased complications, and negative psychological impact to the patient.1 (-) 3 We initiated a phase 1 clinical trial to determine the feasibility of the use of intraoperative magnetic resonance imaging (MRI) ...
Wille Mathilde Marie Winkler MM Department of Respiratory Medicine, Gentofte Hospital, Niels Andersensvej 65, opg. 30A, st.th., 2900, Hellerup, Denmark, - - 2014
To evaluate interobserver agreement and time-trend in chest CT assessment of emphysema, airways, and interstitial abnormalities in a lung cancer screening cohort. Visual assessment of baseline and fifth-year examination of 1990 participants was performed independently by two observers. Results were standardised by means of an electronic score sheet; kappa and ...
Burgos Ninon - - 2014
Attenuation correction is an essential requirement for quantification of Positron Emission Tomography (PET) data. In PET/CT acquisition systems, attenuation maps are derived from Computed Tomography (CT) images. However, in hybrid PET/MR scanners, Magnetic Resonance Imaging (MRI) images do not directly provide a patient-specific attenuation map. The aim of the proposed ...
Ooi Yasuhiro Y Division of Pathogenesis and Control of Oral Disease, Graduate School of Dentistry, Osaka University, Suita, Osaka 565-0871, Japan; CREST, Japan Science and Technology Agency (JST), Saitama 332-0012, Japan. Electronic address: - - 2014
Using 11.7 T ultra high-field T2-weighted MRI, the present study aimed to investigate pathological changes of primary and secondary trigeminal pathways following neonatal transection of infraorbital nerve in rats. The trigeminal pathways consist of spinal trigeminal tract, trigeminal sensory nuclear complex, medial lemniscus, ventromedial portion of external medullary lamina and ...
Brunner John J From the Department of Radiology, Emergency Radiology Section (J.B., T.C.R., A.A.C., A.S.), Department of Emergency Medicine (E.G., A.S.R.), and Department of Surgery, Division of Trauma, Burn, and Surgical Critical Care (J.M.H.), Brigham and Women's Hospital, Harvard Medical School, 75 Francis St, Boston, MA - - 2014
Purpose To analyze imaging utilization and emergency radiology process turnaround times in response to the April 15, 2013, Boston Marathon bombing in order to identify opportunities for improvement in the Brigham and Women's Hospital (BWH) emergency operations plan. Materials and Methods Institutional review board approval was obtained with waivers of ...
Alani Anas A Department of Medicine, Los Angeles Biomedical Research Institute at Harbor, UCLA Medical Center, Torrance, California, - - 2014
Cardiac computed tomography (CT) has evolved at a rapid pace over the last few years. The improved spatial and temporal resolution allows collection of valuable information about the coronary arteries and atherosclerosis not obtainable by other noninvasive modalities. Coronary artery calcium acquisition is more straightforward, and large datasets are available ...
Hutchinson Michael M New York Core Neuroscience, 222 East 31st Street, New York, NY, 10016, - - 2014
Real-time MR imaging might exert a profound influence on neuroscience in the future by enabling the direct visualization of neuronal interactions. At this time, however, all practical embodiments of MRI require at least some degree of gradient encoding, and this in turn sets a lower limit of about 100 ms ...
Weavers Paul T PT Department of Radiology, MR Research Laboratory, Mayo Clinic, Rochester, Minnesota, - - 2014
To develop and validate a method for choosing the optimal two-dimensional CAIPIRINHA kernel for subtraction contrast-enhanced MR angiography (CE-MRA) and estimate the degree of image quality improvement versus that of some reference acceleration parameter set at R ≥ 8. A metric based on patient-specific coil calibration information was defined for evaluating optimality ...
Shen Guohua G Department of Nuclear Medicine, West China Hospital of Sichuan University, Chengdu, People's Republic of - - 2014
In recent years, dual-time-point (DTP) fluorine-18 fluorodeoxyglucose PET/computed tomography (CT) has emerged as a new method for evaluating metastatic lymph nodes in cancer patients. We performed this meta-analysis to evaluate the performance of DTP PET/CT compared with single-time-point (STP) imaging for differential diagnosis of lymph nodes metastases. On the basis ...
Bharucha Adil E AE College of Medicine, Mayo Clinic, Rochester, MN, USA - - 2014
Gastric emptying, accommodation and motility can be quantified with magnetic resonance imaging (MRI). The first step in image analysis entails segmenting the stomach from surrounding structures, usually by a time-consuming, manual process. We have developed a semi-automated process to segment and measure gastric volumes with MRI. Gastric images were acquired ...
McGivney Debra - - 2014
Magnetic resonance fingerprinting is a technique for acquiring and processing MR data that simultaneously provides quantitative maps of different tissue parameters through a pattern recognition algorithm. A predefined dictionary models the possible signal evolutions simulated using the Bloch equations with different combinations of various MR parameters and pattern recognition is ...
Conson Manuel M Department of Advanced Biomedical Sciences, Federico II University School of Medicine, Naples, Italy; Institute of Biostructure and Bioimaging, National Research Council (CNR), Naples, - - 2014
To implement and evaluate a magnetic resonance imaging atlas-based automated segmentation (MRI-ABAS) procedure for cortical and sub-cortical grey matter areas definition, suitable for dose-distribution analyses in brain tumor patients undergoing radiotherapy (RT). 3T-MRI scans performed before RT in ten brain tumor patients were used. The MRI-ABAS procedure consists of grey ...
Kawai Tatsuya T Department of Radiology, Nagoya City University Graduate School of Medical Sciences. Electronic address: - - 2014
To assess the feasibility of time-resolved magnetic resonance (MR) angiography as a follow-up method after embolization for pulmonary arteriovenous malformations (PAVMs). Evaluation of 28 PAVMs in 10 patients previously treated with embolization with platinum coils was performed. The mean observation period after embolization was 49 months. All patients underwent unenhanced ...
Alavi Abass A Department of Radiology, Hospital of the University of Pennsylvania, Philadelphia, PA 19104, USA. - - 2014
Abass Alavi is a world renowned physician-scientist and has made substantial contributions to development and translation of modern imaging techniques to the day-to-day practice of medicine. Among his accomplishments, the introduction of fluorine-18-fluorodeoxyglucose ((18)F-FDG )-positron emission tomography (PET) has truly revolutionized the field of medicine worldwide. The impact of using ...
Krivoshapkin Alexey L AL Meshalkin Novosibirsk State Research Institute of Circulation Pathology, Novosibirsk, Russia; Novosibirsk State Medical University, Russian Academy of Sciences Siberian Branch, Novosibirsk, Russia. Electronic address: - - 2014
To report the analysis of three cases of ancient trepanation discovered in the craniological collection (153skulls) of the Pazyryk nomadic culture (500 - 300 BC) from the Gorny Altai, Russia and to evaluate the technique, instrumentation and materials used for cranial surgery as well as the motivation for the trepanations ...
Rayssiguier Romy R Service de gynécologie et d'obstétrique, CHU Arnaud de Villeneuve, - - 2014
To describe and assess prenatal imaging findings, fetal and postnatal outcomes of thrombosis of torcular Herophili, and to determine diagnostic features, pathophysiology, prognosis and optimal management. Over a decade, we compiled the largest single-center retrospective study of outcomes. Fetal magnetic resonance imaging (MRI) was used to confirm the sonographic suspicion ...
Salvay David M DM Department of Ophthalmology and Visual Sciences (DMS, JBH, MOG, GPVS), Washington University, Saint Louis, Missouri; Department of Ophthalmology and Visual Sciences (LVP), Washington University, Saint Louis, Missouri; Department of Radiology (RV, AS), Mallinckrodt Institute of Radiology, Washington University School, Saint Louis, Missouri; and Department of Neurology (GPVS), Washington University, Saint Louis, - - 2014
To explore the relationship between diffusion-weighted magnetic resonance imaging (DWI) hyperintensity of the optic nerve head (ONH) and papilledema grade in patients with idiopathic intracranial hypertension (IIH). A retrospective chart review was conducted of patients with definitively diagnosed IIH by clinical examination and visual field (VF) analysis who underwent orbital ...
Kruger Stanley J SJ Department of Medical Physics, University of Wisconsin-Madison, WI, - - 2014
The purpose of this work was to use 3D radial ultrashort echo time (UTE) MRI to perform whole-lung oxygen-enhanced (OE) imaging in humans. Eight healthy human subjects underwent two 3D radial UTE MRI acquisitions (TE = 0.08 ms): one while breathing 21% O2 and the other while breathing 100% O2 . Scans were ...
Maffione A M AM Department of Nuclear Medicine, PET Unit, Nuclear Medicine & PET/CT Centre, Santa Maria della Misericordia Hospital, Viale Tre Martiri, 140, 45100 Rovigo, Italy. Electronic address: - - 2014
To assess the predictive value of fluorine-18-fluorodeoxyglucose ((18)F-FDG) positron emission tomography/computed tomography (PET/CT) in early assessing response during neo-adjuvant chemoradiotherapy (CRT) in patients with locally advanced rectal cancer. A systematic review was performed by search of MEDLINE Library for the following terms: "rectal carcinoma OR rectal cancer", "predictive OR prediction ...
Onxley Jennifer D JD Department of Radiation Oncology, Duke University Medical Center, Durham, North - - 2014
To generate a population-averaged arterial input function (PA-AIF) for quantitative analysis of dynamic contrast-enhanced MRI data in head and neck cancer patients. Twenty patients underwent dynamic contrast-enhanced MRI during concurrent chemoradiation therapy. Imaging consisted of 2 baseline scans 1 week apart (B1/B2) and 1 scan after 1 week of chemoradiation therapy (Wk1). ...
Keall Paul J PJ Radiation Physics Laboratory, Sydney Medical School, The University of Sydney, New South Wales, Australia; Ingham Institute for Applied Medical Research, University of New South Wales, Liverpool, New South Wales, Australia. Electronic address: - - 2014
The Australian magnetic resonance imaging (MRI)-Linac program is a $16-million government-funded project to advance the science and clinical practice of exquisite real-time anatomical and physiological adaptive cancer therapy. The centerpiece of the program is a specifically designed 1-T open-bore MRI/6-MV linac system that is planned for delivery and completion of ...
Raman Siva P SP 1 Both authors: Department of Radiology, Johns Hopkins University, 601 N Caroline St, JHOC 3251, Baltimore, MD - - 2014
OBJECTIVE. The distal common bile duct (CBD) and ampulla are extremely difficult sites to evaluate on CT. This article seeks to provide the reader with a framework and algorithmic approach to the evaluation of abnormalities involving the distal CBD and ampulla, including an emphasis on the use of multiplanar reformations ...
Mittra Erik S ES From the Department of Radiology, Division of Nuclear Medicine, Stanford Hospital and Clinics, 300 Pasteur Dr, Room H2200, Stanford, CA - - 2014
History A 15-year-old girl presented with a 2-month history of 30-lb (13.6 kg) weight loss, chest and abdominal pain, nausea, bilious emesis, cough, and shortness of breath. Initial blood count (performed at an outside hospital) showed elevated white blood cell and platelet counts but low hemoglobin and hematocrit levels. On ...
Martinez-Granados B - - 2014
INTRODUCTION. Previous studies have suggested morphometric and functional abnormalities in the inferior colliculus in patients with schizophrenia. Auditory hallucinations are one of the central symptoms in schizophrenia. In this complex and multidimensional event both attention and emotion are thought to play a key role. AIM. To study metabolic changes in ...
Antila Kari K VTT Technical Research Centre of Finland, Tampere, FI-33200 Tampere, - - 2014
Up to 25% of women suffer from uterine fibroids (UF) that cause infertility, pain, and discomfort. MR-guided high intensity focused ultrasound (MR-HIFU) is an emerging technique for noninvasive, computer-guided thermal ablation of UFs. The volume of induced necrosis is a predictor of the success of the treatment. However, accurate volume ...
Raoult Hélène H From the CHU Rennes, Department of Neuroradiology, Rennes, France (H.R., J.-C.F., J.-Y.G.); Unité VISAGES U746 INSERM-INRIA, IRISA UMR CNRS 6074, University of Rennes, Rennes, France (H.R., E.B., P.M., C.N., J.-C.F., C.B., J.-Y.G); and MR Application & Workflow Development, Siemens AG, Healthcare Sector, Erlangen, Germany (P.S.). - - 2014
Unenhanced time-resolved spin-labeled magnetic resonance angiography enables hemodynamic quantification in arteriovenous malformations (AVMs). Our purpose was to identify quantitative parameters that discriminate among different AVM components and to relate hemodynamic patterns with rupture risk. Sixteen patients presenting with AVMs (7 women, 9 men; mean age 37.1±15.9 years) were assigned to ...
Paek Sun Ha SH 0000-0003-3007-8653 Department of Neurosurgery, Seoul National University Hospital, Cancer Research Institute, Ischemic/Hypoxic Disease Institute, Seoul National University College of Medicine, Seoul, - - 2014
A 45-yr-old female patient was admitted with one-month history of headache and progressive left hemiparesis. Brain magnetic resonance imaging (MRI) demonstrated a mass lesion in her right frontal lobe. Her brain tumor was confirmed as a small cell glioblastoma. Her follow-up brain MRI, taken at 8 months after her initial ...
Mastropietro Alfonso - - 2014
To optimize signal-to-noise ratio (SNR) in fast spin echo (rapid acquisition with relaxation enhancement [RARE]) sequences and to improve sensitivity in ¹⁹F magnetic resonance imaging (MRI) on a 7T preclinical MRI system, based on a previous experimental evaluation of T₁ and T₂ actual relaxation times. Relative SNR changes were theoretically ...
Hetts S S Radiology, UCSF, San Francisco, CA, - - 2014
To advance the field of endovascular interventional MRI, which could allow real-time assessment of brain tissue viability during acute ischemic stroke interventions, we have developed a prototype MRI compatible magnetically assisted remote controlled catheter (MARC). We sought to compare navigation of a MARC catheter under real-time MRI with manual navigation ...
Van Doormaal Mark - - 2014
Elucidating in detail the relationships between blood hemodynamics and eventual plaque formation in the mouse aorta requires the use of individual-specific computational fluid dynamics (CFD) calculations. This paper considers various image-based experimental measurements (ultrasound (US), micro-CT, and MRI) for defining input parameters for such CFD calculations and their impact on ...
Tokoro Hirokazu H Department of Radiology, Shinshu University School of Medicine, 3-1-1 Asahi, Matsumoto 390-8621, - - 2014
We aimed to clarify the usefulness of free-breathing readout-segmented echo-planar imaging (RESOLVE), which is multi-shot echo-planar imaging based on a 2D-navigator-based reacquisition technique, for detecting malignant liver tumor. In 77 patients with malignant liver tumors, free-breathing RESOLVE and respiratory-triggered single-shot echo-planar imaging (SS-EPI) at 3-T MR unit were performed. We ...
Wilkmann Christoph C Department of Diagnostic and Interventional Radiology, RWTH Aachen University Hospital, Pauwelsstraße 30, 52074 , Aachen, Germany, - - 2014
   Percutaneous punctures are often performed under computed tomography (CT) guidance using a freehand method. Especially in challenging cases, initial accuracy of the needle placement is highly dependent on the radiologist's experience. Thus, a miniature lightweight guidance device was developed which is capable of assisting a radiologist during the needle placement ...
Dumez Jean-Nicolas JN School of Chemistry, University of Southampton, SO17 1BJ Southampton, UK; Institut de Chimie des Substances Naturelles, CNRS UPR2301, Avenue de la Terrasse, 91190 Gif-sur-Yvette, - - 2014
The longitudinal nuclear relaxation time, T1, sets a stringent limit on the range of information that can be obtained from magnetic resonance imaging (MRI) experiments. Long-lived nuclear spin states provide a possibility to extend the timescale over which information can be encoded in magnetic resonance. We introduce a strategy to ...
Li Chunyan C Institute of Clinical Radiology and Nuclear Medicine, University Hospital Mannheim, Medical Faculty Mannheim of the University of Heidelberg, Heidelberg, Germany Department of Nuclear Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China - - 2014
Precise assessment of lymph node metastases is critical to the treatment outcome and overall survival of patients with head and neck squamous cell carcinoma (HNSCC). The purpose of this study was to investigate the effect of time-of-flight (TOF) technique on the diagnostic performance of (18)F-FDG PET/CT for assessment of lymph ...
Shoji Sunao S Department of Urology, Tokai University Hachioji Hospital, Hachioji, - - 2014
Avascular areas on contrast-enhanced magnetic resonance imaging have been considered to be areas of localized prostate cancer successfully treated by high-intensity focused ultrasound. However, the optimal timing of magnetic resonance imaging has not been discussed. The thermal effect of high-intensity focused ultrasound is degraded by regional prostatic blood flow. Conversely, ...
Edelman Robert R RR Department of Radiology, NorthShore University HealthSystem, Evanston, Illinois, USA; Department of Radiology, Northwestern University, Chicago, Illinois, - - 2014
Both CT and MR angiography are accurate for the evaluation of luminal abnormalities in peripheral arterial disease (PAD). However, only CT (requiring exposure to potentially hazardous ionizing radiation) provides a reliable means to detect vascular calcifications. In this study, we demonstrate the feasibility of detecting peripheral arterial calcifications with MRI. ...
Elayaperumal Santhi - - 2014
This study demonstrates real-time scan plane control dependent on three-dimensional needle bending, as measured from magnetic resonance imaging (MRI)-compatible optical strain sensors. A biopsy needle with embedded fiber Bragg grating (FBG) sensors to measure surface strains is used to estimate its full 3-D shape and control the imaging plane of ...
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