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Debroye Elke E Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium. - - 2014
Magnetic resonance imaging (MRI) is a popular imaging technique in medical diagnostics. With the development of contrast agents, interest in its applications has grown tremendously. Significant effort has been made in order to identify the most important parameters that enhance the relaxation efficiency of MRI probes. Taking into account the ...
Magon Stefano - - 2014
Previous studies have demonstrated that white matter (WM) lesions bias automated brain tissue classifications and cerebral volume measurements. However, filling WM lesions using the intensity of neighbouring normal-appearing WM has been shown to increase the accuracy of automated volume measurements in the brain. In the present study, we investigate the ...
Lee Ki Hyun KH School of Medicine, Gachon University, Incheon, - - 2014
The aim of this study was to compare the diagnostic performances of multi-detector computed tomography (MDCT) reconstruction at two different slice thicknesses (1 mm, 'high resolution' vs. 5 mm, 'routine') with respect to the detection of blebs and bullae (BBs) in patients with primary spontaneous pneumothorax (PSP). Thirty-one patients underwent wedge resection ...
Nensa Felix F Institute of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital - - 2014
The following overview provides a summary of the state of the art and research as well as potential clinical applications of cardiovascular PET/MR imaging. PET/MRI systems have been clinically available for a few years, and their use in cardiac imaging has been successfully demonstrated. At this period in time, some ...
Puchner Stefan B SB Cardiac MR PET CT Program, Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, - - 2014
To evaluate whether iterative reconstruction algorithms improve the diagnostic accuracy of coronary CT angiography (CCTA) for detection of lipid-core plaque (LCP) compared to histology. CCTA and histological data were acquired from three ex vivo hearts. CCTA images were reconstructed using filtered back projection (FBP), adaptive-statistical (ASIR) and model-based (MBIR) iterative ...
Rube Martin A MA Division of Imaging and Technology, Institute for Medical Science and Technology, University of Dundee, Wilson House, 1 Wurzburg Loan, Dundee, DD2 1FD, UK, - - 2014
   A wireless interactive display and control device combined with a platform-independent web-based user interface (UI) was developed to improve the workflow for interventional magnetic resonance imaging (iMRI).    The iMRI-UI enables image acquisition of up to three independent slices using various pulse sequences with different contrast weighting. Pulse sequence, scan geometry ...
Odille Freddy F U947, Inserm, Nancy, France; Imagerie Adaptative Diagnostique et Interventionnelle, Université de Lorraine, Nancy, - - 2014
To evaluate the use of a nonrigid registration technique for detecting acute heart transplant rejection by MRI T2 quantification. Myocardial T2 quantification was achieved in 279 consecutive examinations from 78 different patients. The protocol consisted of 10 successive black-blood fast spin echo sequences with varying echo times, and a postprocessing ...
Qiu DA-Sheng DS Department of PET/CT, Hubei Cancer Hospital, Wuhan 430079, P.R. - - 2014
Metastatic tumours presenting as soft tissue metastasis (STM) are relatively rare. STM represents metastasis to the muscle and subcutaneous tissues. The majority of the currently available clinical or radiological data on STM consist of isolated case reports or reviews. The aim of this study was to report the manifestations, origin ...
Nishio Jun J Department of Orthopaedic Surgery, Faculty of Medicine, Fukuoka University, Fukuoka 814-0180, - - 2014
Calcifying aponeurotic fibroma (CAF) is a rare, locally aggressive fibroblastic lesion that occurs predominantly in the distal extremities of children and adolescents. In the present study, a case of pathologically proven CAF arising in the right little finger of a 69-year-old woman is presented. Physical examination revealed a firm, immobile, ...
Bulte Jeff W M JW Russell H. Morgan Department of Radiology and Radiological Science and Engineering, Division of MR Research, Cellular Imaging Section, Institute for Cell Engineering The Johns Hopkins University School of Medicine 720 Rutland Ave, 217 Traylor Baltimore, MD - - 2014
Summary A "hot spot" magnetic resonance (MR) imaging cell tracking technique has been developed that allows direct detection of dysprosium- or thulium-1,4,7,10-tetraazacyclododecane-α,α',α'',α'''-tetramethyl-1,4,7,10-tetraacetic acid (DOTMA)-labeled protons inside cells. These highly shifted protons may allow specific detection of multiple cell types because it does not rely on acquiring the proton signal from ...
Kanno Toru T Department of Urology, Ijinkai Takeda General Hospital, Kyoto, Japan. Electronic address: - - 2014
To assess the efficacy of ultrasonography (US) for the detection of ureteral stone using non-contrast-enhanced computed tomography (NCCT) as a standard reference. From January 2009 to September 2011, 428 patients underwent both NCCT and US on the same day. The sensitivity and specificity of US to detect ureteral stone was ...
Jing Lihong L Institute of Chemistry, Chinese Academy of Sciences, Bei Yi Jie 2, Zhong Guan Cun, Beijing, 100190, - - 2014
Light-emitting semiconductor quantum dots (QDs) combined with magnetic resonance imaging contrast agents within a single nanoparticle platform are considered to perform as multimodal imaging probes in biomedical research and related clinical applications. The principles of their rational design are outlined and contemporary synthetic strategies are reviewed (heterocrystalline growth; co-encapsulation or ...
Chen Hongmin H Department of Chemistry, The University of Georgia, Athens, Georgia, 30602, USA; Department of Radiology and Molecular Imaging Center, The Fourth Hospital of Harbin Medical University, Harbin, Heilongjiang, 150001, P. R. - - 2014
Nanoprobes for MRI and optical imaging are demonstrated. Gd@C-dots possess strong fluorescence and can effectively enhance signals on T1 -weighted MR images. The nanoprobes are low-toxic and despite a relatively large size, can be efficiently excreted by renal clearance from the host after systemic injection.
Guo Wei W School of Computer, Shenyang Aerospace University, Daoyi Development District, Shenyang, Liaoning 110136, - - 2014
The purpose of this study is to reveal how the performance of lung nodule segmentation algorithm impacts the performance of lung nodule detection, and to provide guidelines for choosing an appropriate segmentation algorithm with appropriate parameters in a computer-aided detection (CAD) scheme. The database consisted of 85 CT scans with ...
Lee June-Goo JG Department of Radiology, University of Pittsburgh, Pittsburgh, Pennsylvania - - 2014
To develop a fully automated method to segment cartilage from the magnetic resonance (MR) images of knee and to evaluate the performance of the method on a public, open dataset. The segmentation scheme consisted of three procedures: multiple-atlas building, applying a locally weighted vote (LWV), and region adjustment. In the ...
López-Mínguez José Ramón JR Infanta Cristina University Hospital, Badajoz, Spain. - - 2014
The adequate device size selection for left atrial appendage closure is crucial to ensuring adequate implantation and for avoiding the need for multiple attempts that increase the risk of complications. Our aim was to evaluate the information obtained using different imaging techniques to select the size of the closure device ...
Bastawrous Sarah S From the Department of Radiology, University of Washington School of Medicine, Seattle, Wash (S.B., P.B., F.B.); Department of Radiology, VA Puget Sound Health Care System, Mail Box 358280, S-114/Radiology, 1660 S Columbian Way, Seattle, WA 98108-1597 (S.B., P.B.); and Seattle Nuclear Medicine, Seattle, Wash (D.S.W.D., - - 2014
The skeleton is one of the most common sites for metastatic disease, particularly from breast and prostate cancer. Bone metastases are associated with considerable morbidity, and accurate imaging of the skeleton is important in determining the appropriate therapeutic plan. Sodium fluoride labeled with fluorine 18 (sodium fluoride F 18 [(18)F-NaF]) ...
Tümer Murat M Institute of Biomedical Engineering, Boğaziçi University, Istanbul, Turkey, - - 2014
We describe a new method for frequency down-conversion of MR signals acquired with the radio-frequency projections method for device localization. A low-amplitude, off-center RF pulse applied simultaneously with the echo signal is utilized as the reference for frequency down-conversion. Because of the low-amplitude and large offset from the Larmor frequency, ...
Chen Shuai S Department of Neurology, Zhengzhou University People's Hospital, Zhengzhou, Henan, - - 2014
Crossed cerebellar diaschisis (CCD) was a common radiological phenomenon manifested as reduced blood flow and metabolism in the cerebellar hemisphere contralateral to a supratentorial cerebral lesion. The hypoperfusion and hypometabolism in the contralateral cerebellum in CCD was traditionally detected by positron emission tomography (PET) and single-photon emission computed tomography (SPECT). ...
Palmowski Karin K Department of Pneumology and Respiratory Critical Care Medicine, Thoraxklinik Heidelberg, University of Heidelberg, Heidelberg, - - 2014
Background: Ventilation/perfusion single-emission photon CT (V/P-SPECT) is widely used to detect pulmonary embolism (PE). Any pathological deficit on P-SPECT with a corresponding unremarkable V-SPECT is considered an embolism. This means that a deficit on P-SPECT with a corresponding deficit on the ventilation scan correlates with other lung pathologies such as ...
Guillen Phillip T PT Departments of 1 Orthopaedic Surgery - - 2014
Object The authors undertook an independent, non-industry funded cadaveric study to evaluate the efficacy of a pedicle-probing device, which uses impedance measurement to warn of impending and actual pedicle screw breach. Methods A previously validated fresh-frozen cadaver model (saline-soaked spine) was used. Individuals at 3 levels of training (attending spine ...
Skinner Jack T JT Vanderbilt University Institute of Imaging Science, Vanderbilt University, St. Joseph's Hospital, Phoenix, AZ; Department of Radiology and Radiological Sciences, Vanderbilt University School of Medicine, St. Joseph's Hospital, Phoenix, - - 2014
Perfusion-based changes in MR signal intensity can occur in response to the introduction of exogenous contrast agents and endogenous tissue properties (e.g. blood oxygenation). MR measurements aimed at capturing these changes often implement single-shot echo planar imaging (ssEPI). In recent years ssEPI readouts have been combined with parallel imaging (PI) ...
Goto Takao T Applications and Workflow, GE Healthcare, Hino, Tokyo, Japan. Electronic address: - - 2014
To improve the workflow of MRI abdominal scans by reducing the examination time and operator skill dependence related to bolus tracker positioning. Ten or more axial images of two-dimensional scout scan were analyzed to identify the aorta and detect its center position using the mean shift to allow automated bolus ...
Choudhri Asim F AF Department of Radiology, University of Tennessee Health Science Center; Memphis, TN, USA - Le Bonheur Neuroscience Institute, Le Bonheur Children's Hospital; Memphis, TN, USA - - - 2014
We describe a 14-year-old boy with a pilocytic astrocytoma of the left caudate head. Preoperative localization MR imaging (MRI) was performed in the operating room, and spatial distortion was noted felt to be related to head positioning relative to the isocenter of the magnetic field. The distortion artifact was subtle ...
Troprès Irène I IRMaGe, Université Grenoble Alpes, Grenoble, France; UMS 3552, CNRS, Grenoble, France; US 017, INSERM, Grenoble, France; IRMaGe, Hôpital Michallon, Centre Hospitalier Universitaire de Grenoble, Grenoble, France; Université Joseph Fourier, Grenoble Institut des Neurosciences, Grenoble, France; INSERM, U836, Grenoble, - - 2014
Twenty years ago, theoretical developments were initiated to model the behavior of the NMR transverse relaxation rates in presence of vessels. These developments enabled the MRI-based mapping of mean vessel diameter, microvascular density, and vessel size index with comparable results to those obtained by a pathologist. The transfer of these ...
Dailey Tyler A TA Department of Radiology, San Antonio Military Medical Center, Fort Sam Houston, Texas - - 2014
The goal of this teaching case study is to demonstrate the novel use of (99m)Tc-HMPAO-labeled white blood cells (WBCs) in diagnosing chronic recurrent multifocal osteomyelitis (CRMO). (99m)Tc-HMPAO-labeled white blood cells were utilized to diagnose CRMO. Classically, CRMO is evaluated scintigraphically using (99m)Tc-methylene diphosphonate/hydroxymethylene diphosphonate. (99m)Tc-HMPAO-labeled WBCs were chosen over (111)In-labeled ...
Prevrhal Sven S Philips Research Europe, Hamburg, Germany - - 2014
Fusion of information from PET and MR imaging can increase the diagnostic value of both modalities. This work sought to improve (18)F FDG PET image quality by using MR Dixon fat-constrained images to constrain PET image reconstruction to low-fat regions, with the working hypothesis that fatty tissue metabolism is low ...
Jin Rongrong R National Engineering Research Center for Biomaterials, Sichuan University, Chengdu 610064, - - 2014
Superparamagnetic iron oxide nanoparticles (SPION) based magnetic resonance imaging (MRI) is a powerful non-invasive tool in biomedical imaging, clinical diagnosis and therapy. In this review, the physicochemical properties of SPION and their in vivo performance were thoroughly discussed, also covering how surface engineering will prolong the circulation time and overcome ...
Zuo Ming-Yan MY CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, P. R. - - 2014
Endotoxin, which is also known as lipopolysaccharide (LPS), is a marker for intruding gram-negative pathogens. It is essential to detect endotoxin quickly and sensitively in a complex milieu. A new flow cytometry (FCM)-based magnetic aptasensor assay that employs two endotoxin-binding aptamers and magnetic beads has been developed to detect endotoxin. ...
Smith Matthew E ME Department of ENT Surgery, Addenbrooke's Hospital, Cambridge University Hospitals NHS Foundation Trust, Hills Road, Cambridge, United Kingdom, CB2 - - 2014
A 61-year-old man with a history of fish bone ingestion and poorly localized symptoms was seen. His clinical examination was unremarkable, but CT demonstrated a foreign body deeply embedded within his tongue. Intraoperative ultrasound (US) guidance facilitated identification of a bone, allowing a needle to be placed as a guide ...
Tiwari S S Department of Radiology, Nottingham University Hospitals NHS Trust, Derby Road, NG7 2UH, Nottingham, UK, - - 2014
We completed a full audit cycle to assess waiting times for inpatients with suspected occult femoral neck fracture to get MRI scan, identify the causes of delay and implement the changes to reduce the waiting times. We have proved that inpatient MRI waiting times can significantly be reduced by a ...
Ciarmiello Andrea A Nuclear Medicine Department S. Andrea Hospital Via Vittorio Veneto, 197 19124 La Spezia Italy. - - 2014
In the last years the hybrid modality has resulted in a rapid development of imaging techniques in nuclear medicine, offering new opportunities to patients and staff involved in their use. Being consolidated the clinical role of positron emission tomography-computed tomography (PET-CT), the diffusion and the consequent value of Single-photon emission ...
Lefranc Michel M Service de Neurochirurgie, CHU Amiens, Amiens, - - 2014
Objective: To establish the impact of the imaging modality, registration method and use of intraoperative computed tomography (CT) scan on the accuracy of the ROSA® stereotactic robot. Methods: Using a dedicated phantom device, we measured the accuracy of the stereotactic robot for 20 targets as a function of the registration ...
Zheng Linfeng L Department of Radiology, First People's Hospital, Shanghai Jiaotong University, Shanghai 200080, China. Electronic address: - - 2014
Neuroimaging plays a pivotal role in clinical practice. Currently, computed tomography (CT), magnetic resonance imaging (MRI), ultrasonography, and positron emission tomography (PET) are applied in the clinical setting as neuroimaging modalities. There is no optimal imaging modality for clinical peripheral nerve imaging even though fluorescence/bioluminescence imaging has been used for ...
Yuan Jing J Medical Physics and Research Department, Hong Kong Sanatorium & Hospital, Happy Valley, Hong Kong, China; Department of Imaging and Interventional Radiology, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China; CUHK Shenzhen Research Institute, Shenzhen, Guangdong, - - 2014
The aim of this study was to explore the feasibility and repeatability of amide proton transfer-weighted (APTw) MRI for the head and neck on clinical MRI scanners. Six healthy volunteers and four patients with head and neck tumors underwent APTw MRI scanning at 3 T. The APTw signal was quantified by ...
Kim Ji Young JY From the Departments of *Nuclear Medicine, †Radiology, and ‡Pathology, Hanyang University Hospital, Seoul, - - 2014
Nodular fasciitis (NF) is a common benign soft tissue tumor. However, F-FDG PET/CT findings of NF are limited. Two cases of NF are described that mimic soft tissue metastasis on F-FDG PET/CT during surveillance. F-FDG PET/CT is well documented in the surveillance of malignancy and increasing worldwide. There are growing ...
Tachibana Ayano A From the *Department of Clinical Radiology, St James's University Hospital, Leeds; †Department of Clinical Radiology, Pinderfields Hospital, Wakefield; and ‡Department of Nuclear Medicine, St James's University Hospital, Leeds, United - - 2014
A 66-year-old woman presents with progressive bilateral swelling of her fingers, elbows, and toes. Initially thought to represent an inflammatory peripheral arthropathy, the patient underwent rheumatology review, but subsequent tissue biopsy confirmed diffuse large B-cell lymphoma. Results of bone marrow biopsy and staging CT were negative. F-FDG PET/CT demonstrates FDG-avid ...
Eichler K K Institute for Diagnostic and Interventional Radiology, J. W. Goethe University of Frankfurt, Germany - - 2014
To evaluate retrospectively an automated method for the separate detection of subcutaneous and visceral fat in the abdominal region by magnetic resonance studies in HIV-positive patients under highly active antiretroviral therapy. The patients were divided into four different groups: lipoatrophy, lipohypertrophy, mixed and the control group. The use of software ...
Lecouvet F E FE MRI Unit, Dept of Radiology, Centre du Cancer and Institut de Recherche Expérimentale et Clinique (IREC), Cliniques Universitaires Saint Luc, Université Catholique de Louvain, Brussels, Belgium. Electronic address: - - 2014
Assessment of the response to treatment of metastases is crucial in daily oncological practice and clinical trials. For soft tissue metastases, this is done using computed tomography (CT), Magnetic Resonance Imaging (MRI) or Positron Emission Tomography (PET) using validated response evaluation criteria. Bone metastases, which frequently represent the only site ...
Liu Lin L Dept. of Electrical & Computer Engineering, University of Florida, Gainesville, FL - - 2014
A fiber-optic 3D confocal scanning microendoscope employing MEMS scanners for both lateral and axial scan was designed and constructed. The MEMS 3D scan engine achieved a lateral scan range of over ± 26° with a 2D MEMS scanning micromirror and a depth scan of over 400 μm with a 1D ...
Busireddy Kiran K KK Kiran K Busireddy, Mamdoh AlObaidy, Miguel Ramalho, Janaka Kalubowila, Liu Baodong, Ilaria Santagostino, Richard C Semelka, Department of Radiology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-7510, United - - 2014
Pancreatitis is defined as the inflammation of the pancreas and considered the most common pancreatic disease in children and adults. Imaging plays a significant role in the diagnosis, severity assessment, recognition of complications and guiding therapeutic interventions. In the setting of pancreatitis, wider availability and good image quality make multi-detector ...
Wang Rui R School of Biomedical Engineering and Med-X Research Institute, Shanghai Jiao Tong University, Shanghai, - - 2014
White matter lesions (WMLs) are commonly observed on the magnetic resonance (MR) images of normal elderly in association with vascular risk factors, such as hypertension or stroke. An accurate WML detection provides significant information for disease tracking, therapy evaluation, and normal aging research. In this article, we present an unsupervised ...
Boccardi Marina M LENITEM (Laboratory of Epidemiology, Neuroimaging and Telemedicine), IRCCS - S. Giovanni di Dio - Fatebenefratelli Brescia, Italy. Electronic address: - - 2014
This study aimed to have international experts converge on a harmonized definition of whole hippocampus boundaries and segmentation procedures, to define standard operating procedures for magnetic resonance (MR)-based manual hippocampal segmentation. The panel received a questionnaire regarding whole hippocampus boundaries and segmentation procedures. Quantitative information was supplied to allow evidence-based ...
Yankeelov Thomas E TE Department of Radiology and Radiological Sciences, Vanderbilt University Institute of Imaging Science, Vanderbilt University Medical Center, AA-1105 Medical Center North, 1161 21st Avenue South, Nashville, TN 37232-2310, - - 2014
Advances in hardware and software have enabled the realization of clinically feasible, quantitative multimodality imaging of tissue pathophysiology. Earlier efforts relating to multimodality imaging of cancer have focused on the integration of anatomical and functional characteristics, such as PET-CT and single-photon emission CT (SPECT-CT), whereas more-recent advances and applications have ...
Renker Matthias M Heart & Vascular Center, Medical University of South Carolina, Charleston, South Carolina; Kerckhoff Heart and Thorax Center, Bad Nauheim, - - 2014
Noninvasive fractional flow reserve (FFR) from coronary computed tomography angiography (cCTA) correlates well with invasive FFR and substantially improves the detection of obstructive coronary artery disease. However, with current algorithms, computed tomography (CT)-based FFR is derived off-site in an involved time-consuming manner. We sought to investigate the diagnostic performance of ...
Choi Hongyoon H Department of Nuclear Medicine, Seoul National University Hospital, Seoul, Korea Department of Molecular Medicine and Biopharmaceutical Science, Graduate School of Convergence Science and Technology, Seoul National University, Seoul, - - 2014
Attenuation correction (AC) with an ultrashort echo time (UTE) sequence has recently been used in combination with segmentation for cortical bone identification for brain PET/MR studies. The purpose of this study was to evaluate the quantification of (18)F-fluoropropyl-carbomethoxyiodophenylnortropane ((18)F-FP-CIT) binding in brain PET/MR, particularly focusing on effects of UTE-based AC ...
Yue Yunlong Y Department of Radiology, Beijing Friendship Hospital, Capital Medical University, Beijing, 100050, - - 2014
The aim was to compare high-resolution computed tomography (HRCT) and thin-section magnetic resonance imaging (MRI) findings of facial nerve hemangioma. The HRCT and MRI characteristics of 17 facial nerve hemangiomas diagnosed between 2006 and 2013 were retrospectively analyzed. All patients included in the study suffered from a space-occupying lesion of ...
Xu Rui R Ritsumeikan Global Innovation Research Organization, Ritsumeikan University, 1-1 Nojihigashi 1-chome, Kusatsu, Shiga, 525-8577, Japan, - - 2014
The purpose is to develop and evaluate the ability of the computer-aided diagnosis (CAD) methods that apply texture analysis and pattern classification to differentiate malignant and benign bone and soft-tissue lesions on 18F-fluorodeoxy-glucose positron emission tomography/computed tomography ((18)F-FDG PET/CT) images. Subjects were 103 patients with 59 malignant and 44 benign ...
Li Yulai Y Department of Radiology, Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, PR - - 2014
Chronic progressive swelling of the lower extremity due to secondary lower extremity lymphedema (LEL) can affect a patient's quality of life, both physically and psychologically. A feasible and reproducible method for detecting and staging LEL will facilitate decision-making about appropriate management strategies. To determine whether the thickness of the soft ...
Zhao Xuna X Beijing Key Laboratory of Medical Physics and Engineering, Institute of Heavy Ion Physics, School of Physics, Peking University, Beijing, China; Center for MRI Research, Peking University, Beijing, China; IS Clinical Science, Philips Healthcare, - - 2014
To develop a novel analysis method to evaluate quantitative amide proton transfer (qAPT) effects with reduced interference of conventional magnetization transfer effect. A modified Z-spectrum is generated by a fitting procedure that achieves an effectively reduced magnetization transfer asymmetry. A qAPT map is then produced by subtraction of the original ...
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