Search Results
Results 1 - 50 of 1874
1 2 3 4 5 6 7 8 9 10 >
Koonjoo Neha N Centre de Résonance Magnétique des Systèmes Biologiques, UMR 5536 CNRS Université Bordeaux Segalen, Bordeaux, - - 2014
There is an increasing interest in developing novel imaging strategies for sensing proteolytic activities in intact organisms in vivo. Overhauser-enhanced MRI (OMRI) offers the possibility to reveal the proteolysis of nitroxide-labeled macromolecules thanks to a sharp decrease of the rotational correlation time of the nitroxide moiety upon cleavage. In this ...
Togni A A Clinic for Small Animal Surgery, Surgery/Section of Neurology, Vetsuisse Faculty University of Zurich, Zurich, - - 2014
To evaluate clinical signs, describe lesions and differences in the magnetic resonance imaging appearance of spinal new bone formations classified as disseminated idiopathic spinal hyperostosis and/or spondylosis deformans on radiographs and compare degeneration status of the intervertebral discs using the Pfirrmann scale. Retrospective analysis of 18 dogs presented with spinal ...
Menger Dirk J DJ Department of Otorhinolaryngology / Head and Neck Surgery, Center for Facial Plastic and Reconstructive Surgery, University Medical Center, Utrecht, The - - 2014
CT-MCA is an objective computerized determination of the minimum cross-sectional area of the nasal passage on CT. CT-MCA was evaluated before and after surgery of the external nasal valve using the "Lateral Crus pull-up" procedure (LCPU). The outcomes of CT-MCA were compared with other currently available objective tests for nasal ...
Kececi Burcin B Department of Orthopaedics and Traumatology, Faculty of Medicine, Ege University, 35100, Bornova, Izmir, Turkey, - - 2014
To evaluate the diagnostic value of direct magnetic resonance (MR) arthrography in detection of re-torn or unhealed menisci which were previously repaired. Twenty-six menisci of 24 symptomatic patients who had undergone a meniscus repair surgery were included in this retrospective study. These patients had been evaluated with gadolinium-enhanced direct MR ...
Magee Thomas T NSI 255 North Sykes Creek Parkway Merritt Island , Florida 33573 tmageerad@cfl.rr.com 321 454 6335 University of Central Florida School of Medicine 6850 Lake Nona Blvd. Orlando, Fl 32827 - - 2014
Objective. We report the prevalence of surgical intervention on shoulder labral lesions detected at MR examination and how surgeons describe labral tears in their arthroscopy reports. Methods and materials. A retrospective review of 100 consecutive patients age fifty or less who had shoulder labral tears on MR and went to ...
Park J-H JH Department of Neurology, Myongji Hospital, Goyang, - - 2014
White matter hyperintensities (WMHs) on magnetic resonance imaging (MRI) have been linked to small-vessel disease, but the precise pathogenesis underlying WMHs remains unclear. Studies about an association of WMHs with extracranial atherosclerotic stenosis (ECAS) showed conflicting results and the relationship of WMHs with intracranial atherosclerotic stenosis (ICAS) is uncertain. A ...
Harnish Roy R Department of Radiology and Biomedical Imaging, University of California, San Francisco, Box 0946, San Francisco, CA, 94143-0946, USA, - - 2014
To determine if metal artefact reduction (MAR) combined with a priori knowledge of prosthesis material composition can be applied to obtain CT-based attenuation maps with sufficient accuracy for quantitative assessment of (18)F-fluorodeoxyglucose uptake in lesions near metallic prostheses. A custom hip prosthesis phantom with a lesion-sized cavity filled with 0.2 ml ...
Vivian Diana - - 2014
A novel trifluorinated cholic acid derivative, CA-lys-TFA, was designed and synthesized for use as a tool to measure bile acid transport non-invasively using magnetic resonance imaging (MRI). In the present study, the in vivo performance of CA-lys-TFA for measuring bile acid transport by MRI was investigated in mice. Gallbladder CA-lys-TFA ...
Garabedian C C Department of Obstetrics, Jeanne de Flandre Hospital, CHRU Lille, - - 2014
Prenatal diagnosis of esophageal atresia (EA) remains a challenge. Our objective was to evaluate the combination of sonography, Magnetic resonance imaging (MRI) and amniotic fluid biochemical markers in prenatal diagnosis of EA. Retrospective study of all cases with antenatal suspicion of EA from January 2008 to May 2013 in our ...
Sood Amit A Division of Otolaryngology-Head and Neck Surgery, George Washington University, Washington, DC, - - 2014
The objective of our study is to describe the technique of distal endotracheal tube (ETT) positioning for avoiding cuff rupture and validate the technique in a virtual tracheostomy model. A prospective nonrandomized case series of 129 patients who had undergone tracheostomy using the senior author's technique were evaluated. Primary outcome ...
Akkari M M Service d'ORL et chirurgie cervico faciale, université Clermont 1, CHU de Clermont-Ferrand, 58, rue Montalembert, BP 69, 63003 Clermont-Ferrand cedex 1, France. Electronic address: - - 2014
To evaluate the reliability of magnetic resonance imaging (MRI) for the diagnosis of middle ear cholesteatoma and to determine the contribution of each MRI sequence. A series of 97 cases was reviewed, corresponding to 89 patients (43 women, 46 men). Each patient was assessed by the following MRI protocol: T1-weighted, T2-weighted, early contrast-enhanced ...
Lee Young Han YH Department of Radiology, Research Institute of Radiological Science, Medical Convergence Research Institute, and Severance Biomedical Science Institute, Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-gu, Seoul, 120-752, Republic of - - 2014
To assess the usefulness of T2*-corrected fat fraction (FF) map from volume-interpolated breathhold examination (VIBE) magnetic resonance (MR) sequence in patients with the rotator cuff pathology. The phantom study was performed to validate the FF maps. Eighty-nine shoulder MR arthrographies were analyzed: (1) divided into three groups namely tendinopathy/normal tendons, ...
Bedoya Maria A MA Radiology Department, The Children's Hospital of Philadelphia, 34th and Civic Center Boulevard, Philadelphia, PA, 19104, USA, - - 2014
Bilateral agenesis of the anterior cruciate ligament (ACL) is extremely rare. We describe a 13-year-old girl who presented with bilateral knee pain without history of trauma; she has two family members with knee instability. Magnetic resonance imaging showed bilateral absence of the ACL, and medial posterior horn meniscal tears. Bilateral ...
McKnight Colin D CD Department of Radiology, University of Michigan, Taubman Center/B1/132 F, 1500 E Medical Center Drive, Ann Arbor, MI, 48105, - - 2014
Over the last decade there has been escalating concern regarding the increasing radiation exposure stemming from CT exams, particularly in children. Adaptive statistical iterative reconstruction (ASIR) is a relatively new and promising tool to reduce radiation dose while preserving image quality. While encouraging results have been found in adult head ...
Joo Ijin I From the Department of Radiology (I.J., J.M.L., J.K.H., B.I.C.) and Institute of Radiation Medicine (J.M.L., J.K.H., B.I.C.), Seoul National University Hospital, 101 Daehak-ro, Jongno-gu, Seoul 110-744, - - 2014
Purpose To evaluate the diagnostic value of intravoxel incoherent motion (IVIM) diffusion-weighted (DW) magnetic resonance (MR) imaging in the quantitative assessment of the therapeutic efficacy of a vascular disrupting agent (VDA) (CKD-516) in rabbit VX2 liver tumors. Materials and Methods The institutional animal care and use committee approved this study. ...
Grueninger Patrick P Department of Surgery, Waid Hospital Zurich, Zurich, - - 2014
The purpose of this study was to prospectively assess the efficacy of arthroscopic repair of isolated high-grade subscapularis (SSC) tendon lesions by means of clinical follow-up combined with magnetic resonance imaging investigations. Between January 2008 and September 2010, 11 patients (9 men and 2 women; mean age, 45 ± 10 years) ...
Struffert Tobias T Department of Neuroradiology, University of Erlangen-Nuremberg, Schwabachanlage 6, 91054, Erlangen, Germany, - - 2014
Flat-detector CT (FD-CT) is used for a variety of applications. Additionally, 3D rotational angiography (3D DSA) is used to supplement digital subtraction angiography (DSA) studies. The aim was to measure and compare the dose of (1) standard DSA and 3D DSA and (2) analogous FD-CT and multislice CT (MSCT) protocols. ...
Avery Daniel M DM 3rd St. Luke's University Hospital, PPHP-2, 801 Ostrum Street, Bethlehem, PA 18015. E-mail address for K.S. Matullo: - - 2014
Distal radial fracture characterization with standard radiographs has been consistently poor, leading to a widespread use of computed tomography (CT) with this injury. Traction radiographs have recently been shown to improve interobserver reliability for fracture characterization and treatment. Our goal was to compare five traction radiographs and CT images to ...
Kang Dong Min DM Department of Radiology, Wonkwang University School of Medicine, 344-2 Sinyong-dong, Iksan, Jeonbuk 570-749, South - - 2014
To identify micro-computed tomography (CT) imaging biomarkers for evaluating the effects of emodin, a potential drug to treat osteoporosis, in the mouse model of lipopolysaccharide (LPS)-mediated osteoporosis. Forty male imprinting control region (ICR) mice with LPS-induced bone resorption were equally divided into four experimental groups: phosphate-buffered saline-treated (control), emodin-treated, LPS-treated, ...
Knafo S Emmanuelle SE Department of Clinical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, NY - - 2014
Case Description-An 8-year-old male red kangaroo (Macropus rufus) was evaluated with a 2-week history of vomiting and anorexia. Four days prior, the patient became refractory to medical management. The kangaroo was admitted for diagnostic testing and treatment including whole body CT, blood work, and emergency laparotomy. Clinical Findings-CT findings of ...
Amin Parag P 1 Department of Radiology, Northwestern Memorial Hospital, 737 N Michigan Ave, Ste 1600, Chicago, IL - - 2014
OBJECTIVE. The objective of our study was to assess the diagnostic performance of quiescent-interval single-shot (QISS) MR angiography (MRA) at 3 T for the evaluation of chronic lower limb ischemia. SUBJECTS AND METHODS. For this prospective study, 25 patients referred for lower extremity angiography for suspected or known chronic peripheral ...
Cockburn John F JF Department of Imaging, The Canberra Hospital, Australian National University, Canberra, Australian Capital Territory, - - 2014
This study examines the effect of augmenting the ultrasound reflectivity of needles using a novel electrolytic echo enhancement method. Needles were connected by a lead to the negative terminal of a 4.5 V direct current source. A grounding pad, connected to the positive terminal, was positioned on the undersurface of an ...
Li Ke K Department of Medical Physics, University of Wisconsin-Madison, 1111 Highland Avenue, Madison, Wisconsin - - 2014
To reduce radiation dose in CT imaging, the statistical model based iterative reconstruction (MBIR) method has been introduced for clinical use. Based on the principle of MBIR and its nonlinear nature, the noise performance of MBIR is expected to be different from that of the well-understood filtered backprojection (FBP) reconstruction ...
Huang Chuan C Center for Advanced Medical Imaging Sciences, Division of Nuclear Medicine and Molecular Imaging, Department of Imaging, Massachusetts General Hospital, Boston, Massachusetts 02114 and Department of Radiology, Harvard Medical School, Boston, Massachusetts - - 2014
Artifacts caused by head motion present a major challenge in brain positron emission tomography (PET) imaging. The authors investigated the feasibility of using wired active MR microcoils to track head motion and incorporate the measured rigid motion fields into iterative PET reconstruction. Several wired active MR microcoils and a dedicated ...
Hofstad Erlend Fagertun EF Department of Medical Technology, SINTEF Technology and Society, Trondheim N-7030, - - 2014
Electromagnetic based navigated bronchoscopy using preoperative CT images has reached the clinic during the last decade. One of the challenges is the "CT to patient anatomy alignment" of the CT images acquired days or even weeks ahead of bronchoscopy. An automatic registration method, without manual registration of anatomical landmarks, was ...
Oh Jihun J School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, Georgia - - 2014
In multiphase contrast-enhanced magnetic resonance imaging (CE-MRI), liver segmentation is an important preprocessing step for the computer-aided evaluation of liver disease. However, because of the liver's irregular shape, proximity to surrounding organs, and large intensity variation, and peripheral contrast enhancement in the kidney, liver segmentation has been very challenging. This ...
Zhao Xue-Song XS Departments of *Radiology and †Gastroenterology, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, - - 2014
Crohn's disease (CD) and intestinal tuberculosis (ITB) have similar clinical, radiological, and endoscopic features. The objective of our study was to investigate the values of clinical features and computed tomographic (CT) enterographic manifestations in the differential diagnosis between CD and ITB. Clinical features and CT enterographic manifestations in a cohort ...
Taylor Tim T Department of Imaging, Queens Medical Centre campus, Nottingham University Hospitals NHS Trust, Derby Road, Nottingham, UK, NG7 - - 2014
The diagnosis of death using neurological criteria (brain death) has profound social, legal and ethical implications. The diagnosis can be made using standard clinical tests examining for brain function, but in some patient populations and in some countries additional tests may be required. Computed tomography (CT) angiography, which is currently ...
Zheng Fang F Laboratory of Cellular and Molecular Immunology, Vrije Universiteit Brussel, Brussels, - - 2014
An accurate and noninvasive tracer able to detect molecular events underlying the development of rheumatoid arthritis (RA) would be useful for RA diagnosis and drug efficacy assessment. A complement receptor of the Ig superfamily (CRIg) is expressed on synovial macrophages of RA patients, making it an interesting target for molecular ...
Koning Jeffrey L JL Department of Radiology, University of California San Diego, 200 W. Arbor Drive, San Diego, CA, 92103-8756, USA, - - 2014
Unenhanced MRI has emerged as a useful tool for diagnosing pediatric acute appendicitis. The use of contrast-enhanced MRI for diagnosing pediatric appendicitis has not been documented. The purpose of this study is to examine the diagnostic performance of contrast-enhanced MRI for acute appendicitis and alternative entities in the pediatric population ...
Hennersdorf Florian F *Department of Diagnostic and Interventional Neuroradiology, Hoppe-Seyler-Straße 3; and †Department of Otorhinolaryngology, Elfriede-Aulhorn-Straße 5, Tübingen, - - 2014
Goldenhar syndrome is a developmental disorder presenting with orofacial and vertebral anomalies, which are also accompanied by abnormalities in other organs. We examined temporal bone changes with special emphasis on inner ear abnormalities in these patients. A retrospective review of 7 new cases in addition to a previously published series ...
Maffione Anna Margherita AM From the Departments of *Nuclear Medicine, PET Unit, and †Neurology, Santa Maria della Misericordia Hospital, Rovigo, Italy; and ‡Department of Radiology, University of Southern California, Los Angeles, - - 2014
A 35-year-old man underwent contrast-enhanced MRI and F-FDG PET/CT for acute peripheral paresthesia, vision loss, muscle weakness, and difficulty walking. T2-weighted MRI demonstrated multiple bright periventricular supratentorial and infratentorial white matter lesions, including 2 with nodularity. Both nodular lesions showed moderate focal FDG uptake (SUVmax, 6.9 in both cases). Cerebrospinal ...
Hur Bo Yun BY From the *Department of Radiology, SMG-SNU Boramae Medical Center; †Department of Radiology, and ‡Institute of Radiation Medicine, Seoul National University Hospital, Seoul, South - - 2014
The objective of this study was to investigate the image quality and diagnostic performance of model-based iterative reconstruction (MBIR) for hepatic vessel evaluation on low-tube-voltage (100 kilovolt [peak]) liver computed tomography (CT) for living donors. Fifty-one liver donor candidates (low-kilovolt group) underwent low-tube-voltage CT, which was reconstructed using filtered back ...
Kennedy Sean A SA Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ontario, Canada. Electronic address: - - 2014
In 2012, the Ontario government attempted to reduce inappropriate lumbar MRI referrals through guideline and decision-aid distributions to physicians as well as threats of financial penalties. The goals of this study were to determine if any change in lumbar MRI referral appropriateness occurred after this policy change at a tertiary ...
Sewerin Philipp - - 2014
To evaluate a combined rheumatoid arthritis magnetic resonance imaging score (RAMRIS) for hand and foot (HaF-score) in rheumatoid arthritis (RA). Magnetic resonance imaging (MRI, 0.2 Tesla) of the dominant hand and foot of 26 ACPA positive RA patients before and 6 months after initiation of methotrexate was obtained. RAMRIS of ...
Deng Tianwei - - 2014
We placed active magnetic metamaterials on metallic surface to implement a tunable reflector with excellent agile performance. By incorporating active elements into the unit cells of the magnetic metamaterial, this active magnetic metamaterial can be tuned to switch function of the reflector among a perfect absorber, a perfect reflector and ...
Alvi Arsalan Ahmad - - 2014
Spinal tuberculosis presents in various pathological patterns. The clinical presentation and often the management depend on exact pathological findings. Objective of study was to evaluate the Pathology of spinal tuberculosis as depicted by MRI findings in 119 consecutive cases of spinal TB.Methodology: It was a cross sectional and observational study ...
Kawashiri Shin-Ya SY Department of Public Health and Department of Immunology and Rheumatology, Nagasaki University Graduate School of Biomedical Sciences, Center for Health & Community Medicine, Nagasaki University, Department of Health Sciences and Department of Radiological Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki and Department of Internal Medicine, Sasebo City General Hospital, Sasebo, - - 2014
Objective. The aim of this study was to explore whether assessment of synovial inflammation by ultrasonography correlates with MRI-proven osteitis in patients with RA.Methods. Thirty RA patients who fulfilled 2010 RA classification criteria and were naive to DMARDs, including biologics and glucocorticoids, were consecutively enrolled in this study. Grey scale ...
Erdoğan Ezgi Basak EB From the *Department of Nuclear Medicine, Bezmialem Vakif University; and †Department of Nuclear Medicine, Istanbul University, Cerrahpasa Medical Faculty, Istanbul, - - 2014
Primary cardiac sarcomas are extremely rare tumors. In this case report, we presented the condition of a 37-year-old male patient diagnosed with myxofibrosarcoma after histopathologic evaluation of the left atrium mass excision. FDG PET/CT was performed and showed recurrent hypermetabolic lesions in the left atrial wall and right anterior mediastinal ...
Viti Andrea A Thoracic Surgery Unit, S. Croce e Carle Hospital, Cuneo, - - 2014
A best evidence topic in thoracic surgery was written according to a structured protocol. The question addressed concerned the employment of 18-fluorine fluorodeoxyglucose positron emission tomography/computed tomography (PET-CT) in the preoperative evaluation of thymic epithelial neoplasms (TENs). We reviewed its role as a predictor of Masaoka stage and histology (according ...
Wissman Robert D RD From the Departments of *Radiology and †Orthopaedic Surgery, University of Cincinnati Medical Center, Cincinnati, - - 2014
The trochlear cleft is a recently described vertically oriented, low-signal cartilage lesion centered in the trough of the trochlear cartilage. The purpose of our study was to determine the incidence of clefts in an at-risk group of athletes and correlate these findings with clinical and physical examination results. Sixteen female ...
Khawaja Ranish Deedar Ali RD From the *MGH Imaging, Division of Thoracic Radiology, Massachusetts General Hospital and Harvard Medical School, Boston, MA; and †Philips Healthcare Research Team, Cleveland, - - 2014
To assess lesion detection and diagnostic confidence of computed tomography (CT) of the chest performed at less than 1 mSv with 2 iterative reconstruction (IR) techniques. Ten patients gave written informed consent for the acquisitions of images at submillisievert dose (0.9 mSv), in addition to clinical standard-dose (SD) chest CT ...
Wrzosek M M Department of Internal Medicine and Clinic of Horses, Dogs and Cats, Wroclaw University of Environmental and Life Sciences, Wrocław, 50-366, - - 2014
A three-year-old Border collie was diagnosed with a bipartite atlas and bilateral forelimb hypodactyly. The dog showed signs of acute, non-progressive neck pain, general stiffness and right thoracic limb non-weight-bearing lameness. Computed tomography imaging revealed a bipartite atlas with abaxial vertical bone proliferation, which was the cause of the clinical ...
Coutinho Joana J Neuropsychophysiology Lab, CIPsi, School of Psychology, University of Minho, Braga, - - 2014
Bulimia nervosa (BN) is an eating disorder characterized by recurrent episodes of binge eating and inappropriate compensatory behaviors (such as purging, fasting, or excessive exercise) to prevent weight gain. BN has been associated with deficits in inhibitory control processes. The basal ganglia specifically, the nucleus accumbens (NAc) and the caudate ...
Yang Cheng Hui CH Department of Medical Imaging, Pojen General Hopsital, Taipei, Taiwan; School of Medicine, National Yang-Ming University, Taipei, - - 2014
CT scans of the lumbar spine (CTLS) have demonstrated a higher level of accuracy than plain film, and have been used to assess patients with spinal disorder when MR is not available. Nevertheless, radiation exposure remains a serious safety concern. Iterative reconstruction (IR) decreases the CT radiation dose for diagnostic ...
Orth Robert C RC From the Edward B. Singleton Department of Pediatric Radiology (R.C.O., R.P.G., P.M., G.S.B.) and Surgical Outcomes Center (W.Z.), Texas Children's Hospital, Baylor College of Medicine, 6701 Fannin St, MC CC470.01, Houston, TX - - 2014
Purpose To prospectively compare nonenhanced magnetic resonance (MR) imaging and ultrasonography (US) for the diagnosis of pediatric appendicitis. Materials and Methods This HIPAA-compliant study was approved by the institutional review board, and written informed consent was obtained from the patient's parent or guardian. Eighty-one patients (34 male, 47 female; mean ...
Keuken M C MC Cognitive Science Center Amsterdam, Amsterdam, the Netherlands; Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig, - - 2014
Functional magnetic resonance imaging (MRI) data are usually registered into standard anatomical space. However, standard atlases, such as LPBA40, the Harvard-Oxford atlas, FreeSurfer, and the Jülich cytoarchitectonic maps all lack important detailed information about small subcortical structures like the Substantia nigra and Subthalamic nucleus. Here we introduce a new subcortical ...
Steffen Frank F Section of Neurology, Vetsuisse Faculty, University of Zurich, 8057 Zurich, - - 2014
Case Description-A 3-year-old French Bulldog was evaluated because of acute signs of back pain and spastic paraparesis. Clinical Findings-Neuroanatomic localization indicated a lesion in the T3-L3 spinal cord segment. Magnetic resonance imaging revealed extradural spinal cord compression at the ventral right aspect of the intervertebral disk space L3-4. On the ...
Amano Hiroshi H Department of Sports Orthopedics, Osaka Rosai Hospital, 1179-3 Nagasone-cho, Kita-ku, Sakai, Osaka, 591-8025, Japan, - - 2014
The displacement and deformation of the knee meniscus significantly affect its roles; however, little is known about the displacement and deformation patterns of a torn medial meniscus. The objective of this study was to evaluate quantitatively the patterns of displacement and deformation in horizontally torn medial menisci during knee flexion. ...
Barbier Thérèse T IADI, Université de Lorraine, Nancy, France, - - 2014
Magnetic resonance imaging (MRI) is inadvisable for patients with pacemakers, as radiofrequency (RF) voltages induced in the pacemaker leads may cause the device to malfunction. Our goal is to develop a sensor to measure such RF-induced voltages during MRI safety tests. A sensor was designed (16.6 cm(2)) for measuring voltages at ...
1 2 3 4 5 6 7 8 9 10 >