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Baker Justin J JJ Division of Surgical Oncology and Endocrine Surgery and The Lineberger Comprehensive Cancer Center, Department of Surgery, University of North Carolina at Chapel Hill, Campus Box 7213, 170 Manning Drive, 1150 POB, Chapel Hill, NC 27599, - - 2014
Follow-up of patients with sentinel lymph node-positive stage III melanoma uses history, physical exam, and cross-sectional imaging. The aim of this study was to evaluate positron emission tomographic (PET)/computed tomographic (CT) scans in the detection of recurrence. From 2003 to 2009, a single-institution prospective database of all cutaneous melanoma patients ...
Zhou Dayong D 1 Imaging Institute, Section of Interventional Radiology, Cleveland Clinic, 9500 Euclid Ave, Cleveland, OH - - 2014
OBJECTIVE. The purpose of this study is to retrospectively evaluate the prevalence and extent of Celect inferior vena cava (IVC) filter penetration. MATERIALS AND METHODS. All patients with Celect filters who underwent CT between 2007 and 2012 were assessed for penetration and related complications. RESULTS. Of the 690 patients with ...
Xing Huaiyong H State Key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics Chinese Academy of Sciences, Shanghai, 200050, P.R. - - 2014
Herein, ultrasmall NaGdF4 nanodots (~2 nm) with DTPA conjugation have been synthesized for efficient MR angiography. Impressively, the r1 value in MRI reaches up to 8.93 mM(-1) ·s(-1) . The ultrasmall vessel lumen of a rabbit is lighted up remarkably. After 3 h, atherosclerotic plaques could be discriminated clearly. This ...
Swenson David W DW Alpert Medical School of Brown University, Department of Diagnostic Imaging, Rhode Island Hospital, 593 Eddy Street, Providence, RI 02903, United States. Electronic address: - - 2014
Evaluate the sensitivity and specificity of pelvic ultrasound (US) and abdominopelvic computed tomography (CT) for the identification of ovarian torsion in women presenting to the emergency department with acute lower abdominal or pelvic pain. This is a retrospective study of 20 cases of ovarian torsion and 20 control patients, all ...
Luttje Mariska P MP Imaging Division, University Medical Center, Utrecht, - - 2013
Improved diagnostic sensitivity could be obtained in cancer detection and staging when individual compounds of the choline pool can be detected. Therefore, a novel coil design is proposed, providing the ability to acquire both (1) H and (31) P magnetic resonance spectroscopic imaging (MRSI) in patients with prostate cancer. A ...
Panfili Elisabetta - - 2013
The purpose of the study was to compare the artefacts produced by different hip prostheses on magnetic resonance imaging (MRI). An identical MRI protocol was used to perform a quali-quantitative in vitro evaluation of artefacts caused by different hip prosthetic materials at different field strengths: prosthesis number 1, composed of ...
Su Tzu-Pei - - 2013
We report the findings of a Meckel scan in a 19-year-old patient treated for retroperitoneal teratoma with intermittent tarry stool for 1 month. Two focal stases of radioactivity in the right upper quadrant of the abdomen were noted. SPECT/CT for localization revealed that these 2 foci were within the displaced ...
Zuo Tao T Department of Thoracic Surgery, Wuhan Medical Treatment Center, Wuhan, - - 2014
Intrathoracic meningocele associated with neurofibromatosis type 1 is quite rare. We report the case of a Chinese women with a 20-day history of right-sided chest pain and sense of pressure on the chest. Computed tomography and magnetic resonance imaging indicated a homogeneous thin-walled cystic mass in the right rear mediastinum, ...
Edjlali Myriam - - 2013
Purpose:To assess the feasibility of a selective flow-tracking cartographic procedure applied to four-dimensional (4D) flow imaging and to demonstrate its usefulness in the characterization of dural arteriovenous fistulas (DAVFs).Materials and Methods:Institutional review board approval was obtained, and all patients provided written informed consent. Eight patients (nine DAVFs) underwent 3.0-T magnetic ...
Supakul Nucharin - - 2013
OBJECTIVE. The purpose of this article is to summarize our experience with the use of ultrasound for evaluation of costochondral cartilage deformity in patients presenting with an anterior chest wall mass. MATERIALS AND METHODS. From 2007 to 2012, we identified all patients at our tertiary care children's hospital younger than ...
Li Ye - - 2013
Radiofrequency (RF) field (B 1) inhomogeneity due to shortened wavelength at high field is a major cause of magnetic resonance imaging (MRI) nonuniformity in high dielectric biological samples (e.g., human body). In this work, we propose a method to improve the B 1 and MRI homogeneity by using pre-emphasized non-uniform ...
Wimmer Thomas - - 2013
To investigate the reliability of simulations for planning pancreatic irreversible electroporation (IRE) ablations compared with computed tomography (CT) and pathology outcomes in an animal model. Simulations were performed varying treatment parameters, including field strength (1.5-2.5 kV/cm), pulse number (70-90 pulses), and pulse length (70-100 µs). Pancreatic IRE was performed in ...
Placidi Matteo P - - 2013
A series of low molecular weight lanthanide complexes were developed that have high (1) H longitudinal relaxivities (r1 ) and the potential to be used as dual frequency (1) H and (19) F MR probes. Their behavior was investigated in more detail through relaxometry, pH-potentiometry, luminescence, and multinuclear NMR spectroscopy. Fitting ...
Briganti F - - 2013
We describe a 62-year-old woman who presented with a history of ataxia, dizziness and urinary urgency. Neurological examination disclosed a positive Romberg sign, ataxia and postural instability. A magnetic resonance imaging (MRI) scan showed Chiari type 1 malformation (CM1). Forty-eight months later, the patient was clinically improved and underwent a ...
Ruiz Ana - - 2013
Magnetic resonance imaging (MRI) with magnetic resonance cholangiography (MRC) has become the radiologic standard of reference for diagnosis of primary sclerosing cholangitis (PSC). However, natural history of radiologic features of PSC is poorly known. In the current study, we aimed at analysing the course of PSC using 3D-MRC and liver ...
Hahn Barry - - 2013
Computed tomographic (CT) scanning is increasingly prevalent in emergency departments (EDs). It is a moderate- to high-radiation diagnostic technique that exposes more than 1 million children per year to unnecessary radiation. Repeat CT of the abdomen and pelvis (CTAP) among pediatric patients who return to the ED within 1 year ...
Dong Suzhen - - 2013
BACKGROUND: The cardiovascular system is the part of the fetal anatomy that most frequently suffers from congenital pathology. This study shows our preliminary experience with fetal cardiovascular magnetic resonance (CMR) to evaluate congenital cardiovascular abnormalities. METHODS: Between January 2006 and June 2011, Prenatal routine obstetric ultrasound (US), echocardiography and CMR ...
Cox Sharon G - - 2013
Magnetic resonance imaging (MRI) has become the principal tool for Wilms tumor (WT) assessment and follow-up. MRI and histopathologic findings were not congruent in 2 of the q30 scanned patients with renal masses (2008 to 2011). Three lesions thought to be WT on MRI were found to be a sclerotic ...
Ruan Leilei L Department of Plant, Soil and Microbial Sciences, Michigan State University, Hickory Corners, MI 49060, USA. - - 2013
Around 4.4 million ha of land in USDA Conservation Reserve Program (CRP) contracts will expire between 2013 and 2018 and some will likely return to crop production. No-till (NT) management offers the potential to reduce the global warming costs of CO2 , CH4 , and N2 O emissions during CRP conversion, ...
Yang Chengliang C Department of Radiation Oncology, Medical College of Wisconsin, Milwaukee, Wisconsin; Henan Cancer Hospital, Zhengzhou University, Zhengzhou, - - 2014
The purpose of this work is to explore a new adaptive radiation therapy (ART) strategy, combined "online and offline" ART, that can fully account for interfraction variations similar to the existing online ART but with substantially reduced online effort. The concept for the combined ART is to perform online ART ...
Bruckman Michael A - - 2013
To compensate for the low sensitivity of magnetic resonance imaging (MRI), nanoparticles have been developed to deliver high payloads of contrast agents to sites of disease. Here, we report the development of supramolecular MRI contrast agents using the plant viral nanoparticle tobacco mosaic virus (TMV). Rod-shaped TMV nanoparticles measuring 300×18 ...
el Barzouhi Abdelilah - - 2013
Magnetic resonance imaging (MRI) is frequently performed during follow-up in patients with known lumbar-disk herniation and persistent symptoms of sciatica. The association between findings on MRI and clinical outcome is controversial. We studied 283 patients in a randomized trial comparing surgery and prolonged conservative care for sciatica and lumbar-disk herniation. ...
Vassiou Katerina - - 2013
BackgroundAssessment of breast lesions with magnetic resonance imaging (MRI) provides a means for lesion detection and diagnosis. Proton (hydrogen-1) magnetic resonance spectroscopy ((1)H-MRS) has been proposed as a useful diagnostic technique in providing metabolic information of suspicious breast lesions.PurposeTo determine the clinical significance of in-vivo single voxel (1)H-MRS at 3T ...
Trop Isabelle - - 2013
Purpose:To evaluate and compare B(1) homogeneity for breast magnetic resonance (MR) imaging performed at 3 T with dual-source radiofrequency (RF) transmission to 1.5-T MR imaging and 3-T MR imaging with quadrature transmission.Materials and Methods:This prospective study received institutional review board approval and patients provided informed consent. Women (n = 25; ...
Kaushik Jaya Shankar - - 2012
A 6-year-old boy presented with weakness of the right upper and lower limbs, noted since infancy. Magnetic resonance imaging of the brain revealed periventricular nodular heterotopia lining the trigone and occipital horns of bilateral lateral ventricles along with herniation of the cerebellar tonsils below the foramen magnum suggestive of Chiari ...
Rodgers Christopher T - - 2012
At clinical MRI field strengths (1.5 and 3 T), quantitative maps of the longitudinal relaxation time T(1) of the myocardium reveal diseased tissue without requiring contrast agents. Cardiac T(1) maps can be measured by Look-Locker inversion recovery sequences such as ShMOLLI at 1.5 and 3 T. Cardiovascular MRI at a ...
Gass Achim - - 2012
In MS, gray and white matter that appear normal on conventional MRI may be affected, even in early phases of the disease.(1) This has been ascertained with techniques such as proton magnetic resonance spectroscopy ((1)H-MRS), which has the specificity to detect and differentiate between neuronal and glial abnormalities in the ...
Figueiredo Paula - - 2012
PURPOSE: In healthy subjects, the self-selected walking speed (SSWS) corresponds to the lowest cost of transport (CT). This study tested the hypothesis that SSWS could be determined by the work of breathing instead of the CT in patients with chronic heart failure (CHF). METHODS: Seventeen patients with CHF due to ...
Karthikesalingam A A Department of Outcomes Research, St George's Vascular Institute, St George's Hospital, London, UK. - - 2012
Previous analyses suggested that duplex ultrasonography (DUS) detected endoleaks after endovascular aneurysm repair (EVAR) with insufficient sensitivity; they did not specifically examine types 1 and 3 endoleak, which, if untreated, may lead to aneurysm-related death. In light of changes to clinical practice, the diagnostic accuracy of DUS and contrast-enhanced ultrasonography ...
Fabich Hilary T - - 2012
Advanced magnetic resonance (MR) relaxation and diffusion correlation measurements and imaging provide a means to non-invasively monitor gelation for biotechnology applications. In this study, MR is used to characterize physical gelation of three alginates with distinct chemical structures; an algal alginate, which is not O-acetylated but contains poly guluronate (G) ...
Bailey Mark J - - 2012
Configuring RE(2) O(3) nanocrystals with pseudo-2D morphologies confers substantive gains in relaxivities over equivalent spherical counterparts. The most promising arises from Gd(2) O(3) whose ionic transverse and longitudinal relaxivities were as high as r(1) = 12.7 mM(-1) s(-1) and r(2) = 17.2 mM(-1) s(-1) (dispersed in H(2) O, T = ...
Brédart Anne - - 2011
OBJECTIVE: Intensive surveillance in women at breast cancer risk is currently investigated in a French prospective, non-randomized, multicenter study, in which standard imaging - mammography±ultrasound ('Mx') and standard imaging combined with magnetic resonance imaging ('MRI') are compared with regard to perception of care and examination experience. METHODS: 1561 women were ...
Vegar-Zubovic Sandra - - 2011
The aim of the study was to determine the potential of magnetic resonance urography (MRU) in evaluation of paediatric urinary tract pathologies. PATIENTS AND METHODS.: Twenty-one paediatric urological patients were evaluated with T1, T2 prior and after and 3D gradient echo sequences after the contrast administration. Results were compared with ...
Pifarré P - - 2011
Cancer is one of the main health problems in western countries. In 2008, it represented the first cause of death in men and the second one in women. When there is a diagnosis or suspicion of cancer, performing diagnostic imaging studies has an important role in the clinical activity and ...
Kurzepa J - - 2011
Kurzepa J, Bielewicz J, Czekajska-Chehab E, Kurzepa J, Bartosik-Psujek H, Grabarska A, Stelmasiak Z. CT volume/density ratio as the marker of ischaemic brain injury. Acta Neurol Scand: 2011: 123: 310-315. © 2010 John Wiley & Sons A/S. Objectives -  We believe that the CT volume/density ratio (VDR) of infarcted area reflects ...
Teo Lynette L S - - 2011
Coarctation of the aorta (CoA) is a common congenital defect whose overall incidence is 5-8% of all congenital cardiac anomalies. Associated cardiac anomalies have been well described in previous studies examining specific subgroups of CoA patients, particularly infants and necropsy specimens. The majority of studies, conducted from the 1970s to ...
Purroy F - - 2011
diffusion-weighted magnetic resonance imaging (DWI) is a sensitive diagnostic tool for detecting acute ischaemic lesions in patients with transient ischaemic attacks (TIAs). The additional predictive value of DWI lesion patterns is not well known. two hundred and fifty-four consecutive patients with TIA underwent DWI within 7 days of symptom onset. ...
Chen Albert P - - 2010
Reporter-based cell detection and localization in vivo may become an important imaging tool with the emergence of cellular therapy. With the strong signal enhancement provided by dynamic nuclear polarization, an NMR-based reporter probe system utilizing specific enzyme expression and activity can potentially provide stable, high-resolution visualization of the cells of ...
Doubal Fergus N - - 2010
Cerebral small vessel disease (lacunar stroke and cerebral white matter hyperintensities) is caused by vessel abnormalities of unknown aetiology. Retinal vessels show developmental and pathophysiological similarities to cerebral small vessels and microvessel geometry may influence vascular efficiency. Retinal arteriolar branching angles or coefficients (the ratio of the sum of the ...
Boussel Loic - - 2011
To assess the potential of a single-session multidetector computed tomography (CT) protocol, as compared with established methods, for the etiologic work-up of acute ischemic stroke. Patients found to have recently experienced an ischemic stroke were recruited for this prospective study after institutional review board approval was obtained. Each patient was ...
Sharma M - - 2011
CTA-SI have been previously reported to correlate with CBV. We hypothesized that CTA-SI performed by modern multisection CT scanners are CBF-, not CBV-weighted. Sixty-four consecutive patients with anterior circulation stroke symptoms were selected from a stroke data base between June 2007 and January 2009. Two independent blinded readers calculated defect ...
Simoni M - - 2010
Background Leukoaraiosis (LA) is a risk factor for stroke and dementia, but the mechanism is uncertain. Further studies are required, but there is no consensus about imaging requirements. MR imaging has greater sensitivity to LA than CT, but the greater specificity of CT may have some advantages. Methods We did ...
Chauveau F - - 2010
Stroke is the third leading cause of death, after myocardial infarction and cancer, and the leading cause of permanent disability in Western countries. Although anti-inflammatory drugs have shown very promising results in preclinical rodent studies, they appeared to be ineffective against stroke in clinical trials. In this context, non-invasive detection ...
Ding Guangliang - - 2010
Using magnetic resonance imaging (MRI) protocols of T(2)-, T(2)*-, diffusion- and susceptibility-weighted imaging (T2WI, T2*WI, DWI, and SWI, respectively) with a 7T system, we tested the hypothesis that treatment of embolic stroke with erythropoietin (EPO) initiated at 24 hr and administered daily for 7 days after stroke onset has benefit ...
Leiva-Salinas Carlos C Division of Neuroradiology, Department of Radiology, University of Virginia, 1215 Lee Street-New Hospital, 1st Floor, Room 1011, PO Box 800170, Charlottesville, VA 22908, - - 2010
In this article the individual components of multimodal computed tomography and multimodal magnetic resonance imaging are discussed, the current status of neuroimaging for the evaluation of the acute ischemic stroke is presented, and the potential role of a combined multimodal stroke protocol is addressed.
Zaro-Weber Olivier - - 2010
Perfusion-weighted imaging-derived maps of time-to-maximum (Tmax) are increasingly used to identify the tissue at risk in clinical stroke studies (eg, DEFUSE and EPITHET). Using quantitative positron emission tomography (PET), we evaluated Tmax to define the penumbral flow threshold in stroke patients and compared its performance to nondeconvolved time-to-peak (TTP) maps. ...
Nagel S - - 2011
Blood-brain-barrier (BBB) breakdown due to matrix metalloproteinase (MMP) activity following stroke is often associated with cerebral edema, larger infarct volumes and bad outcome. In the present study we examined a novel MMP-inhibitor (Ro 28-2653) with high selectivity for MMP2, MMP9 and membrane type 1-MMP in an acute stroke model comparing ...
Young Kate C - - 2010
Multimodal CT, including noncontrast CT (NCCT), CT with contrast, CT angiography (CTA), and perfusion CT (CTP), is increasingly used in acute stroke patients to identify candidates for endovascular therapy. Our goal is to explore the cost-effectiveness of multimodal CT as a diagnostic test. A Markov model compared multimodal CT to ...
Alehan Füsun - - 2010
A previously healthy girl, age 3 years 9 months, presented with right-sided hemiparesis and seizures. Ischemic infarction was confirmed through magnetic resonance imaging and magnetic resonance angiography. Extensive evaluation to discover the underlying etiologies and risk factors predisposing this patient to stroke included coagulation defects, cardiac anomalies, congenital inborn metabolism ...
Henninger Nils - - 2010
Data from the European Cooperative Acute Stroke Study (ECASS) III trial demonstrated that tissue plasminogen activator given up to 4.5 h after stroke onset improves outcome and treatment guidelines support its use during this time window. Intra-arterial therapy with tissue plasminogen activator or devices is commonly used at large tertiary ...
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