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Notni Johannes - - 2013
A killer application? Recently, fully integrated full-body positron-emission tomography (PET) and magnetic-resonance imaging (MRI) scanners were brought to market, allowing simultaneous recording of complementary 3D data sets. By using bimodal PET/MRI probes (see figure), in vivo 3D mapping of various parameters with medical relevance could become feasible.
Strauch Frederick W - - 2012
An all-resonant method is proposed to control the quantum state of superconducting resonators. This approach uses a tunable artificial atom linearly coupled to resonators, and allows for efficient routes to Fock state synthesis, qudit logic operations, and synthesis of NOON states. This resonant approach is theoretically analyzed, and found to ...
Ito Katsuhiko - - 2012
The larval head cuticle and anal plates of the silkworm mutant cheek and tail spot (cts) have chocolate-colored spots, unlike the entirely white appearance of the wild-type (WT) strain. We report the identification and characterization of the gene responsible for the cts mutation. Positional cloning revealed a cts candidate on ...
Wayakanon Praween - - 2012
Connexin 43 (Cx43) is a major gap junction (GJ) protein found in many mammalian cell types. The C-terminal (CT) domain of Cx43 has unique characteristics in terms of amino acid (aa) sequence and its length differs from other connexins. This CT domain can be associated with protein partners to regulate ...
Li Guan-Wu - - 2011
PURPOSE: To explore the evidence of regular alteration of bone quality in osteoporosis dynamically examined by MRS and micro-CT, comparing with histopathology. METHODS: Forty rabbits were allocated into two groups. Group A were used as sham. Group B underwent bilateral ovariectomy (OVX) combined with daily intramuscular methylprednisolone, underwent MR spectroscopy, ...
Li Yonggang - - 2011
Magnetic Fe(2)O(3) nanorods with low cell toxicity were successfully synthesized via a wet-chemical method. In vivo studies with a rabbit model show that the nanorods exhibit excellent T(2) signal enhancement. This work demonstrates that magnetic nanorods may provide a new type of MR enhancement agent for use in biomedical applications.
Kono Hitoshi - - 2011
  To clarify the mechanism of osteoporosis in adolescent idiopathic scoliosis (AIS), we investigated radiological and histological changes in the cervical vertebrae of a chicken thoracic scoliosis model. Forty newly hatched broiler chicks were randomly divided into four equal groups: sham-operated chickens serving as control (CON), pinealectomized chickens (PNX), sham-operated ...
Cho Eun-Jin - - 2011
OBJECTIVES:: To investigate the efficiency of magnetic resonance imaging (MRI) contrast agents employing vascular endothelial growth factor (VEGF121)/rGel conjugated MnFe2O4 nanocrystals for imaging of neovasculature using a bladder tumor model. MATERIALS AND METHODS:: VEGF121/rGel was conjugated to MnFe2O4 nanoparticles (MNPs). The targeting efficiency and detection capability of the VEGF121/rGel-MNPs were ...
Tsai Hsin-Yu - - 2011
In computed tomography (CT), the term "artifact" is applied to any systematic discrepancy between the CT numbers in the reconstructed image and the true attenuation coefficients of the object. A partial ring artifact in cardiac CT has a unique pattern and has not been previously reported in real clinical practice. ...
Sahul Zakir H - - 2011
Matrix metalloproteinases (MMPs) are known to modulate left ventricular (LV) remodeling after a myocardial infarction (MI). However, the temporal and spatial variation of MMP activation and their relationship to mechanical dysfunction after MI remain undefined. MI was surgically induced in pigs (n = 23) and cine magnetic resonance (MR) and ...
Parker Scott L - - 2011
Object Pedicle screws provide efficient stabilization along all 3 columns of the spine, but they can be technically demanding to place, with malposition rates ranging from 5% to 10%. Intraoperative electromyographic (EMG) monitoring has the capacity to objectively identify a screw breaching the medial pedicle cortex that is in proximity ...
Tsalafoutas Ioannis A - - 2011
PURPOSE: To experimentally investigate the effect of the scan field of view (SFOV) selection and table height settings on the Computed Tomography Dose Index (CTDI) and the implications concerning patient effective and skin dose. METHODS: Air-kerma length product (AKLP) measurements were carried out in a helical CT scanner using a ...
Houtz Carlton G - - 2011
Evaluate the accuracy for shoulder magnetic resonance imaging (MRI) interpretations of typical community radiologists and compare this to selected fellowship trained musculoskeletal radiologists. The MRIs of 104 shoulders of 100 consecutive different patients who had undergone shoulder arthroscopy by a single surgeon were included in this prospective study. The 104 ...
Eyibilen Ahmet - - 2011
Laryngoptosis is a rare anomaly of the larynx. The larynx is localized in a position lower than its normal position. A 15-year-old boy presented with hoarseness of voice. Physical examination showed that the larynx was in an abnormal position. There were no palpated tracheal rings. A low-pitched monotonic voice was ...
Shah Sundeep - - 2011
Littoral cell angioma (LCA) is a rare primary splenic vascular tumor arising from the littoral cells that line the splenic sinuses of the red pulp. Definitive diagnosis of this entity depends on histology and immunochemical studies, for which splenectomy is usually performed. We present three image-guided percutaneous core biopsy proven ...
Villa Chiara - - 2011
AIM: To evaluate the diagnostic ability of contrast-enhanced Magnetic Resonance Imaging (MRI) in assessment of the activity of perianal fistulas in Crohn's disease (CD) patients, compared to clinical data. MATERIALS AND METHODS: Fifty CD patients (25 men; mean[SD] age: 40.4[12.6] years) with known or suspected perianal fistulas underwent perianal space ...
Liu Shao-Cheng - - 2011
For around 50 years, various approaches to the vidian neurectomy have been advocated. This indicates that there is no single surgical technique that is superior to all others. In this report, we analyze the included angle between the posterior end of middle turbinate and the anterior opening of the vidian canal. ...
Campana S - - 2011
Biomechanical modelling of the spine is of high clinical significance, either for implant evaluation or for surgery planning. Nevertheless, assessment of patient specific material properties still remains an issue, especially the viscoelastic characteristics of lumbar intervertebral discs (IVD). MRI, a dedicated system for IVD examination, provides a signal that is ...
Sansare K - - 2011
X-rays were discovered in 1895 and since then much has been written about Wilhelm Roentgen and the events surrounding the discovery. However, there have been only scattered references in the literature about the early workers who dedicated their life, and death, to X-rays. Radiology has come of age since then. ...
Uchiyama Hitoshi T - - 2011
To comprehend figurative utterances such as metaphor or sarcasm, a listener must both judge the literal meaning of the statement and infer the speaker's intended meaning (mentalizing; Amodio and Frith, 2006). To delineate the neural substrates of pragmatic comprehension, we conducted functional magnetic resonance imaging (fMRI) with 20 normal adult ...
Rapoport Natalya - - 2011
Perfluorocarbon nanoemulsions can deliver lipophilic therapeutic agents to solid tumors and simultaneously provide for monitoring nanocarrier biodistribution via ultrasonography and/or (19)F MRI. In the first generation of block copolymer stabilized perfluorocarbon nanoemulsions, perfluoropentane (PFP) was used as the droplet forming compound. Although manifesting excellent therapeutic and ultrasound imaging properties, PFP ...
Mohammed El Romyssa - - 2011
Abstract The diagnosis and management of spontaneous otogenic pneumocephalus with literature review is described. A young sportsman experienced headache and fluctuating mass in his occiput during increased physical activity. A large extradural intracranial pneumocephalus with corresponding emphysema was imaged on a CT scan. Transmastoid identification and plugging of temporal bone ...
Pourat Nadereh - - 2011
BACKGROUND:: Chlamydia trachomatis (CT) guidelines call for annual screening of all sexually active young females. In previous studies, Medicaid health maintenance organizations (HMOs) did not consistently recommend CT and other sexually transmitted disease guidelines, but physicians with HMO practices were more likely to comply with guidelines than those without HMO ...
Guignand D - - 2011
In case of hindfoot pain, diagnosis of calcaneonavicular tarsal coalition may be missed on X-ray due to the absence of any visible synostosis. All other possible etiologies (too-long anterior process (TLAP) of the calcaneum, synchondrosis, syndesmosis) must be investigated. The literature tends to recommend imaging associating standard X-ray and CT, ...
Lim Se-Woong - - 2011
RATIONALE AND OBJECTIVES: The aim of this study was to assess the feasibility of thermally cross-linked superparamagnetic iron oxide nanoparticle contrast (TCL-SPION) in magnetic resonance (MR) imaging (MRI) for the detection of lymph node metastasis in experimental model. MATERIALS AND METHODS: B16F1 human melanoma cells were subcutaneously injected into the ...
Shu Yilai - - 2011
OBJECTIVES/HYPOTHESIS: To investigate the potential usefulness of indirect computed tomography lymphography (CT-LG) with iopamidol in the detection of cervical lymph node metastases in a VX2 rabbit tongue cancer model. STUDY DESIGN: Randomized controlled trial. METHODS: Thirty-seven rabbits were randomly divided into control (n = 7) and tongue tumor-bearing (n = ...
Bhattacharjee Shomoresh - - 2011
Recent publications have highlighted the use of fluorine 18 fluorodeoxyglucose (F-FDG) positron emission tomography (PET) as a moderately sensitive, noninvasive diagnostic test for medium- and large-vessel vasculitis. We report the atypical case of a patient with biopsy-proven granulomatous vasculitis of the aorta in addition to a non-small cell lung cancer, ...
Cramer Gregory D - - 2011
This project determined the feasibility of conducting larger studies assessing the relationship between cavitation and zygapophyseal (Z) joint gapping following spinal manipulative therapy (SMT). Five healthy volunteers (average age, 25.4 years) were screened and examined against inclusion and exclusion criteria. High-signal magnetic resonance imaging (MRI) markers were fixed to T12, ...
Sormani Mp - - 2010
Recent studies have provided evidence for using magnetic resonance imaging (MRI) active lesions as surrogate for relapses and disability progression in multiple sclerosis (MS). However, the validity of MRI metrics as surrogate endpoints in MS is controversial. Furthermore, the extrapolation of previous results to novel therapies is not warranted. We ...
Amiri Houshang - - 2011
We report cell endocytosis, drug release, NMR relaxometry and in vitro MRI studies on a novel class of superparamagnetic colloidal nanocrystal clusters (CNCs) with various biocompatible coatings. It is shown that the transverse relaxivity r2, the parameter representing the MRI efficiency in negative contrast agents, for the PVA-coated, PEGF-coated, and ...
Ray Simon - - 2010
Functional mitral regurgitation (MR) is common, clinically important, and mechanistically complex. Its assessment by echocardiography can be challenging, and particular care is needed in the quantification of severity. Echocardiographers need to be aware of the potential limitations of flow convergence and vena contracta methods in assessing severity and alert to ...
Niggemann Pascal - - 2010
The aim was to investigate the effect of patient position on the size of the cisterna chyli using positional MRI. The cisterna chyli is usually the only large lymphatic vessel that can be found on cross-sectional imaging. Not much is known about its postural behavior. However, animal studies suggest that ...
Rizzo Julie A - - 2010
As more endovascular interventions are being used in the carotid circulation, including carotid angioplasty and stenting, a reliable imaging modality is needed to follow the results. Currently, duplex ultrasonography, magnetic resonance angiography (MRA), and angiography are the main modalities used. This report presents a case of MRA and duplex ultrasonography ...
Meng Jie - - 2010
Endohedral metallofullerenes, a novel form of carbon-related nanomaterials, currently attract wide attention for their potential applications in biomedical fields such as therapeutic medicine. Most endohedral metallofullerenes are synthesized using C60 or higher molecular weight fullerenes because of the limited interior volume of fullerene. It is known that the encapsulated metal ...
Bernasconi Maurizio - - 2011
Recently, the use of systemic biomarkers to monitor and assess the clinical evolution of respiratory disease has gained interest. We investigated whether midregional proatrial natriuretic peptide (MR-proANP) predicts survival in patients with COPD when they are admitted to the hospital for exacerbation. One hundred sixty-seven patients (mean age 70 years ...
Schmitto Jan D - - 2010
Functional mitral regurgitation (MR) is a common clinical entity which will likely increase in the future due to predicted demographic changes. It is also associated with poor long-term survival. The anatomic structure of the mitral valve apparatus is complex and consists of several components, each of which can be affected ...
Tagliafico Alberto - - 2011
To compare 1.5-T and 3-T magnetic resonance (MR) imaging of the brachial plexus. Institutional review board approval and informed consent were obtained from 30 healthy volunteers and 30 consecutive patients with brachial plexus disturbances. MR was prospectively performed with comparable sequence parameters and coils with a 1.5-T and a 3-T ...
White Craig R - - 2011
The relationship between body mass (M) and metabolic rate (MR) typically accounts for most (>90%) of the inter-specific variation in MR. As such, when measurement of a species of interest is not possible, its MR can often be predicted using M. However, choosing an appropriate relationship to make such predictions ...
Srinivas G - - 2010
The magnetic behaviour in Dy(1 - x)Mm(x)Co(2) (x = 0, 0.1, 0.2, 0.3, 0.4, and 0.5; Mm = mischmetal) compounds is reported using temperature and field dependence of magnetization (M-T and M-H respectively) measurements. A strong composition dependent irreversibility is observed in both the M-T and M-H scans below the ...
Su Ho-Ming - - 2010
Mitral regurgitation (MR) can affect left ventricular diastolic parameters because of interference with regurgitation flow. This study compared left ventricular diastolic parameters between patients with and without significant MR. The MR group included 57 consecutive patients with significant MR. Fifty-seven age-, sex- and Tei index-matched patients without significant MR were ...
Fratantonio Frank - - 2010
Magnetorheological (MR) fluids contain magnetic particles dispersed within a host fluid. These materials are considered a type of "smart" fluid in that their viscoelastic properties can be controlled by varying the magnetic field intensity. MR fluids have found favor in high-end automobile applications such as the General Motors dynamic MR ...
Morris Michael F - - 2010
Computed tomography (CT) and magnetic resonance (MR) imaging are increasingly important adjuncts to echocardiography for the evaluation of mitral valve disease. The mitral valve may be involved in various acquired or congenital conditions with resultant regurgitation or stenosis, and many of these conditions can be identified with CT or MR ...
Pat Betty - - 2010
The left ventricular (LV) dilatation of isolated mitral regurgitation (MR) is associated with an increase in chymase and a decrease in interstitial collagen and extracellular matrix. In addition to profibrotic effects, chymase has significant antifibrotic actions because it activates matrix metalloproteinases and kallikrein and degrades fibronectin. Thus, we hypothesize that ...
Yuasa H - - 2010
We have enhanced magnetoresistance (MR) for current-perpendicular-to-plane giant-magnetoresistive (CPP-GMR) films with a current-confined-path nano-oxide layer (CCP-NOL). In order to realize higher purity in Cu for CCPs, hydrogen ion treatment (HIT) was applied as the CuO(x) reduction process. By applying the HIT process, an MR ratio was increased to 27.4% even ...
Altinok Deniz - - 2010
We report on an 11-year-old girl suffering from a typical attack of hemiplegic migraine with characteristic abnormalities in perfusion MR and susceptibility-weighted MR imaging findings. The imaging abnormalities were resolved 48 h after the attack. Susceptibility-weighted MR imaging findings correlated well with the MR perfusion, thus it can be used along ...
Li J - - 2010
Dendritic cells (DCs) have been shown recently to play a key role in inducing and mediating T helper type 2 (Th2) responses associated with atopic disease. These responses are mediated in part by ligation to different Toll-like receptors (TLRs) and C-type lectins, e.g. the mannose receptor (MR), depending upon the ...
Guignant Caroline - - 2010
Septic shock is a major health care problem that affects a heterogeneous population of patients. To improve sepsis management, a key point is to decrease this heterogeneity by stratifying patients according to specific criteria, such as appropriate biomarkers. As the early phase of septic shock is characterized by cardiovascular dysfunction, ...
Ciarka Agnieszka - - 2010
Restrictive mitral annuloplasty is a surgical treatment option for patients with heart failure (HF) and functional mitral regurgitation (MR). However, recurrent MR has been reported at mid-term follow-up. The aim of the present study was to identify the echocardiographic predictors of recurrent MR in patients with HF undergoing mitral annuloplasty. ...
Krüger Stefan - - 2010
Several new biomarkers are related to mortality in community-acquired pneumonia (CAP). Aim of this study was to compare new biomarkers for the prediction of short- and long-term all-cause mortality in CAP. We enrolled 728 patients (59.0 ± 18.2 yr) with CAP. Midregional proadrenomedullin (MR-proADM), midregional proatrial natriuretic peptide (MR-proANP), proarginin-vasopressin ...
Buttgereit Frank - - 2010
This 9-month open-label extension of the Circadian Administration of Prednisone in Rheumatoid Arthritis Study (CAPRA 1) investigated the long-term safety and efficacy of prednisone chronotherapy with a novel modified-release (MR) prednisone for up to 12 months. Of 288 patients with rheumatoid arthritis originally randomised to MR or immediate-release (IR) prednisone, ...
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