نتایج جستجو برای: mri نمای dw

تعداد نتایج: 113134  

2015
Antonella Meloni Mari Giovanna Neri Maria Chiara Resta Massimiliano Missere Antonino Vallone Vincenzo Positano Silvia Macchi Crocetta Argento Daniele De Marchi Alessia Pepe

Results Three groups of patients were identified: 27 patients (13 females, mean age 40.12±10.31 years) treated with desferioxamine (DFO mean dosage 37.52±8.69 mg/kg/ die), 23 patients (14 females, mean age 34.73±10.67 years) treated with deferiprone (DFPdosage 71.70 ±14.46mg/kg/die) and 14 patients (9 females, mean age 36.63±10.92 years) treated with deferasirox (DFX mean dosage 27.75±5.04 mg/k...

2017

Researchers in South Korea previously reported that diffusion-weighted magnetic resonance imaging (DW-MRI) could be used to predict neurologic outcomes before targeted temperature management (TTM) after return of spontaneous circulation (ROSC) from cardiac arrest. In a new study, the same team of researchers compared the efficacy of brain computed tomography (CT) and DW-MRI to predict neurologi...

2015
Han-Mei Zhang Ying-Hua Wu Qi Gan Xiao Lyu Xiang-Lan Zhu Min Kuang Rong-Bo Liu Zi-Xing Huang Fang Yuan Xi-Jiao Liu Bin Song

BACKGROUND The aim of this study was to assess the performance of apparent diffusion coefficient (ADC) measurement obtained with diffusion-weighted magnetic resonance imaging (DW-MRI) to distinguish renal cell carcinomas (RCCs) from small benign solid renal tumors (≤ 4 cm). METHODS In this cross-sectional study, 49 consecutive patients with histopathologically confirmed small solid renal tumo...

Journal: :Stroke 2001
K Szabo R Kern A Gass J Hirsch M Hennerici

BACKGROUND AND PURPOSE Diffusion-weighted (DW) MRI is a sensitive method that facilitates early stroke pattern identification. There are limited data about the influence of stenosis grade on the development of particular stroke patterns in internal carotid artery (ICA) disease. We therefore investigated the lesion patterns on DW MRI in acute stroke patients with ICA disease. METHODS DW MRI wa...

2007
Angelos Barmpoutis Bing Jian Baba C. Vemuri

In DiffusionWeighted Magnetic Resonance Image (DW-MRI) processing a 2 order tensor has been commonly used to approximate the diffusivity function at each lattice point of the DW-MRI data. It is now well known that this 2-order approximation fails to approximate complex local tissue structures, such as fibers crossings. In this paper we employ a 4 order symmetric positive semi-definite (PSD) ten...

Journal: :Diagnostic and interventional radiology 2010
Ozgür Kılıçkesmez Aliye Soylu Nurgül Yaşar Tuna Demirbaş Can Dolapçıoğlu Sule Poturoğlu Isa Sevindir Tan Cimilli

PURPOSE We investigated the relationship between the apparent diffusion coefficient (ADC) values of the colonic wall and the pathologic pericolonic lymph nodes (PCLNs) and inflammatory activity in ulcerative colitis patients by diffusion-weighted magnetic resonance imaging (DW-MRI). MATERIALS AND METHODS A total of 28 ulcerative colitis patients (9 endoscopically active, 10 subacute and 9 in ...

Journal: :Clinical imaging 2015
Mehtap Balaban Ilkay S Idilman Huseyin Toprak Ozlem Unal Ali Ipek Ercan Kocakoc

The aim was to determine the utility of diffusion-weighted magnetic resonance imaging (DW MRI) and apparent diffusion coefficient (ADC) measurements in differentiation of endometrioma and hemorrhagic ovarian cyst. A total of 24 female patients who underwent pelvic MRI with an initial diagnosis of ovarian cyst were included in the study. The final diagnosis was endometrioma in 12 patients and he...

2011
Gemma Louise Morgan Hui Zhang Brandon J. Whitcher Daniel C. Alexander

We present a Bayesian framework for the group-wise comparison of the regional variation of tissue parameters estimated from diffusion-weighted MRI (DW-MRI) over an anatomical region of interest (ROI). The regional variation model (RVM) fits a geometric model of parameter variation directly to the DW-MRI signals which captures the spatial changes in a natural way as well as reducing the effects ...

2009
Els Fieremans Yves De Deene Steven Baete Ignace Lemahieu

A gold standard for the validation of diffusion weighted magnetic resonance imaging (DW-MRI) in brain white matter (WM) is essential for clinical purposes but still not available. Synthetic anisotropic fiber bundles are proposed as phantoms for the validation of DW-MRI because of their well-known structure, their long preservability and the possibility to create complex geometries such as curve...

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