نتایج جستجو برای: diffusion weighted imaging mri
تعداد نتایج: 727161 فیلتر نتایج به سال:
OBJECTIVE The most common finding on magnetic resonance imaging (MRI) of the brain in preterm infants at term-equivalent age is diffuse excessive high signal intensity (DEHSI) in the white matter. It is unclear whether DEHSI represents a biological abnormality. This study used diffusion-weighted imaging (DWI) to compare apparent diffusion coefficient (ADC) values in DEHSI with infants with norm...
The aim of this study was to investigate the value of T(2) (*)-weighted gradient echo imaging (GRE T(2) (*)-WI) for the detection of familial cerebral cavernous malformation (FCCM). Twenty-six members of 2 families with FCCM were examined using computed tomography (CT), conventional magnetic resonance imaging (MRI) and GRE T(2) (*)-WI sequences. We identified 12 cases of FCCM using GRE T(2) (*)...
Magnetic Resonance Imaging (MRI) of the breast is a powerful imaging tool for the characterization, diagnosis, staging, and treatment monitoring of breast cancer. Applications at clinical magnetic field strengths (≤ 3T) have been extensively described. At 7T*, substantial improvements in image quality could be provided, if technical challenges can be overcome. In this article, the authors discu...
Objective : The aim of this study was to analyse the efficacy of Diffusion Weighted MR Imaging (DWI) and Apparent Diffusion Coefficient (ADC) mapping in the diagnosis of meniscal tears in the knee. Conclusion : DWI and ADC mapping technique are fast and easily applicable with routine MRI sequences and these new MRI techniques (for the knee) depicts very important information for menisci and car...
Purpose: The aim of this study was to assess the role diffusion-weighted imaging (DWI) and conventional magnetic resonance (MRI) in differentiation benign malignant orbital lesions. 
 Materials Methods: 43 patients (27 women 16 men; mean age: 26.3±28.5) with lesions were assessed MRI DWI. apparent diffusion coefficient (ADC) measured, maximum ADC (ADCmax), (ADCmean), minimum (ADCmin), rati...
A case of 5 year old juvenile patient with dermatomyositis together with conventional and diffusion-weighted MRI images is reported. The reported case was atypical for the pattern of involvement of the accompanying oedema which was affecting distal parts of the extremities and anterior muscle groups. Electromyography was negative. The case confirmed by a pathologist demonstrates the use of diff...
In this paper, we present an affine image coregistration technique for Diffusion Tensor Magnetic Resonance Imaging (DT-MRI) data sets based on mutual information. The technique is based on a multichannel approach where the diffusion weighted images are aligned according to the corresponding acquisition gradient directions. Also, in addition to the coregistration of the DT-MRI data sets, an appr...
PURPOSE This study quantifies in vivo ischemic stroke brain injuries in rats using ultrahigh-field single-scan MRI methods to assess variations in apparent diffusion coefficients (ADCs). METHODS Magnitude and diffusion-weighted spatiotemporally encoded imaging sequences were implemented on a 21.1 T imaging system, and compared with spin-echo and echo-planar imaging diffusion-weighted imaging ...
The spleen is one of the most commonly involved organs of visceral leishmaniasis (VL). However, there were few reports about imaging findings of splenic leishmaniasis, especially regarding MRI findings. This case report describes a 45 years old male patient from Zhejiang province of southeastern China, who was admitted for persistent fever of unknown origin, with splenomegaly and multiple hypod...
Background: Diffusion-weighted imaging (DWI) is a main component of multiparametric MRI for prostate cancer detection. Recently, high b value DWI has gained more attention because of its capability for tumor characterization. Objective: To assess based on histopathological findings of transrectal ultrasound (TRUS)-guided prostate biopsy as a reference, an...
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