[PDF] Top 20 Characterization of multiple sclerosis plaques with T1 weighted MR and quantitative magnetization transfer
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Characterization of multiple sclerosis plaques with T1 weighted MR and quantitative magnetization transfer
... with MR spectros- copy also tend to support conclusions regarding a pathologic substrate obtained in the present ...decreased magnetization transfer ratio and increased spectral composite peaks at ... See full document
7
Magnetization transfer effects in MR detected multiple sclerosis lesions: comparison with gadolinium enhanced spin echo images and nonenhanced T1 weighted images
... Dousset used magnetization transfer to study a model of MS in both guinea pigs and human patients (6). In the guinea pigs with experimen- tal allergic encephalomyelitis there was a mild decrease in MTR in ... See full document
12
Dirty Appearing White Matter in Multiple Sclerosis: Volumetric MR Imaging and Magnetization Transfer Ratio Histogram Analysis
... on MR im- ages, or what underlying pathologic difference be- tween NAWM and ...lesion plaques embedded, which suggest that these areas might be involved in the evolution of MS ...previous MR imaging ... See full document
6
Improved detection of enhancing and nonenhancing lesions of multiple sclerosis with magnetization transfer
... data. MR imaging was performed on a ...sagittal T1-weighted (800/20/1 [repetition time/echo time/excitations]); 5-mm sections with ...precontrast T1-weighted, with and without ... See full document
8
Gadolinium Enhanced Susceptibility Weighted Imaging in Multiple Sclerosis: Optimizing the Recognition of Active Plaques for Different MR Imaging Sequences
... METHODS: MR imaging studies of 103 patients (170 examinations) were performed using a ...demyelinating plaques on gadolinium SWI and compared them with gadolinium T1 before and after an additional ... See full document
6
T1 weighted three dimensional magnetization transfer MR of the brain: improved lesion contrast enhancement
... on T1-weighted spin-echo images (14, ...the T1-weighted spin-echo images, and the notion became established that small mildly enhanc- ing lesions without edema, such as small metastatic ... See full document
6
Measure of magnetization transfer in multiple sclerosis demyelinating plaques, white matter ischemic lesions, and edema
... 1.5-T MR imaging unit using a head coil, an 18-cm to 24-cm field of view, and a 256 3 256 ...brain MR protocol included sagittal T1-weighted images (800/20/1 [repetition time/ echo ... See full document
5
Detection of Corticospinal Tract Compromise in Amyotrophic Lateral Sclerosis with Brain MR Imaging: Relevance of the T1 Weighted Spin Echo Magnetization Transfer Contrast Sequence
... the magnetization transfer rate (MTR) may indicate the presence of structural changes in the tissue, even when SI changes are ab- sent with conventional sequences (30, ...The quantitative technique ... See full document
7
Early relapsing remitting multiple sclerosis: A magnetic resonance imaging study investigating normal appearing brain tissue and lesion changes and their relationship to clinical disability
... remitting multiple sclerosis (MS) using radiological and clinical ...various MR imaging sequences in order to assess both lesions and normal appearing brain tissue ...used quantitative ... See full document
205
Sensitivity of enhanced MR in multiple sclerosis: effects of contrast dose and magnetization transfer contrast
... the MR examination was split into two sessions, separated by an interval of 12 to 24 ...noncontrast T1-weighted (560/14/2) CSE images with and without the MT pulse; and two contrast-enhanced ... See full document
5
Single dose gadolinium with magnetization transfer versus triple dose gadolinium in the MR detection of multiple sclerosis lesions
... MT-prepared T1-weighted images. Con- trast-enhanced MR imaging included T1-weighted spin- echo (500 – 620/15–20/2) sequences with MTC added only to the single-dose studies or ... See full document
7
Characterization of White Matter Lesions in Multiple Sclerosis and Traumatic Brain Injury as Revealed by Magnetization Transfer Contour Plots
... Contour plot analysis can also aid in the char- acterization of white matter lesions. Lower MTRs, such as those seen within lesions that are hypoin- tense on T1-weighted images, have been thought to ... See full document
5
Evolution of Multiple Sclerosis Lesions on Serial Contrast Enhanced T1 Weighted and Magnetization Transfer MR Images
... cient corresponds to edema (34, 35). To investigate further the hypothesis that the decreased and par- tially reversible MTR and the increased diffusion coefficient seen in some acute MS plaque are due to the presence of ... See full document
7
Correlation of Multiple Sclerosis Measures Derived from T2 Weighted, T1 Weighted, Magnetization Transfer, and Diffusion Tensor MR Imaging
... diffusion- weighted MR imaging ...full characterization of diffusion can only be found in terms of a tensor (21), a 3 3 3 matrix where the on-diagonal elements rep- resent the diffusion coefficients ... See full document
6
Enhanced and unenhanced MR with magnetization transfer in multiple sclerosis
... of multiple sclerosis (MS) is judged on magnetic resonance (MR) images by plaque enhancement after intravenous injection of contrast material (1, ...Delayed MR imaging and administration of ... See full document
6
Patterns of lesion development in multiple sclerosis: longitudinal observations with T1 weighted spin echo and magnetization transfer MR
... enhanced-CR, T1-CR, size, and MTR for appearance on unenhanced T1-weighted images were tested using a multifactorial analysis of variance (ANOVA) model (F is the variance ...(r). Multiple ... See full document
9
In Vivo Detection of Cortical Plaques by MR Imaging in Patients with Multiple Sclerosis
... None of the healthy volunteers presented with cortical lesions. Cortical lesions were found in 13 (59.1%) patients whose individual demographic, clinical, and MR imaging character- istics are listed in Table 2. ... See full document
7
Magnetization transfer effects on T1 weighted three dimensional gradient echo MR images of a phantom simulating enhancing brain lesions
... tumors, we analyzed the impact of gadolinium concentra- tion and the section excitation flip angle on the simulated lesion-to-background white matter contrast. In the rele- vant literature (1–14), the most frequently ... See full document
13
Quantitative evaluation in combination with nonquantitative evaluation in early patellar cartilage osteoarthritis at 3.0 T
... with sclerosis of subchondral bone, and so on. Lack of the quantitative evaluation between normal and OA cartilage is a ...of quantitative evaluation with K-L scores in the application of early OA is ... See full document
11
Association between Signal Hyperintensity on T1 Weighted MR Imaging of Carotid Plaques and Ipsilateral Ischemic Events
... underwent multiple MR imaging that hyperintensity was maintained over a period of months, and MPRAGE high sig- nals may offer an indicator of risk for subsequent ... See full document
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