15 research outputs found
Tract-specific abnormalities in patients with bulbar onset vs. controls.
<p>Tract-specific abnormalities in patients with bulbar onset vs. controls.</p
Tract processing pipeline.
<p>Based on the diffusion and T<sub>1</sub> weighted scans, 18 WM tracts were reconstructed by TRACULA. Probability distribution maps of all tracts were reduced and binarized at 20% of their maximum value and then transformed into MTR and R<sub>2</sub>* Map space via registration-matrix (obtained by TRACULA) and rigid body registration. To prevent transformed tracts penetrating undesired regions, a conservative approach was deployed by applying a threshold of 90% of their maximum value.</p
Tract-specific abnormalities in patients with limb onset vs. controls.
<p>Tract-specific abnormalities in patients with limb onset vs. controls.</p
Group analysis results of quantitative MRI in 18 WM tracts for whole cohort.
<p>Provided are T- or Z-values.</p
Tractography of a single ALS patient obtained by TRACULA with tract description.
<p>Shown are side- (F for front, B for back), front- and top- (R for right, L for left) as well as 3D views.</p
data on white matter lesions in bipolar disorder
The data sheet contains all volumetric and demographic variables and that were used for statistical analysis in our study. Data are either continuous or binary. A comprehensive description of variables is given in the file
Regional magnetic susceptibility and R2* values.
<p>Regional magnetic susceptibility and R2* values.</p
Regional mean susceptibilities and R2* (±standard deviation).
<p>Asterisks denote significant differences between controls and patients with Parkinson’s disease (*p<0.05; **p<0.01; ***p< = 0.001).</p
Representative T1-weighted MP-RAGE image (left) with color overlay of segmented deep gray matter structures, R2* relaxation rate constant map (center) and quantitative susceptibility map (right) of a 62-years patient with PD (MDS-UPDRS 46; Hoehn & Yahr 2).
<p>High R2* rates and paramagnetic susceptibilities are found in the basal ganglia. Note the improved gray-white matter contrast on the QSM map compared to the R2* map.</p
Representative FLAIR slice of one patient.
<p>The left image shows an example of lesion areas, outlined semiautomatically by the instructed rater using a custom written IDL program (Exelis Visual Information Solutions, USA). The right image shows the native FLAIR scan.</p