diffusion-weighted imaging sequences dwi  (Bayer HealthCare Pharmaceuticals Inc)

Journal: BMC Neurology

Article Title: The right thalamic ventral posterolateral nucleus seems to be determinant for macrosomatognosia: a case report

doi: 10.1186/s12883-020-01970-3

Figure Lengend Snippet: Probabilistic connectivity of the right thalamic lesion based on Magnetic Resonance Imaging (Diffusion Tensor Imaging). This analysis is overlayed on the same T1 brain image as in the Fig. c. Blue clusters disclose areas to which the lesion was expected to be connected (darker color indicates stronger connectivity), independently from the actual number of residual fibers. a Successive sections from the lesion bottomward show connectivity with the ipsilateral occipital region. b In more superficial sections, lesion connectivity points to a superficial linear paramedial area spanning from the ipsilateral frontal cortex through the superior parietal lobule, including also the primary somatosensory cortex (middle and most right panels). More deeply and internally, the inferior and anterior precuneus regions seem to be involved (most left panel). The i nset corresponds to a mesial view further confirming the antero-posterior extension of the most superficial (frontal, parietal cortices and superior parietal lobule) and the deepest (precuneus) connections of the thalamic lesion

Article Snippet: Brain MRI (Siemens®, 3 Tesla scanner) including Diffusion Weighted Imaging (DWI) sequences (5 mm slice thickness) showed restrictions in the right lateral thalamus, the right hippocampus, the right lingual and parahippocampal gyri, and the right cerebellum (not shown).

Techniques: Magnetic Resonance Imaging, Diffusion-based Assay, Imaging

Journal: BMC Neurology

Article Title: The right thalamic ventral posterolateral nucleus seems to be determinant for macrosomatognosia: a case report

doi: 10.1186/s12883-020-01970-3

Figure Lengend Snippet: Fiber tracts connection between the right thalamic lesion area and respectively the precuneus ( a ) and the superior parietal lobule ( b ) from Brain Magnetic Resonance Imaging (Diffusion Tensor Imaging). Data were extracted from the same T1 brain image as in the Fig. c. The left panels show respectively a 3D reconstruction of the right thalamic lesion (orange) superimposed over the whole thalamic mask (in light yellow), and residual fibers. Their symmetric counterparts are shown in the right panels with the mask of the whole left thalamus (light green) and fiber tracts. White matter fibers colors code corresponds to their directions. Reduction in the number of fiber tracts through the lesion is visible for both targets of interest: 80% for the precuneus ( a ) and 90% for the superior parietal lobule ( b )

Article Snippet: Brain MRI (Siemens®, 3 Tesla scanner) including Diffusion Weighted Imaging (DWI) sequences (5 mm slice thickness) showed restrictions in the right lateral thalamus, the right hippocampus, the right lingual and parahippocampal gyri, and the right cerebellum (not shown).

Techniques: Magnetic Resonance Imaging, Diffusion-based Assay, Imaging