[PDF] Top 20 Diffusion Tensor MR Imaging and Fiber Tractography: Technical Considerations
Has 10000 "Diffusion Tensor MR Imaging and Fiber Tractography: Technical Considerations" found on our website. Below are the top 20 most common "Diffusion Tensor MR Imaging and Fiber Tractography: Technical Considerations".
Diffusion Tensor MR Imaging and Fiber Tractography: Technical Considerations
... additional considerations that are specific to DTI. Because diffusion imaging is an SNR-limited technique and DTI measures such as fractional anisotropy (FA) and relative anisotropy (RA) are more ... See full document
10
Diffusion Tensor MR Imaging and Fiber Tractography: Theoretic Underpinnings
... iffusion MR imaging of the brain was first adopted for use in clinical neuroradiology during the early 1990s and was found to have immediate utility for the evaluation of sus- pected acute ischemic ...of ... See full document
10
Diffusion tensor imaging and tractography of the sciatic and femoral nerves in healthy volunteers at 3T
... Diffusion tensor imaging (DTI) is an advanced magnetic resonance (MR) imaging technique, which provides in- formation about the microstructure of nerve fibers non- invasively ... See full document
8
Assessment of White Matter Tract Damage in Patients with Amyotrophic Lateral Sclerosis: A Diffusion Tensor MR Imaging Tractography Study
... the diffusion tensor eigenvalue analysis, it appears that MD and FA changes are secondary to an increased diffu- sion perpendicular to WM fibers (as indicated by an increased radial D) rather than decreased ... See full document
5
Incorporating Functional MR Imaging into Diffusion Tensor Tractography in the Preoperative Assessment of the Corticospinal Tract in Patients with Brain Tumors
... DT tractography for fiber tracking of the motor tracts is feasible not only in the healthy brain but also when intra-axial lesions are ...anatomic MR imaging or from conventional DT ... See full document
8
Principles and Limitations of Computational Algorithms in Clinical Diffusion Tensor MR Tractography
... the tractography algorithms reported to date lies in the difficulty of obtaining systematic verification for the human brain in ...successful tractography results compared with manganese-enhanced ... See full document
11
White Matter Abnormalities Are Related to Microstructural Changes in Preterm Neonates at Term Equivalent Age: A Diffusion Tensor Imaging and Probabilistic Tractography Study
... studied fiber tracts in very preterm infants by tractogra- phy and found no association between tract lengths and the degree of white matter ...at MR imaging, but those DTI values were independent of ... See full document
7
Diffusion Tensor MR Imaging Tractography of the Pyramidal Tracts Correlates with Clinical Motor Function in Children with Congenital Hemiparesis
... To segment the pyramidal tract, we drew 3 filtering regions of interest by using prior anatomic knowledge: the entire caudal cerebral peduncle, posterior two thirds of the posterior limb of the internal capsule at the ... See full document
7
Diffusion Tensor Imaging and Fiber Tractography in Children with Craniosynostosis Syndromes
... study was longer; therefore, we included more patients. In this study, we added 6 patients with Apert syndrome, 2 with Crouzon- Pfeiffer syndrome, 2 with Muenke syndrome, and 5 with complex craniosynostosis. Sixty-nine ... See full document
7
Cost Analysis of Diffusion Tensor Imaging and MR Tractography of the Brain
... values. Tractography was performed using a region-growing algorithm that merges voxels having similar tensor direction in neighboring voxels of the seeding ROI ...voxel-to-voxel fiber bending, as has ... See full document
11
FLAIR Diffusion Tensor MR Tractography: Comparison of Fiber Tracking with Conventional Imaging
... matter tractography, which could possibly be affected with reduced ...the diffusion tensor (26, ...successful fiber tracking (9) and must therefore be ...say, tractography with FLAIR ... See full document
7
Lessons of ALS imaging: Pitfalls and future directions A critical review
... The challenges of recruiting large patient cohorts in ALS imaging studies are obvious due to disease-specific factors such as orthopnoea, dyspnoea, and sialorrhoea. Yet, despite these recognised limitations, ... See full document
31
Diffusion tensor magnetic resonance imaging and fibre tractography in the brain
... In particular, the limitations and requirements of DT-MRI fibre tracking have not been fully assessed. Fibre tracking relies on the use of good quality diffusion-weighted images, together with a suitable algorithm ... See full document
173
<p>Diffusion Tensor Imaging And Tractography In Autistic, Dysphasic, And Healthy Control Children</p>
... Prede fi ned parameters of the algorithm were set to 5,000 fi ber streamlines, and the curvature threshold was set at 0.2, which means a minimal angle, approximately 80 degrees. The minimum length threshold was not ... See full document
10
MR Diffusion Tensor Imaging and Fiber Tracking in Inflammatory Diseases of the Spinal Cord
... In our study, we decided to investigate the use of this pa- rameter in myelitis. In the spine, surrounding bone causes susceptibility artifacts. DTI MR imaging yields voxel signal- intensity attenuation on ... See full document
5
Quantitative analysis and comparison of diffusion tensor imaging tractography algorithms
... Section IV presents the different analysis methods performed: a comparison between two tractography algorithms using a synthetic DTI dataset subsection a, quantification and measures of [r] ... See full document
6
Selective frontal neurodegeneration of the inferior fronto-occipital fasciculus in progressive supranuclear palsy (PSP) demonstrated by diffusion tensor tractography
... grouped with other tau-positive frontotemporal demen- tia disorders. The diverse presentations make clinical diagnosis difficult, especially in early stages of the dis- ease, and there is a need for additional tools to ... See full document
8
Evaluations of diffusion tensor image registration based on fiber tractography
... However, there are some problems with the existing evaluation techniques. In 2009, Klein et al. [13] evaluated performances of registrations for anatomic regions and the whole voxels of brain using the overlap rates on ... See full document
20
Diffusion Tensor MR Imaging Reveals Persistent White Matter Alteration after Traumatic Brain Injury Experienced during Early Childhood
... In the parent project, consecutive admissions of children with mild, moderate, and severe TBI or with OI not involving the central ner- vous system were recruited at ages 36 – 84 months (at the time of injury). Severity ... See full document
7
Variability of Homotopic and Heterotopic Callosal Connectivity in Partial Agenesis of the Corpus Callosum: A 3T Diffusion Tensor Imaging and Q Ball Tractography Study
... Q-ball fiber tracking algorithms by using similar tracking ...multiple fiber populations within a single voxel, they are better able to track fibers that have a common origin but diverge as they cross the ... See full document
8
Related subjects