The b matrix calculation using the anisotropic phantoms for DWI and DTI experiments
| Autor: | Krzysztof Klodowski, Artur Krzyżak |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Phantoms
Imaging Computer science Isotropy Mathematical analysis Magnetic Resonance Imaging Imaging phantom Diffusion Matrix (mathematics) Diffusion Magnetic Resonance Imaging Diffusion Tensor Imaging Distribution (mathematics) Nuclear magnetic resonance Spin echo Anisotropy Diffusion (business) Diffusion MRI Tractography |
| Zdroj: | EMBC |
| Popis: | B-matrix Spatial Distribution Diffusion Tensor Imaging (BSD-DTI) is a novel approach to imaging of the diffusion tensor. By means of the method a spatial distribution of the b matrices is determined and subsequently incorporated into diffusion tensor calculation. This paper presents experimental verification of the method. Statistical analysis of the results shows significant variation of the b matrix components through the slices and spatial b matrix maps depict inhomogeneity of the gradient distribution for MRI scanners equipped with wide bore magnets. The accuracy of the diffusion tensor determination was improved by the factor of about 3 for the isotropic phantom using the Spin Echo Diffusion sequence. |
| Databáze: | OpenAIRE |
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