| Autor: |
Julian, Pfister, Martin, Blaimer, Walter H, Kullmann, Andreas J, Bartsch, Peter M, Jakob, Felix A, Breuer |
| Rok vydání: |
2018 |
| Předmět: |
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| Zdroj: |
Magnetic resonance in medicine. 81(6) |
| ISSN: |
1522-2594 |
| Popis: |
To improve the reconstruction quality for quantitative TThe iterative reconstruction method takes advantage of the high redundancy in the smooth exponential signals using principle component analysis (PCA). Multicomponent information is preserved and allows voxel-by-voxel computation of relaxation time spectra with an inverse Laplace transform. Off-resonance effects are analytically and numerically investigated and a correction approach is presented.Single-shot IR TrueFISP in vivo measurements on healthy volunteers demonstrate the improved reconstruction performance compared to a view sharing (k-space weighted image contrast [KWIC]) reconstruction. Especially, tissue components with short apparent relaxation times TThe PCA-based reconstruction method improves the temporal accuracy and preserves multicomponent information. Spatially resolved relaxation time spectra can be obtained and allow the identification of tissue types with short, apparent relaxation times. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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