Cumulant expansion with localization: A new representation of the diffusion MRI signal
| العنوان: | Cumulant expansion with localization: A new representation of the diffusion MRI signal |
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| المؤلفون: | Afzali, Maryam, Pieciak, Tomasz, Jones, Derek K., Schneider, Jürgen E., Özarslan, Evren, 1976 |
| المصدر: | Frontiers in Neuroimaging. 1 |
| مصطلحات موضوعية: | diusion MRI, cumulant expansion, localization regime, kurtosis, gradient strength |
| الوصف: | Diffusion MR is sensitive to the microstructural features of a sample. Fine-scale characteristics can be probed by employing strong diffusion gradients while the low b-value regime is determined by the cumulants of the distribution of particle displacements. A signal representation based on the cumulants, however, suffers from a finite convergence radius and cannot represent the ‘localization regime' characterized by a stretched exponential decay that emerges at large gradient strengths. Here, we propose a new representation for the diffusion MR signal. Our method provides not only a robust estimate of the first three cumulants but also a meaningful extrapolation of the entire signal decay. |
| وصف الملف: | electronic |
| الوصول الحر: | https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-198026Test https://doi.org/10.3389/fnimg.2022.958680Test https://liu.diva-portal.org/smash/get/diva2:1799434/FULLTEXT01.pdfTest |
| قاعدة البيانات: | SwePub |
| DOI: | 10.3389/fnimg.2022.958680 |
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