## Abstract This paper describes a new method for diffusion imaging of the human brain __in vivo__ that is based on a combination of diffusion‐encoding gradients with high‐speed STEAM MR imaging. The single‐shot sequence 90°‐TE/2‐90°‐TM‐(α‐TE/2‐STE)~__n__~ generates __n__ = 32–64 differently phase‐
Studies of anomalous diffusion in the human brain using fractional order calculus
✍ Scribed by Xiaohong Joe Zhou; Qing Gao; Osama Abdullah; Richard L. Magin
- Publisher
- John Wiley and Sons
- Year
- 2010
- Tongue
- English
- Weight
- 329 KB
- Volume
- 63
- Category
- Article
- ISSN
- 0740-3194
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✦ Synopsis
It is well known that diffusion-induced MR signal loss deviates from monoexponential decay, particularly at high b-values (e.g., >1500 sec/mm 2 for human brain tissues). A number of models have been developed to describe this anomalous diffusion behavior and relate the diffusion measurements to tissue structures. Recently, a new diffusion model was proposed by solving the Bloch-Torrey equation using fractional order calculus with respect to time and space (Magin et al.,
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