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Co-analysis of Brain Structure and Function using fMRI and Diffusion-weighted Imaging
Published on: November 8, 2012
Tracing superior longitudinal fasciculus connectivity in the human brain using high resolution diffusion tensor
Arash Kamali1, Adam E Flanders, Joshua Brody
1Department of Radiology, Cooper University Hospital, UMDNJ, Camden, NJ, USA.
Brain Structure & Function
|January 5, 2013
Summary
This study used high-resolution diffusion tensor imaging (DTI) to map superior longitudinal fasciculus (SLF) pathways in the human brain. Researchers visualized SLF I and superior parietal lobule connections, previously unseen with DTI.
Area of Science:
- Neuroimaging
- Neuroanatomy
- Diffusion Tensor Imaging
Background:
- Major language pathways like the superior longitudinal fasciculus (SLF) are known.
- Prior diffusion tensor imaging (DTI) studies lacked the sensitivity and resolution to fully depict SLF I and superior parietal lobule connections.
Purpose of the Study:
- To delineate the trajectory and connectivity of SLF fibers using high-resolution DTI.
- To visualize SLF I and superior parietal lobule connections within the language circuit.
Main Methods:
- Diffusion tensor tractography was performed on five healthy subjects.
- A 3.0-T scanner with high spatial resolution was utilized.
Main Results:
- The trajectory of SLF fibers was successfully delineated.
- Connectivity of SLF fibers, including SLF I and superior parietal lobule connections, was demonstrated for the first time using high-resolution DTI.
Conclusions:
- High-resolution DTI provides unprecedented detail of SLF pathways and their connections.
- This study enhances our understanding of the anatomical basis of language circuits in the healthy adult brain.
