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DTI Quality Control - Part 4: Further reading
Analysis of diffusion images are complicated by the fact that errors can be easily hidden inside the calculated tensor data and not clearly show up in your final processed FA image. Quality control is...
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From diffusion weighted images to the diffusion tensor model: a simplified...
A guest post by Rodrigo Dennis Perea on the computational models for estimating the diffusion tensor from diffusion weighted images: "When I first started working with DTI, I had a hard time...
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Neuroscience Information Framework for DTI resources
The Neuroscience Information Framework (NIF) is an initiative by NIH blueprint to bring together all knowledge on neuroscience. Of course DTI is part of this. Find everything NIF put together on DTI...
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DTI processing with Brainvoyager
BrainVoyager QX is a powerful neuroimaging software package. It started as a tool for the analysis of anatomical and functional MRI data sets but has evolved over the years into a multi-modal analysis...
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Non-isotropic voxels; What to do and why
A recent question came up on the forum that was concerned with isotropic versus non-isotropic voxel sizes:Hi, I am trying to process some DTI data using FSL for TBSS or Voxel based comparison. I am...
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DTI Tutorial 1 - From Scanner to Tensor
Starting out with data analysis often seems like a daunting task, as there are innumerable software packages with sometimes poor documentation. To make this process easier and help you get started with...
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The diffusion tensor, and its relation to FA, MD, AD and RD
In DTI 101 we described how diffusion tensor imaging estimates brain microstructure by modeling diffusion of water in the brain. We briefly discuss that this is done by using ellipsoid or ball shaped...
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DTI Tutorial 2 - Normalization and Statistics
In our first tutorial we processed our raw images and calculated tensor images. In this second tutorial we will address how to normalize a set of diffusion tensor images (DTI) and then run statistics...
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A guide to quantifying head motion in DTI studies
It is unfortunately not common practice in diffusion imaging research to report on observed head motion of the participants in the scanner. Even though head motion can significantly influence study...
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Calculate tract based weighted means
Extracting the weighted means of individual fiber pathways can be useful when you want to quantify the microstructure of an entire white matter structure. This is specifically useful for tract based...
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