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Contents
1
Single subject DW-MRI Analysis
1.1
Data
1.2
Creation of a Diffusion MR (DMR) Project
1.2.1
DMR Properties
1.3
Exploring a DMR project
1.3.1
Creation of FA and Mean Diffusivity maps
1.4
DMR-VMR coregistration
1.4.1
VMR Preparation
1.4.2
Source Files
1.4.3
Source Options
1.4.4
Initial Alignment
1.4.5
Fine-Tuning Alignment
1.5
Creation of a Volume Diffusion Weighted (VDW) data set
1.6
Tensor, Diffusivity and FA calculation
1.6.1
The gradient table
1.6.2
Tensor, Mean Diffusivity and FA Computation
1.6.3
Recommended: masking the DDT data
1.6.4
Alternative Diffusion Measures
1.6.5
Color coded maps
1.7
Tensor visualization
1.8
Fiber Tracking
1.8.1
Interactive Fiber Tracking
1.8.2
Fiber tracking from seed regions (VOI/ROI)
1.8.3
Spatial Transformations of fibers
1.9
Statistical Analysis
1.9.1
VOI Statistics
2
DWI Group Analysis
2.1
Group analysis of FA/ADC maps
2.1.1
Anatomical data Preparation
2.1.2
Diffusion Data Preparation
2.1.3
Creation of talairach
FA
or
ADC
maps – starting in native space
2.1.4
Combining the maps
2.1.5
ANCOVA Analysis of FA/ADC maps
2.2
Group analysis of fiber tracts
2.2.1
Tract probability maps
3
FAQ
3.1
General
3.1.1
Incorrect color coding FA maps
3.2
Project Creation related
3.2.1
I can’t get my data into BrainVoyager, or the values are all wrong
3.2.2
The create project wizard does not work or crashes BrainVoyager
3.2.3
Fine-Tuning alignment does not work properly
3.2.4
Optional: Manual Co-registration of DMR with VMR
A
Overview of DTI Procedures
B
File types
B.1
BrainVoyager Fiber Coordinate system
B.2
Contents of the DDT file
C
GRB file for the sample data set
C.1
Format of grb files
D
Recommended DW-MRI scan protocols
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