Direct and comparative visualization techniques for HARDI Data

Direct and comparative visualization techniques for HARDI Data

Sonderkamp, R.F.

Botha, C.P. (mentor)

Electrical Engineering, Mathematics and Computer Science

Mediamatics

Computer Graphics

2010-10-11

DWI is an MRI imaging technique used to gain information concerning the diffusion process in tissue. Using DTI techniques, a diffusion profile can be constructed for fiber tract analysis. Recently developed HARDI techniques increase the detail to visualization on the process of diffusion. While HARDI reconstruction methods are used to model the underlying diffusion process, the HARDI signal attenuation data can be used for a better understanding of noise in DWI data. This project addresses the direct visualization of HARDI data without any intermediate processing steps between acquisition and visualization. We present new glyph shapes for direct and comparative visualization of HARDI data using the signal attenuation or ADC and a multiple linked views layout. We developed new difference metrics to create a complete comparative visualization pipeline to identify and explore areas of interest. Evaluation of our developed methods by means of a case study, indicates the techniques to be a valued addition. The comparative visualization allows for quick identification of areas of interest. The glyph representation allows for rapid exploration of local diffusion data.

HARDI
diffusion
MRI
High Angular resolution diffusion imaging
glyph
direct visualization
comparative visualization

http://resolver.tudelft.nl/uuid:1e20f67a-d211-49dd-a32b-ea19a12b2e87

2010-10-14

Student theses

master thesis

(c) 2010 Sonderkamp, R.F.