An interactive ROI tool for DTI fiber tracking

Florian Weiler; Horst K. Hahn

doi:10.1117/12.878120

1 March 2011 An interactive ROI tool for DTI fiber tracking

Florian Weiler, Horst K. Hahn

Proceedings Volume 7964, Medical Imaging 2011: Visualization, Image-Guided Procedures, and Modeling; 796437 (2011) https://doi.org/10.1117/12.878120
Event: SPIE Medical Imaging, 2011, Lake Buena Vista (Orlando), Florida, United States

Abstract

Fiber tracking is one of the clinically most well-established analysis techniques for Diffusion Tensor Imaging data (DTI). It facilitates the reconstruction of anatomically known white matter structures by tracing trajectories on a tensor field obtained from diffusion weighted MR images. A crucial step when using this technique is the placement and shape of regions-of-interest (ROIs) to identify the structures in question. Typically, free-hand contours or simple geometric shapes like rectangles are placed in regions, where a given structure can be identified using the color coded DTI representation. However, such approaches result in a high variability of the resulting tracts and usually require additional filtering and placement of multiple ROIs. Also, the generation of accurate ROIs using a free-hand tool requires a significant amount of interaction time. We present a method which allows for interactive generation of anatomically meaningful ROIs for DTI fiber tracking based on geometric similarities of the underlying tensor field. The method works similar to the magicwand tool known from image editing software tools to create reasonable, fully image based ROIs using a single mouseclick.

Citation Download Citation

Florian Weiler and Horst K. Hahn "An interactive ROI tool for DTI fiber tracking", Proc. SPIE 7964, Medical Imaging 2011: Visualization, Image-Guided Procedures, and Modeling, 796437 (1 March 2011); https://doi.org/10.1117/12.878120

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