A new method to quantify fiber orientation similarity in registered volumes

James Dormer; Rong Jiang; Mary B. Wagner; Baowei Fei

doi:10.1117/12.2255563

10 March 2017 A new method to quantify fiber orientation similarity in registered volumes

James Dormer, Rong Jiang, Mary B. Wagner, Baowei Fei

Author Affiliations +

Proceedings Volume 10136, Medical Imaging 2017: Image Perception, Observer Performance, and Technology Assessment; 101361I (2017) https://doi.org/10.1117/12.2255563
Event: SPIE Medical Imaging, 2017, Orlando, Florida, United States

Abstract

Differences in fiber orientations between registered image volumes can be difficult to quantify. Angular errors between diffusion tensor imaging (DTI) volumes are often a combination of image registration errors and fluctuations of diffusion values that are used to determine the fiber orientations. In order to properly quantify the similarity between two images containing fiber orientation information, both displacement and angular fluctuation should be considered. We present a method to quantify fiber orientation similarity between registered images by allowing small pixel displacements in conjunction with minor angle differences. Adjustments to the allowed pixel displacement and degree of angle difference can help identify the major factor contributing to the error of fiber angles. The proposed method can provide a new metric for the evaluation of the fiber orientation difference.

Citation Download Citation

James Dormer, Rong Jiang, Mary B. Wagner, and Baowei Fei "A new method to quantify fiber orientation similarity in registered volumes", Proc. SPIE 10136, Medical Imaging 2017: Image Perception, Observer Performance, and Technology Assessment, 101361I (10 March 2017); https://doi.org/10.1117/12.2255563

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