Fuzzy region growing of fMRI activation areas

Rodrigo A. Vivanco; Nicolino J. Pizzi

doi:10.1117/12.480176

15 May 2003 Fuzzy Region Growing of fMRI Activation Areas

Rodrigo A. Vivanco, Nicolino J. Pizzi

Proceedings Volume 5032, Medical Imaging 2003: Image Processing; (2003) https://doi.org/10.1117/12.480176
Event: Medical Imaging 2003, 2003, San Diego, California, United States

Abstract

Conventional analysis of fMRI responses in neuroimaging experiments is typically voxel-wise, i.e. independent of spatial neighbourhood information. However, valid responses are likely to be spatially clustered and connected in 3D space. Identifying spatial relations is commonly considered a pre-processing step, isotropic Gaussian filtering for noise reduction for example. Current post-processing methods consider spatial information but not temporal information; once an activation map is obtained, voxels that do not have a sufficient number of spatial neighbors are simply removed. This paper describes how we have successfully incorporated fuzzy region growing into EvIdent®, an fMRI data analysis application. The method uses spatial-temporal information to enhance spatially connected temporally related activation regions.

Citation Download Citation

Rodrigo A. Vivanco and Nicolino J. Pizzi "Fuzzy Region Growing of fMRI Activation Areas", Proc. SPIE 5032, Medical Imaging 2003: Image Processing, (15 May 2003); https://doi.org/10.1117/12.480176

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