Title :
Dimensionality and degrees of freedom in fMRI data analysis - a comparative study
Author :
Rydell, Joakim ; Borga, Magnus ; Lundberg, Peter ; Knutsson, Hans
Author_Institution :
Dept. of Biomedical Eng., Linkoping Univ., Sweden
Abstract :
Two- and three-dimensional isotropic and anisotropic spatial filters for adaptive fMRI data analysis are compared in terms of activation detection sensitivity and specificity. Evaluations using both real and artificial data are presented. It is shown that three-dimensional anisotropic filters provide superior activation detection performance.
Keywords :
biomedical MRI; brain; medical image processing; spatial filters; activation detection sensitivity; activation detection specificity; adaptive fMRI data analysis; three-dimensional anisotropic spatial filters; three-dimensional isotropic spatial filters; two-dimensional anisotropic spatial filters; two-dimensional isotropic spatial filters; Anisotropic filters; Anisotropic magnetoresistance; Biomedical engineering; Biomedical informatics; Blood; Data analysis; Sensitivity and specificity; Shape; Signal to noise ratio; Spatial filters;
Conference_Titel :
Biomedical Imaging: Nano to Macro, 2004. IEEE International Symposium on
Print_ISBN :
0-7803-8388-5
DOI :
10.1109/ISBI.2004.1398706
