You can try WFU_BPM, which lets you calculate correlation between two
imaging modalities. It's available for download at
http://fmri.wfubmc.edu/cms/software
-Satoru
-----Original Message-----
From: SPM (Statistical Parametric Mapping) [mailto:[log in to unmask]]
On Behalf Of Igor Yakushev
Sent: Tuesday, August 26, 2008 5:44 AM
To: [log in to unmask]
Subject: [SPM] Correlations between measures of 2 imaging modalities
(PET and DTI)
Dear SPMers,
we combine two imaging modalities (PET and DTI) to investigate an
association between microstructural and metabolic alterations in
diseased
subjects.
What would be the most appropriate way to analyze such data?
May the following suggestion have sense:
a) one compares a group of diseased subjects with a group of control
subjects
within one modality (let's say DTI);
b) one extracts (raw) values from significant clusters for the diseased
subjects;
c) one conducts a multiple regression analysis on the PET data of the
same
diseased subjects introducing the values from the siginificant clusters
of the
analysis "a)" as variables.
Since measures of the two modalities are of totally different magnitudes
(but
both normally distributed), would be an SnPM (statistical nonParametric
Mapping) tool more suitable for such analysis?
Any other ideas?
Thanks,
Igor Yakushev
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