Hello Anonymous,
the error stems from the fact that the mask used for lesion masking
during the normalization process must be in the space of the
native-space image to be normalized. In other words, draw/calculate your
mask on the native-space T1 and then supply it to spm. This should work.
Cheers,
Marko
SUBSCRIBE SPM Anonymous wrote:
> Hi everybody,
> i've scanned brain damaged patients for an fMRI experiment and now I'm dealing with SPManalyses. I read a lot about cost function masking and unfied segmentation normalization but I've some problems. Now I'm trying to obtain a suitable negative mask to insert in the normalization with SPM8. But if I coregister my realigned bold-images to the normalized T1 I obtain a lesion mask in the MNI space and, when I try to put it in the normalization phase, an error says that the negative mask should match the source image (the mean image). So I do not understand the exact procedure to obtain a negative lesion mask matching the source (mean) image to normalize my images. Someone has suggestions?
> Many many thank in advance.
>
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PD Dr. med. Marko Wilke
Facharzt für Kinder- und Jugendmedizin
Leiter, Experimentelle Pädiatrische Neurobildgebung
Universitäts-Kinderklinik
Abt. III (Neuropädiatrie)
Marko Wilke, MD, PhD
Pediatrician
Head, Experimental Pediatric Neuroimaging
University Children's Hospital
Dept. III (Pediatric Neurology)
Hoppe-Seyler-Str. 1
D - 72076 Tübingen, Germany
Tel. +49 7071 29-83416
Fax +49 7071 29-5473
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http://www.medizin.uni-tuebingen.de/kinder/epn/
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