Hi,
I'm new to SPM, and using SPM5 to segmentation a set of T1-weighted MRI
images. I have several questions on how to use SPM5 for the segmentation.
I'd really appreciate if anyone can help me:
1) About the input data, can I just directly feed the MRI scan to the
segmentation module? Sometimes, the input data may be very noisy, should I
first smooth the scan first before sending it to the segment module. Is
smoothing the scan a routine preprocessing step that a user should do
before doing segmentaiton?
2) About the output data, I noticed that the outputs on both the gray
matter and the white matter are not binary image. I wonder what does
different value for each voxel mean. In addition, how can I get a binary
mask of the gray matter and white matter?
3) Does SPM5 support extracting cerebral white matter and cerebral cortex
from the white matter and gray matter respectively?
Thanks,
Kai
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