Hi Gabriel, I don't have experience with the MR-PET yet. Why do you think there is a problem? Try running wm-anat-snr on this subject. In general, you don't want to be smoothing/denoising the anatomical doug
On 6/18/13 1:13 PM, obregon@nmr.mgh.harvard.edu wrote:
Hi,
I've started segmenting several structural scans from an MR-PET study conducted in Bay 7, and was wondering if someone has previous experience working with MPRAGE images acquired using the MR-PET coils?
The scans have a very low SNR and I am trying to figure out if this could potentially affect the performance of the automated surface reconstructions. I've scrolled through the volumes and even though the surfaces seem normal, I am somewhat skeptical about their true quality given that intermediate stages, such as the intensity normalization, seem to be failing (please find an example from one of the brain masks attached).
Is it essential to filter the raw structurals before segmenting them, and if so, are there any readily available denoising tools? Furthermore, are there any additional issues I should take into consideration?
Thanks for your help!
Gabriel
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