I have the same problem. To say it is a pain is an understatement.

You can also consider the art-repair toolbox. Or if it isn't to many volumes, you could consider replacing the affected volumes with interpolation (sorry don't have a ref off hand for this, and it may be a controversial choice in some circles).

With-TR motion is a really difficult issue.

Colin

On 2 June 2014 13:33, Ananth Narayanan <[log in to unmask]> wrote:

Hello SPM Experts,

I have several subjects with severe motion causing venetian blind artifacts. I have attached typical screenshot of an example. Sometimes they are more severe, sometimes less. My question is how do I deal with them? Do I drop the volumes? If so, how can I go about dropping the timepoints in SPM?

My physical voxel size is 2.33 x 2.33 x 3.50 with TR=2.1seconds.

I searched through the archives. I couldn't find anything on dropping volumes. I would greatly appreciate it if someone would point me in the right direction. Thank you.
'Sincerely,
- Ananth