Paul,

You don't need to reprocess the data with v4 to use qdec. It is ok to run the -qcache option in v4 on v3-processed data, so your approach is fine.

Nick

On Sun, 2008-01-13 at 16:49 -0800, Paul Greenberg wrote:

Hi all,

Will the QDEC program and the associated preprocessing steps (recon-all / -qcache) run correctly with data from Freesurfer version 3.0.5, or do all data sets first need to be reprocessed with version 4.0.2? I downloaded stable version 4.0.2, ran recon-all /- qcache on my previous data, and wanted to know if this approach was correct.

Thanks much, Paul