[Mrtrix-discussion] Question about filter_tracks command

[Daniel Lumsden]

Dear All

I'm interested in using the improved resolution from track density images to help improve my ROI generation to select tracks from a whole brain tractography .tck file.

I can define, e.g., the PLIC much more sharply from the track density image generated from whole-brain tractography much more easily then from the standard colour coded FA maps. The orientation of the track density image depends upon the -template image supplied for tracks2prob step when generated. If I use the FA maps as the template, does this automatically put the ROI drawn from the resultant track density maps in diffusion space? If so I presume I can use these ROI to directly filter the streamlines I'm interested from the whole brain tractography .tck file without applying any transformation? 

Many thanks in advance

Dan
 		 	   		  
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