Connectome : Default mode network

Hello MRtrix experts,

New Year Greetings to all!!

I have successfully generated a whole brain connectome using Diffusion data and fiber tracking. Thank you very much for providing such useful tools.

However, at this point, i do not want to analyse the whole brain connectome (with all the nodes and links). But, i am interested in extracting the connectome corresponding to default mode network only (i.e a sub set of the whole brain connectome).

Could you please help/suggest on how to accomplish this task?

Nice weekend!
Best
Jay