I would recommend that both images are 0.8mm isotropic, though there is no matrix size requirement (they just both need to cover the whole brain). Why do you want to use differing resolutions?
You can download my percolation here: https://balsa.wustl.edu/file/show/3VLx Peace, Matt. From: "Harms, Michael" <mha...@wustl.edu<mailto:mha...@wustl.edu>> Date: Friday, July 14, 2017 at 8:24 PM To: Megan Norr <megan.n...@berkeley.edu<mailto:megan.n...@berkeley.edu>>, "ugurb...@umn.edu<mailto:ugurb...@umn.edu>" <ugurb...@umn.edu<mailto:ugurb...@umn.edu>>, "weili_...@med.unc.edu<mailto:weili_...@med.unc.edu>" <weili_...@med.unc.edu<mailto:weili_...@med.unc.edu>>, Matt Glasser <glass...@wustl.edu<mailto:glass...@wustl.edu>> Subject: Re: HCP-style infant protocol: acquisition & parcellation questions Hi Megan, Please direct questions to the HCP-Users list, so that others can benefit from the responses. Thx. I suspect that the HCP Pipelines expect the T1 and T2 to have the same resolution and matrix, and likely won’t work if that isn’t the case. Matt can confirm. See Matt’s Nature paper for a parcellation in young-adults, based specifically on HCP data. You can find the files for the parcellation in Balsa. (You can search the HCP-User list for the exact link). It is an open question the degree to which parcellations and networks may change as a function of age. cheers, -MH -- Michael Harms, Ph.D. ----------------------------------------------------------- Conte Center for the Neuroscience of Mental Disorders Washington University School of Medicine Department of Psychiatry, Box 8134 660 South Euclid Ave. Tel: 314-747-6173 St. Louis, MO 63110 Email: mha...@wustl.edu<mailto:mha...@wustl.edu> From: Megan Norr <megan.n...@berkeley.edu<mailto:megan.n...@berkeley.edu>> Date: Friday, July 14, 2017 at 2:13 PM To: Michael Harms <mha...@wustl.edu<mailto:mha...@wustl.edu>>, "ugurb...@umn.edu<mailto:ugurb...@umn.edu>" <ugurb...@umn.edu<mailto:ugurb...@umn.edu>>, "weili_...@med.unc.edu<mailto:weili_...@med.unc.edu>" <weili_...@med.unc.edu<mailto:weili_...@med.unc.edu>> Subject: HCP-style infant protocol: acquisition & parcellation questions Hello, I am a graduate student at UC Berkeley collaborating with Moriah Thomason (Wayne State, Berkeley) on an infant neuroimaging study. I attended the HCP course last month--it was fantastic!--and I am writing because I have a few questions about running HCP-style protocols in infants (< 12 mos). At the workshop, Michael presented on scan acquisition requirements, and I saw that Drs. Ugurbil and Lin are the PIs on the "Baby Development" arm of the HCP Lifespan project. So, hopefully you are the right folks to contact! Please forward my note along if not. My first question is whether T1-weighted and T2-weighted structural scans need to have the same spatial resolution. Throughout the documentation it seems these scans simply are the same resolution (e.g., 0.8mm), but it isn't clear whether this is a requirement. Would it be possible to resample one of the structural scans to the same resolution as the other, and still run HCP pre-processing pipelines (e.g., generate myelin maps, etc.)? Next, I am wondering what the options are for brain parcellation with infant data. I think we can get a sort of "parcellation" by doing ICA with our resting state data, but I am curious whether there is a common parcellation in the works using HCP-style infant data. I'm also wondering whether there is a current parcellation or atlas that is preferred by people who are working on the HCP? Thank you very much for your time, and I look forward to hearing your thoughts! Best regards, Megan -- Megan Norr Doctoral Student, University of California, Berkeley Clinical Science, Department of Psychology Head Graduate Student Instructor Graduate Assembly of Students in Psychology (GASP) Berkeley Adult Brain Study, Hinshaw Lab megan.n...@berkeley.edu<mailto:megan.n...@berkeley.edu> _______________________________________________ HCP-Users mailing list HCP-Users@humanconnectome.org http://lists.humanconnectome.org/mailman/listinfo/hcp-users
