Re: [HCP-Users] EchoSpacing

[Glasser, Matthew]

That sounds reasonable.  It’s up to Stam whether he wants to change it or not. Peace, Matt. From: Micah Chambers <mica...@ucla.edu> Date: Wednesday, October 22, 2014 at 12:08 PM To: Matt Glasser <glass...@wusm.wustl.edu> Cc: "hcp-users@humanconnectome.org" <hcp-users@humanconnectome.org> Subject: Re: [HCP-Users] EchoSpacing The difference seems to be in DiffusionPreprocessing/scripts/basic_preproc.sh:37, it seems like multiplying by 1000 just gets undone, so it would make more sense to just keep things in seconds. On Wed, Oct 22, 2014 at 9:58 AM, Micah Chambers <mica...@ucla.edu> wrote: I have 10.352 for Dwelltime and 140 for number of phase encoding samples, which comes out to 0.00069.  On Tue, Oct 21, 2014 at 5:53 PM, Glasser, Matthew <glass...@wusm.wustl.edu> wrote: It looks like that pipeline takes the echo spacing in ms instead of the rest of HCP pipelines which take the value in seconds.  What were the raw values you entered into the equation there? Peace, Matt. From: Micah Chambers <mica...@ucla.edu> Date: Tuesday, October 21, 2014 at 7:46 PM To: "hcp-users@humanconnectome.org" <hcp-users@humanconnectome.org> Subject: [HCP-Users] EchoSpacing Hello, I have been looking at the Examples/Scripts/DiffusionPreprocessingBatch.sh script and the EchoSpacing example is 0.78, however when I actually do the math it comes out to 0.0078. I'm assuming this has something to do with the disclaimer that 'iPAT/GRAPPA factors have already been accounted for'. Could someone explain the units on this, and what the correct units are? Ultimately what I need to know is if I am going to apply a Spin Echo correction in T2 (from a Siemens scanner) would I multiply by 1000 or not?   Thanks for the help, -Micah -- Micah Chambers, M.S. Laboratory of Neuro Imaging (LONI) University of California Los Angeles 635 Charles E. Young Drive SW, Suite 225 Los Angeles, CA 90095-7334 310-206-2101 (Office) 310-206-5518 (Fax) 703-307-7692 (Cell) email: mica...@ucla.edu  _______________________________________________ HCP-Users mailing list HCP-Users@humanconnectome.org http://lists.humanconnectome.org/mailman/listinfo/hcp-users   The materials in this message are private and may contain Protected Healthcare Information or other information of a sensitive nature. If you are not the intended recipient, be advised that any unauthorized use, disclosure, copying or the taking of any action in reliance on the contents of this information is strictly prohibited. If you have received this email in error, please immediately notify the sender via telephone or return mail. -- Micah Chambers, M.S. Laboratory of Neuro Imaging (LONI) University of California Los Angeles 635 Charles E. Young Drive SW, Suite 225 Los Angeles, CA 90095-7334 310-206-2101 (Office) 310-206-5518 (Fax) 703-307-7692 (Cell) email: mica...@ucla.edu  -- Micah Chambers, M.S. Laboratory of Neuro Imaging (LONI) University of California Los Angeles 635 Charles E. Young Drive SW, Suite 225 Los Angeles, CA 90095-7334 310-206-2101 (Office) 310-206-5518 (Fax) 703-307-7692 (Cell) email: mica...@ucla.edu    The materials in this message are private and may contain Protected Healthcare Information or other information of a sensitive nature. If you are not the intended recipient, be advised that any unauthorized use, disclosure, copying or the taking of any action in reliance on the contents of this information is strictly prohibited. If you have received this email in error, please immediately notify the sender via telephone or return mail. _______________________________________________ HCP-Users mailing list HCP-Users@humanconnectome.org http://lists.humanconnectome.org/mailman/listinfo/hcp-users