[Mristudio-users] Diffeomorph file format

[Mark Wagshul]

Hi.  I am new to using Diffeomorph and am running into a file format problem.  When I try to run a single channel LDDMM using one of the supplied templates (JHU-MNI-SS-T1), it gives me an error saying that the template needs to be a byte image.  I thought this was supplied by the Diffeomorph software so would already be in the required format.

Anyone have an experience with this?

Thanks,

Mark

____________________
Mark Wagshul, PhD
Associate Professor
Gruss Magnetic Resonance Research Center
Albert Einstein College of Medicine
Bronx, NY 10461

Ph: 718-430-4011
FAX: 718-430-3399
Email: mark.wagshul at einstein.yu.edu<mailto:mark.wagshul at einstein.yu.edu>

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From: mristudio-users [mailto:mristudio-users-bounces at mristudio.org] On Behalf Of Ming Peng
Sent: Wednesday, July 13, 2016 11:52 AM
To: mristudio-users at mristudio.org
Subject: [Mristudio-users] How to recalculate gradient table of Philips DICOM files with 'gradient overplus' on

Hi:
  I have a dataset of DICOM files (a directory contains lots of .dcm files), and these data are collected from Philips device with "gradient overplus" option on.
  After googling, I found that the gradient table of these data should be recalculated if the "gradient overplus" option is on for Philips devices. And I found several tools:
  1 - DTI_gradient_table_creator
    http://godzilla.kennedykrieger.org/~jfarrell/software_web.htm#DTI_gradient_table_creator

     This tool can only parse data in PAR/REC format, however my data are thousands of separate .dcm files from a single patient.

  2 - DTI gradient table
      http://jp.mathworks.com/matlabcentral/fileexchange/41876-dti-gradient-table/content/dti_grad_table.m

     It only works for a multi-frame dcm file.

   My questions is:
      a - How can i recalculate the gradient table from these .dcm files ?
      b - Is there any other tools suited for this situation ?

   Thanks
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