In ${GitRepo}/Examples/Scripts/PreFreeSurferPipelineBatch.sh change these variables to use spin echo field maps to correct T1w and T2w scans for readout distortion in the HCP LifeSpan scans:
AvgrdcSTRING="SiemensFieldMap"
To
AvgrdcSTRING=“TOPUP"
MagnitudeInputName="${StudyFolder}/${Subject}/unprocessed/3T/T1w_MPR1/${Subject}_3T_FieldMap_Magnitude.nii.gz"
To
MagnitudeInputName=“NONE"
PhaseInputName="${StudyFolder}/${Subject}/unprocessed/3T/T1w_MPR1/${Subject}_3T_FieldMap_Phase.nii.gz"
To
PhaseInputName=“NONE"
TE=“2.46"
To
TE=“NONE"
SpinEchoPhaseEncodeNegative="NONE"
To
SpinEchoPhaseEncodeNegative="${StudyFolder}/${Subject}/unprocessed/3T/T1w_MPR1/${Subject}_3T_SpinEchoFieldMap_LR.nii.gz"
SpinEchoPhaseEncodePositive="NONE"
To
SpinEchoPhaseEncodePositive="${StudyFolder}/${Subject}/unprocessed/3T/T1w_MPR1/${Subject}_3T_SpinEchoFieldMap_RL.nii.gz"
DwellTime="NONE"
To
DwellTime=“0.000580002668012” #From spin echo field map
SEUnwarpDir="NONE"
To
SEUnwarpDir=“x” #For LR/RL spin echo field map
TopupConfig="NONE"
To
TopupConfig=“${HCPPIPEDIR_Config}/b02b0.cnf”
Peace,
Matt.
P.S. Tim, and Jenn, this info should probably be posted somewhere as I’m sure this won’t be the last question about this.
From: Dr Sampada Sinha <drsampadasi...@gmail.com>
Date: Friday, February 6, 2015 at 11:07 AM To: "hcp-users@humanconnectome.org" <hcp-users@humanconnectome.org> Subject: [HCP-Users] Fwd: Regarding: No FieldMap_Magnitude in lifespan dataset Many thanks Michael for your reply! Pardon me since I am new to the HCP analysis, you mentioned about using a pair of SpinEchoFieldMap scans for correction of T1 and T2w scans. Does that mean
I make change to the PreFreeSurferPipelineBatch.sh (since thats my launch script here)? In the script in the MagnitudeInputName and PhaseInputName do I change it to NONE and in the SpinEchoFieldMaps do I change the script to
${StudyFolder}/${Subject}/unprocessed/3T/T1w_MPR1/${Subject}_3T_SpinEchoFieldMap_RL/LR.nii.gz?
What do I write in DwellTime??
Appreciate your help.
Thanks and regards,
Sampada
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- [HCP-Users] Regarding: No FieldMap_Magnitude in lifespan ... Sampada Sinha
- Re: [HCP-Users] Regarding: No FieldMap_Magnitude in ... Harms, Michael
- [HCP-Users] Fwd: Regarding: No FieldMap_Magnitud... Dr Sampada Sinha
- Re: [HCP-Users] Fwd: Regarding: No FieldMap_... Harms, Michael
- Re: [HCP-Users] Fwd: Regarding: No FieldMap_... Glasser, Matthew
- [HCP-Users] Regarding: No FieldMap_Magnitude in life... Sampada Sinha