Yes, you can use the siemens STC option (ie, -stc siemens)

On 2/26/2024 9:02 PM, Maria Hakonen wrote:

        External Email - Use Caution

Dear all,

Have I understood correctly that the slice delay of each slice is not needed when performing slice time correction with preprocess-sess?

I am processing an open OASIS fMRI dataset. The dataset has fMRI data in nifti format and JSON files that contain information about the data. In the instructions they say: "Slice timing is included in the JSON when available. Some original DICOM files did not have slice timing info. When slice timing information is unavailable use the ratio TR/#slices."

The data is collected with a Siemens scanner.
If the slice timing is available it seems to be interleaved:

"SliceTiming": [
        1.1025,
        0,
        1.165,
        0.059999999999999998,
        1.2250000000000001,
        0.1225,
        1.2875000000000001,
        0.1825,
        1.3474999999999999,
        0.245,
        1.4099999999999999,
        0.30499999999999999,
        1.47,
        0.36749999999999999,
        1.5325,
        0.42749999999999999,
        1.595,
        0.48999999999999999,
        1.655,
        0.55000000000000004,
        1.7175,

Could I just run slice time correction with the siemens option?

Best regards,
Maria



_______________________________________________
Freesurfer mailing list
Freesurfer@nmr.mgh.harvard.edu
https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
_______________________________________________
Freesurfer mailing list
Freesurfer@nmr.mgh.harvard.edu
https://mail.nmr.mgh.harvard.edu/mailman/listinfo/freesurfer
The information in this e-mail is intended only for the person to whom it is 
addressed.  If you believe this e-mail was sent to you in error and the e-mail 
contains patient information, please contact the Mass General Brigham 
Compliance HelpLine at https://www.massgeneralbrigham.org/complianceline 
<https://www.massgeneralbrigham.org/complianceline> .
Please note that this e-mail is not secure (encrypted).  If you do not wish to 
continue communication over unencrypted e-mail, please notify the sender of 
this message immediately.  Continuing to send or respond to e-mail after 
receiving this message means you understand and accept this risk and wish to 
continue to communicate over unencrypted e-mail. 

Reply via email to