DICOM to NIFTI using DPARSF

Submitted by j_carlos on Mon, 12/23/2013 - 12:56

 Hello,

I have no much experience in f-mri analysis. I have a set of 197 files in DICOM format that I want to analyze using SPM8

First I want to make some preprocessing including  convert DICOM files to NIFTI files using DPARSF. But I have some problems using DPAERF

I used tha parameteres:
TR=2.5 (I get it form the scaner operator and doctor)
No.DCOM files=197
Slice Number= 33  ( I chose the default)
Time Points = 5.97 (=197/33) I calculated it
I chose remove first 10 time points default

First I get the error:
Error in removing first 10 time points ( so I tried withou removing any)

Then I got this error:

Your TR is 2.1
Failed  'Slice Timing'
Error using spm_slice_vol
File too small.

The following modules did not run:
Failed: Slice Timing

Can somebody give me one advise about this error
I guess it has to be with the slice number =33

thanks
 

 



Submitted by ZHANG_RESTadmin on Tue, 12/24/2013 - 12:16

 first you should confirm the TR by yourself. Try use MRIcro or any other dicom reader software, e.g., RadiAnt DICOM Viewer. Find the correct TR information.

then, you need to make sure that all your dicom files are from the same imaging sequence, e.g., all 197 dicom files are the epi-bold-fMRI data.

You can use MRIcro to check the slice number to see if it is 33.

Time Points should be equal to number of dicom files if in your data one dicom file indicates one scan of the brain. So if all the dicom files are for epi bold images, then your time point parameter should b 197.