dmirprep on data from Philips scanner - no magnitude image and effective echo spacing and/or total readout time

[pandyasneha]

Dear experts,

I am planning to run dmriprep on our scans which were acquired from the philips scanner. This dataset only includes a FieldMap, which looks like pre-unwrapped phase map and has no magnitude image with it. In addition, we are not provided with effective echo spacing and/or total readout time and don't seem to find it in dicom header either. Is it possible to run dmriprep w/o these missing data and perform epi distortion correction and co-registeration w/o the magnitude image?

Thank you,
Sneha