How can I obtain the b0 (fieldmap) images from dataset?

Hi everyone,

I’m wondering if there is a standard way to obtain the fieldmap images? I have my structural (T1 weighted images) and DTI images and fMRI images.

My scans were obtained using a GE scanner. I was wondering if there was some command to allow me to obtain the fieldmap images so I can use it for preprocessing my data?

Any help would be greatly appreciated.

Thank you so much in advance.