ENH: issue a warning when number of suffixes isnt twice the number of echoes

Author: yarikoptic

heudiconv/convert.py

@@ -550,7 +550,14 @@ def save_converted_files(res, item_dicoms, bids_options, outtype, prefix, outnam
             # _sbref sequences reconstructing magnitude and phase generate
             # two NIfTI files IN THE SAME SERIES, so we cannot just add
             # the suffix, if we want to be bids compliant:
-            if bids_file and this_prefix_basename.endswith('_sbref') and len(suffixes)>len(echo_times):
+            if bids_file and this_prefix_basename.endswith('_sbref') \
+                    and len(suffixes) > len(echo_times):
+                if len(suffixes) != len(echo_times)*2:
+                    lgr.warning(
+                        "Got %d suffixes for %d echo times, which isn't "
+                        "multiple of two as if it was magnitude + phase pairs",
+                        len(suffixes), len(echo_times)
+                    )
                 # Check to see if it is magnitude or phase reconstruction:
                 if 'M' in fileinfo.get('ImageType'):
                     mag_or_phase = 'magnitude'