Merge pull request #121 from GalKepler/fmap_acq

Dynamically detect the acquisition label of fieldmaps

src/dicom_parser/utils/bids/header_queries.py

@@ -117,3 +117,25 @@ def find_phase_encoding(header: dict) -> str:
                 return pe
         except (AttributeError, IndexError):
             return
+
+
+def detect_associated_target(header: dict) -> str:
+    """
+    Detects the target associated with a given sequence.
+
+    Parameters
+    ----------
+    header : dict
+        Dictionary containing DICOM's header.
+
+    Returns
+    -------
+    str
+        The target's name.
+    """
+    description = header.get("SeriesDescription", "").lower()
+    if "spinechofieldmap" in description:
+        target = "rest"
+    elif "se_tfmri" in description:
+        target = "task"
+    return target

src/dicom_parser/utils/bids/sequence_to_bids.py

@@ -6,6 +6,7 @@
     find_mprage_ce,
     find_phase_encoding,
     find_task_name,
+    detect_associated_target,
 )
 
 # Dictionaries (`Dict[str, Union[str, Callable]]``) associating MR sequences
@@ -34,7 +35,7 @@
 FLAIR = {"data_type": "anat", "suffix": "FLAIR"}
 FUNCTIONAL_FIELDMAP = {
     "data_type": "fmap",
-    "acq": "func",
+    "acq": detect_associated_target,
     "dir": find_phase_encoding,
     "suffix": "epi",
 }