diff --git a/atlas/api.py b/atlas/api.py
index 97b44a72..c979b1ed 100644
--- a/atlas/api.py
+++ b/atlas/api.py
@@ -106,7 +106,7 @@ def import_dicoms_helper(request, case_id: int | None = None):
 
     data = defaultdict(list)
     for d in dicoms:
-        tags = d.get_basic_dicom_tags()
+        tags = d.basic_dicom_tags
 
         data[tags["SeriesInstanceUID"]].append((d, tags))