diff --git a/heudiconv/dicoms.py b/heudiconv/dicoms.py
index ef51086a..4dcfafbd 100644
--- a/heudiconv/dicoms.py
+++ b/heudiconv/dicoms.py
@@ -109,6 +109,11 @@ def create_seqinfo(mw: dw.Wrapper, series_files: list[str], series_id: str) -> S
         date=dcminfo.get("AcquisitionDate"),
         series_uid=dcminfo.get("SeriesInstanceUID"),
         time=dcminfo.get("AcquisitionTime"),
+        # ASL support
+        in_plane_phase_encoding_direction = dcminfo.get("InPlanePhaseEncodingDirection") if dcminfo.get("InPlanePhaseEncodingDirection") else None,
+        acquisition_number = dcminfo.get("AcquisitionNumber") if dcminfo.get("AcquisitionNumber") else None,
+        image_orientation_patient = tuple(dcminfo.get('ImageOrientationPatient')) if dcminfo.get('ImageOrientationPatient') else ()
+
     )
 
 
diff --git a/heudiconv/utils.py b/heudiconv/utils.py
index 9f988267..431b2869 100644
--- a/heudiconv/utils.py
+++ b/heudiconv/utils.py
@@ -69,6 +69,10 @@ class SeqInfo(NamedTuple):
     date: Optional[str]  # 24
     series_uid: Optional[str]  # 25
     time: Optional[str]  # 26
+    # additional ASL supported files
+    image_orientation_patient: Optional[tuple]
+    in_plane_phase_encoding_direction: Optional[str]
+    acquisition_number: Optional[str] 
 
 
 class StudySessionInfo(NamedTuple):