Adding reverse_forward_transforms and reverse_forward_invert_flags to ANTS Registration outputs.

Author: sulantha2006

nipype/interfaces/ants/registration.py

@@ -591,12 +591,18 @@ class RegistrationOutputSpec(TraitedSpec):
     forward_transforms = traits.List(
         File(exists=True), desc="List of output transforms for forward registration"
     )
+    reverse_forward_transforms = traits.List(
+        File(exists=True), desc="List of output transforms for forward registration reversed for antsApplyTransform"
+    )
     reverse_transforms = traits.List(
         File(exists=True), desc="List of output transforms for reverse registration"
     )
     forward_invert_flags = traits.List(
         traits.Bool(), desc="List of flags corresponding to the forward transforms"
     )
+    reverse_forward_invert_flags = traits.List(
+        traits.Bool(), desc="List of flags corresponding to the forward transforms reversed for antsApplyTransform"
+    )
     reverse_invert_flags = traits.List(
         traits.Bool(), desc="List of flags corresponding to the reverse transforms"
     )
@@ -1472,6 +1478,10 @@ def _list_outputs(self):
             outputs["metric_value"] = self._metric_value
         if self._elapsed_time:
             outputs["elapsed_time"] = self._elapsed_time
+
+        outputs["reverse_forward_transforms"] = outputs["forward_transforms"][::-1]
+        outputs["reverse_forward_invert_flags"] = outputs["forward_invert_flags"][::-1]
+
         return outputs
 
 

nipype/interfaces/ants/tests/test_auto_Registration.py

@@ -94,6 +94,8 @@ def test_Registration_outputs():
         elapsed_time=dict(),
         forward_invert_flags=dict(),
         forward_transforms=dict(),
+        reverse_forward_invert_flags=dict(),
+        reverse_forward_transforms=dict(),
         inverse_composite_transform=dict(extensions=None,),
         inverse_warped_image=dict(extensions=None,),
         metric_value=dict(),