add an option for nonlin_reg

Author: davidmeunier79

macapype/pipelines/full_pipelines.py

@@ -540,8 +540,9 @@ def create_brain_segment_from_mask_pipe(
 
             reg.inputs.refb_file = params_template["template_brain"]
 
-            reg.inputs.refw_file = params_template["template_head"]
-            reg.inputs.k = True
+            if "nonlin_reg" in params["reg"]:
+                reg.inputs.refw_file = params_template["template_head"]
+                reg.inputs.k = True
 
             brain_segment_pipe.connect(
                 inputnode, 'debiased_T1',