diff --git a/src/standardized/IAR_LU_segmented_3step.py b/src/standardized/IAR_LU_segmented_3step.py
index 089cb17..96c6c9e 100644
--- a/src/standardized/IAR_LU_segmented_3step.py
+++ b/src/standardized/IAR_LU_segmented_3step.py
@@ -114,5 +114,6 @@ def ivim_fit(self, signals, bvalues, **kwargs):
         results["f"] = fit_results.model_params[1]
         results["Dp"] = fit_results.model_params[2]
         results["D"] = fit_results.model_params[3]
+        results = self.D_and_Ds_swap(results)
         
-        return results
\ No newline at end of file
+        return results
diff --git a/src/standardized/IAR_LU_subtracted.py b/src/standardized/IAR_LU_subtracted.py
index 174c03a..e4e73f7 100644
--- a/src/standardized/IAR_LU_subtracted.py
+++ b/src/standardized/IAR_LU_subtracted.py
@@ -112,5 +112,6 @@ def ivim_fit(self, signals, bvalues, **kwargs):
         results["f"] = fit_results.model_params[1]
         results["Dp"] = fit_results.model_params[2]
         results["D"] = fit_results.model_params[3]
+        results = self.D_and_Ds_swap(results)
         
         return results
\ No newline at end of file
diff --git a/src/standardized/OGC_AmsterdamUMC_Bayesian_biexp.py b/src/standardized/OGC_AmsterdamUMC_Bayesian_biexp.py
index e35d07f..2b04994 100644
--- a/src/standardized/OGC_AmsterdamUMC_Bayesian_biexp.py
+++ b/src/standardized/OGC_AmsterdamUMC_Bayesian_biexp.py
@@ -101,6 +101,7 @@ def ivim_fit(self, signals, bvalues, initial_guess=None, **kwargs):
         results["D"] = fit_results[0]
         results["f"] = fit_results[1]
         results["Dp"] = fit_results[2]
+        results = self.D_and_Ds_swap(results)
 
         return results
 
diff --git a/src/standardized/OGC_AmsterdamUMC_biexp.py b/src/standardized/OGC_AmsterdamUMC_biexp.py
index bf5aac5..3a8e15c 100644
--- a/src/standardized/OGC_AmsterdamUMC_biexp.py
+++ b/src/standardized/OGC_AmsterdamUMC_biexp.py
@@ -73,5 +73,6 @@ def ivim_fit(self, signals, bvalues, **kwargs):
         results["D"] = fit_results[0]
         results["f"] = fit_results[1]
         results["Dp"] = fit_results[2]
+        results = self.D_and_Ds_swap(results)
 
         return results
\ No newline at end of file
diff --git a/src/standardized/OGC_AmsterdamUMC_biexp_segmented.py b/src/standardized/OGC_AmsterdamUMC_biexp_segmented.py
index 5cfe777..281952a 100644
--- a/src/standardized/OGC_AmsterdamUMC_biexp_segmented.py
+++ b/src/standardized/OGC_AmsterdamUMC_biexp_segmented.py
@@ -79,5 +79,6 @@ def ivim_fit(self, signals, bvalues, **kwargs):
         results["D"] = fit_results[0]
         results["f"] = fit_results[1]
         results["Dp"] = fit_results[2]
+        results = self.D_and_Ds_swap(results)
 
         return results
\ No newline at end of file
diff --git a/src/standardized/OJ_GU_seg.py b/src/standardized/OJ_GU_seg.py
index 74ec7ed..44d2b30 100644
--- a/src/standardized/OJ_GU_seg.py
+++ b/src/standardized/OJ_GU_seg.py
@@ -76,5 +76,6 @@ def ivim_fit(self, signals, bvalues=None):
         results["f"] = fit_results['f']
         results["Dp"] = fit_results['Dstar']
         results["D"] = fit_results['D']
+        results = self.D_and_Ds_swap(results)
         
         return results
\ No newline at end of file
diff --git a/src/standardized/PV_MUMC_biexp.py b/src/standardized/PV_MUMC_biexp.py
index 37783a5..25e1d14 100644
--- a/src/standardized/PV_MUMC_biexp.py
+++ b/src/standardized/PV_MUMC_biexp.py
@@ -77,5 +77,6 @@ def ivim_fit(self, signals, bvalues=None):
         results["f"] = fit_results[1]
         results["Dp"] = fit_results[2]
         results["D"] = fit_results[0]
+        results = self.D_and_Ds_swap(results)
         
         return results
diff --git a/src/standardized/PvH_KB_NKI_IVIMfit.py b/src/standardized/PvH_KB_NKI_IVIMfit.py
index 20bf8f8..608e3d7 100644
--- a/src/standardized/PvH_KB_NKI_IVIMfit.py
+++ b/src/standardized/PvH_KB_NKI_IVIMfit.py
@@ -73,5 +73,6 @@ def ivim_fit(self, signals, bvalues=None):
         results["D"] = fit_results[0][0,0,0]/1000
         results["f"] = fit_results[1][0,0,0]
         results["Dp"] = fit_results[2][0,0,0]/1000
+        results = self.D_and_Ds_swap(results)
 
         return results
diff --git a/src/standardized/TCML_TechnionIIT_SLS.py b/src/standardized/TCML_TechnionIIT_SLS.py
index 1a07c44..9e44235 100644
--- a/src/standardized/TCML_TechnionIIT_SLS.py
+++ b/src/standardized/TCML_TechnionIIT_SLS.py
@@ -92,5 +92,6 @@ def get_scalar(val):
             results["D"] = 0
             results["f"] = 0
             results["Dp"] = 0
+        results = self.D_and_Ds_swap(results)
 
         return results
\ No newline at end of file
diff --git a/src/standardized/TCML_TechnionIIT_lsq_sls_BOBYQA.py b/src/standardized/TCML_TechnionIIT_lsq_sls_BOBYQA.py
index a80bb2e..1eabd9d 100644
--- a/src/standardized/TCML_TechnionIIT_lsq_sls_BOBYQA.py
+++ b/src/standardized/TCML_TechnionIIT_lsq_sls_BOBYQA.py
@@ -89,5 +89,6 @@ def get_scalar(val):
             results["D"] = 0
             results["f"] = 0
             results["Dp"] = 0
+        results = self.D_and_Ds_swap(results)
 
         return results
\ No newline at end of file
diff --git a/src/standardized/TCML_TechnionIIT_lsq_sls_lm.py b/src/standardized/TCML_TechnionIIT_lsq_sls_lm.py
index e72a16a..a559d3a 100644
--- a/src/standardized/TCML_TechnionIIT_lsq_sls_lm.py
+++ b/src/standardized/TCML_TechnionIIT_lsq_sls_lm.py
@@ -91,5 +91,6 @@ def get_scalar(val):
             results["D"] = 0
             results["f"] = 0
             results["Dp"] = 0
+        results = self.D_and_Ds_swap(results)
 
         return results
\ No newline at end of file
diff --git a/src/standardized/TCML_TechnionIIT_lsq_sls_trf.py b/src/standardized/TCML_TechnionIIT_lsq_sls_trf.py
index bd37628..684f649 100644
--- a/src/standardized/TCML_TechnionIIT_lsq_sls_trf.py
+++ b/src/standardized/TCML_TechnionIIT_lsq_sls_trf.py
@@ -92,5 +92,6 @@ def get_scalar(val):
             results["D"] = 0
             results["f"] = 0
             results["Dp"] = 0
+        results = self.D_and_Ds_swap(results)
 
         return results
\ No newline at end of file
diff --git a/src/standardized/TF_reference_IVIMfit.py b/src/standardized/TF_reference_IVIMfit.py
index eba1630..c1db0b5 100644
--- a/src/standardized/TF_reference_IVIMfit.py
+++ b/src/standardized/TF_reference_IVIMfit.py
@@ -82,5 +82,6 @@ def ivim_fit(self, signals, bvalues=None):
         results["D"] = fit_results[0]
         results["f"] = fit_results[1]
         results["Dp"] = fit_results[2]
+        results = self.D_and_Ds_swap(results)
 
         return results
\ No newline at end of file