diff --git a/CHANGES.md b/CHANGES.md
index ee28ca907..f6699f444 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -4,6 +4,7 @@
 
 * SIRF/STIR
   - prior value returned as double
+  - ScatterEstimation has extra methods that allow setting masks for the tail-fitting
 
 ## v3.8.0
 
diff --git a/src/xSTIR/cSTIR/cstir_p.cpp b/src/xSTIR/cSTIR/cstir_p.cpp
index 7f3d29781..6233e971b 100644
--- a/src/xSTIR/cSTIR/cstir_p.cpp
+++ b/src/xSTIR/cSTIR/cstir_p.cpp
@@ -843,6 +843,23 @@ sirf::cSTIR_setScatterEstimatorParameter
         SPTR_FROM_HANDLE(STIRImageData, sptr_id, hv);
         obj.set_attenuation_image_sptr(sptr_id);
     }
+    else if (sirf::iequals(name, "setMaskImage"))
+    {
+        SPTR_FROM_HANDLE(STIRImageData, sptr_id, hv);
+        obj.set_mask_image_sptr(sptr_id);
+    }
+    else if (sirf::iequals(name, "setMaskAcqData"))
+    {
+        SPTR_FROM_HANDLE(STIRAcquisitionData, sptr_pd, hv);
+        obj.set_mask_acq_data_sptr(sptr_pd);
+    }
+#if STIR_VERSION >= 060200
+    else if (sirf::iequals(name, "setRecomputeMaskImage"))
+    {
+        bool value = dataFromHandle<bool>(hv);
+        obj.set_recompute_mask_image(value);
+    }
+#endif
     else if (sirf::iequals(name, "setAttenuationCorrectionFactors"))
     {
         SPTR_FROM_HANDLE(STIRAcquisitionData, sptr_ad, hv);
diff --git a/src/xSTIR/cSTIR/include/sirf/STIR/stir_x.h b/src/xSTIR/cSTIR/include/sirf/STIR/stir_x.h
index 742773015..ce5c11e7a 100644
--- a/src/xSTIR/cSTIR/include/sirf/STIR/stir_x.h
+++ b/src/xSTIR/cSTIR/include/sirf/STIR/stir_x.h
@@ -902,6 +902,20 @@ The actual algorithm is described in
             stir::ScatterEstimation::set_attenuation_image_sptr(arg->data_sptr());
 #endif
         }
+        void set_mask_image_sptr(std::shared_ptr<const STIRImageData> arg)
+        {
+            stir::ScatterEstimation::set_mask_image_sptr(arg->data_sptr());
+        }
+        void set_mask_acq_data_sptr(std::shared_ptr<const STIRAcquisitionData> arg)
+        {
+            stir::ScatterEstimation::set_mask_proj_data_sptr(arg->data());
+        }
+#if STIR_VERSION >= 060200
+        void set_recompute_mask_image(bool arg)
+        {
+            stir::ScatterEstimation::set_recompute_mask_image(arg);
+        }
+#endif
 
         //! Set prefix for filenames with scatter estimates.
         /*!
diff --git a/src/xSTIR/pSTIR/STIR.py b/src/xSTIR/pSTIR/STIR.py
index 8e1e4fd5c..2584ff5f7 100644
--- a/src/xSTIR/pSTIR/STIR.py
+++ b/src/xSTIR/pSTIR/STIR.py
@@ -3608,6 +3608,15 @@ def set_attenuation_correction_factors(self, arg):
         assert_validity(arg, AcquisitionData)
         parms.set_parameter(self.handle, self.name, 'setAttenuationCorrectionFactors', arg.handle)
 
+    def set_mask_image(self, image):
+        assert_validity(image, ImageData)
+        parms.set_parameter(self.handle, self.name, 'setMaskImage', image.handle)
+
+    def set_mask_acq_data(self, arg):
+        assert_validity(arg, AcquisitionData)
+        parms.set_parameter(self.handle, self.name, 'setMaskAcqData', arg.handle)
+
+
     def set_input(self, acq_data):
         assert_validity(acq_data, AcquisitionData)
         parms.set_parameter(self.handle, self.name, 'setInput', acq_data.handle)