diff --git a/invesalius/constants.py b/invesalius/constants.py
index f5d0953..6fcdc48 100644
--- a/invesalius/constants.py
+++ b/invesalius/constants.py
@@ -258,6 +258,7 @@ BRUSH_OP_NAME = [_("Draw"), _("Erase"), _("Threshold")]
 
 BRUSH_COLOUR = (0,0,1.0)
 BRUSH_SIZE = 30
+BRUSH_MAX_SIZE = 100
 
 # Surface creation values. Each element's list contains:
 # 0: imagedata reformat ratio
diff --git a/invesalius/data/cursor_actors.py b/invesalius/data/cursor_actors.py
index 601da24..5dba5f9 100644
--- a/invesalius/data/cursor_actors.py
+++ b/invesalius/data/cursor_actors.py
@@ -78,6 +78,7 @@ class CursorBase(object):
         self.size = 15.0
         self.orientation = "AXIAL"
         self.spacing = (1, 1, 1)
+        self.position = (0, 0, 0)
         if vtk.vtkVersion().GetVTKVersion() > '5.8.0':
             self.mapper = vtk.vtkImageSliceMapper()
             cursor_property = vtk.vtkImageProperty()
@@ -108,6 +109,7 @@ class CursorBase(object):
     def SetPosition(self, position):
         # Overriding SetPosition method because in rectangles with odd
         # dimensions there is no half position.
+        self.position = position
         px, py, pz = position
         sx, sy, sz = self.spacing
         tx = self.actor.GetXRange()[1] - self.actor.GetXRange()[0]
diff --git a/invesalius/data/styles.py b/invesalius/data/styles.py
index 9c71407..ca93b3e 100644
--- a/invesalius/data/styles.py
+++ b/invesalius/data/styles.py
@@ -540,6 +540,11 @@ class EditorInteractorStyle(DefaultInteractorStyle):
         self.AddObserver("LeftButtonReleaseEvent", self.OnBrushRelease)
         self.AddObserver("MouseMoveEvent", self.OnBrushMove)
 
+        self.RemoveObservers("MouseWheelForwardEvent")
+        self.RemoveObservers("MouseWheelBackwardEvent")
+        self.AddObserver("MouseWheelForwardEvent",self.EOnScrollForward)
+        self.AddObserver("MouseWheelBackwardEvent", self.EOnScrollBackward)
+
     def OnEnterInteractor(self, obj, evt):
         if (self.viewer.slice_.buffer_slices[self.orientation].mask is None):
             return
@@ -683,6 +688,39 @@ class EditorInteractorStyle(DefaultInteractorStyle):
         self.viewer.slice_.apply_slice_buffer_to_mask(self.orientation)
         self.viewer._flush_buffer = False
 
+    def EOnScrollForward(self, evt, obj):
+        iren = self.viewer.interactor
+        if iren.GetControlKey():
+            mouse_x, mouse_y = iren.GetEventPosition()
+            render = iren.FindPokedRenderer(mouse_x, mouse_y)
+            slice_data = self.viewer.get_slice_data(render)
+            cursor = slice_data.cursor
+            size = cursor.radius * 2
+
+            if size < 100:
+                Publisher.sendMessage('Set edition brush size', size + 1)
+                cursor.SetPosition(cursor.position)
+                self.viewer.interactor.Render()
+            
+        else:
+            self.OnScrollForward(obj, evt)
+
+    def EOnScrollBackward(self, evt, obj):
+        iren = self.viewer.interactor
+        if iren.GetControlKey():
+            mouse_x, mouse_y = iren.GetEventPosition()
+            render = iren.FindPokedRenderer(mouse_x, mouse_y)
+            slice_data = self.viewer.get_slice_data(render)
+            cursor = slice_data.cursor
+            size = cursor.radius * 2
+
+            if size > 0:
+                Publisher.sendMessage('Set edition brush size', size - 1)
+                cursor.SetPosition(cursor.position)
+                self.viewer.interactor.Render()
+        else:
+            self.OnScrollBackward(obj, evt)
+
     def get_coordinate_cursor(self):
         # Find position
         x, y, z = self.picker.GetPickPosition()
--
libgit2 0.21.2