diff --git a/invesalius/control.py b/invesalius/control.py
index cf208c3..cfee9be 100755
--- a/invesalius/control.py
+++ b/invesalius/control.py
@@ -7,7 +7,7 @@ import data.imagedata_utils as utils
 import data.surface as surface
 import data.volume as volume
 import reader.dicom_reader as dicom
-import reader.analyze_reader as analyze
+#import reader.analyze_reader as analyze
 
 DEFAULT_THRESH_MODE = 0
 
diff --git a/invesalius/data/cursor_actors.py b/invesalius/data/cursor_actors.py
index b94aea6..2509dfe 100644
--- a/invesalius/data/cursor_actors.py
+++ b/invesalius/data/cursor_actors.py
@@ -56,9 +56,9 @@ class CursorCircle:
         Extracted equation. 
         http://www.mathopenref.com/chord.html
         """
-        xc = 0
-        yc = 0
-        z = 0
+        xc = 0.0
+        yc = 0.0
+        z = 0.0
         xs, ys, zs = self.spacing 
         orientation_based_spacing = {"AXIAL" : (xs, ys),
                                      "SAGITAL" : (ys, zs),
@@ -72,9 +72,9 @@ class CursorCircle:
             # line size
             line = sqrt(radius**2 - d**2) * 2
             # line initial x
-            xi = xc - line/2
+            xi = xc - line/2.0
             # line final
-            xf = line/2 + xc
+            xf = line/2.0 + xc
             yi = i
             for k in utils.frange(xi,xf,xs):
                 self.pixel_list.append((k, yi))
@@ -190,11 +190,11 @@ class CursorRectangle:
         seeds_xf.SetPoint1(0, 0, 0)
         seeds_xf.SetPoint2(self.x_length, 0, 0)
         
-        join_lines = self.join_lines
-        join_lines.AddInput(seeds_yi.GetOutput())
-        join_lines.AddInput(seeds_yf.GetOutput())
-        join_lines.AddInput(seeds_xi.GetOutput())
-        join_lines.AddInput(seeds_xf.GetOutput())
+        #join_lines = self.join_lines
+        #join_lines.AddInput(seeds_yi.GetOutput())
+        #join_lines.AddInput(seeds_yf.GetOutput())
+        #join_lines.AddInput(seeds_xi.GetOutput())
+        #join_lines.AddInput(seeds_xf.GetOutput())
         
         self.__calculate_area_pixels()
         
@@ -215,8 +215,15 @@ class CursorRectangle:
             self.actor.RotateY(90)
 
     def SetPosition(self, position):
-        self.position = position
-        self.actor.SetPosition(position)
+        x,y,z = position
+        x_half = self.x_length / 2.0
+        y_half = self.y_length / 2.0
+        orientation_position_based = {"AXIAL" : (x - x_half,y - y_half, z),
+                                      "CORONAL" : (x - x_half, y, z - y_half),
+                                      "SAGITAL" : (x, y - y_half, z + x_half)}
+        xc,yc,zc = orientation_position_based[self.orientation]
+        self.position = (xc,yc,zc)
+        self.actor.SetPosition(xc,yc,zc)
 
     def SetEditionPosition(self, position):
         self.edition_position = position
diff --git a/invesalius/data/viewer_slice.py b/invesalius/data/viewer_slice.py
index 5679646..0e2180a 100755
--- a/invesalius/data/viewer_slice.py
+++ b/invesalius/data/viewer_slice.py
@@ -17,7 +17,6 @@
 #    detalhes.
 #--------------------------------------------------------------------------
 
-
 import vtk
 from vtk.wx.wxVTKRenderWindowInteractor import wxVTKRenderWindowInteractor
 import wx
@@ -121,8 +120,6 @@ class Viewer(wx.Panel):
                 style.AddObserver(event,
                                   action[mode][event])
 
-
-
     def ChangeBrushSize(self, pubsub_evt):
         size = pubsub_evt.data
         self._brush_cursor_size = size
@@ -146,8 +143,6 @@ class Viewer(wx.Panel):
         self.cursor.SetColour(colour_vtk)
         self.interactor.Render()
 
-
-
     def ChangeBrushActor(self, pubsub_evt):
         brush_type = pubsub_evt.data
         self._brush_cursor_type = brush_type
@@ -208,7 +203,6 @@ class Viewer(wx.Panel):
         self.cursor.SetPosition(coord)
         self.cursor.SetEditionPosition(self.GetCoordinateCursorEdition())
         self.__update_cursor_position(coord)
-        self.ren.Render()
 
         if self._brush_cursor_op == 'Erase':
             evt_msg = 'Erase mask pixel'
@@ -221,8 +215,7 @@ class Viewer(wx.Panel):
             pixels = self.cursor.GetPixels()
             for coord in pixels:
                 ps.Publisher().sendMessage(evt_msg, coord)
-            self.interactor.Render()
-            
+        self.interactor.Render()
 
     def OnCrossMove(self, obj, evt_vtk):
         coord = self.GetCoordinate()
diff --git a/invesalius/reader/dicom_reader.py b/invesalius/reader/dicom_reader.py
index d1b1e63..34b8963 100644
--- a/invesalius/reader/dicom_reader.py
+++ b/invesalius/reader/dicom_reader.py
@@ -158,4 +158,4 @@ def GetDicomFiles(path, recursive = False):
                 result.append(files[x])
                 acquisition_modality = read_dicom.GetAcquisitionModality()
         #  TODO!!! SUPER GAMBIARRA!!! DO THIS BETTER
-    return result, acquisition_modality
\ No newline at end of file
+    return result, acquisition_modality
--
libgit2 0.21.2