diff --git a/invesalius/gui/dialogs.py b/invesalius/gui/dialogs.py
index 8c28cf1..826c9e5 100644
--- a/invesalius/gui/dialogs.py
+++ b/invesalius/gui/dialogs.py
@@ -57,3 +57,34 @@ def ShowNumberDialog(message, value=0):
 
     return 0
 
+
+class ProgressDialog(object):
+    def __init__(self):
+        self.title = "InVesalius 3"
+        self.msg = "Loading DICOM files"
+        self.maximum = 100
+        self.current = 0
+        self.style = wx.PD_CAN_ABORT | wx.PD_APP_MODAL
+        self.dlg = wx.ProgressDialog(self.title,
+                                     self.msg,
+                                     maximum = self.maximum,
+                                     parent = None,
+                                     style = wx.PD_CAN_ABORT
+                                      | wx.PD_APP_MODAL
+                                     #| wx.PD_ELAPSED_TIME
+                                     #| wx.PD_ESTIMATED_TIME
+                                     #| wx.PD_REMAINING_TIME
+                                     )
+
+    def Update(self, value):
+        self.current += value
+        (keep_going, skip) = dlg.Update(count)
+        if (not keep_going) or (skip):
+            dlg.Destroy()
+            return False
+        elif (self.current > self.max):
+            dlg.Destroy()
+            return True
+        else:
+            return self.current
+
--
libgit2 0.21.2