diff --git a/Modules/US/USNavigation/mitkTrackedUltrasound.cpp b/Modules/US/USNavigation/mitkTrackedUltrasound.cpp
index 18fb6c8a5a..693bb0aa6b 100644
--- a/Modules/US/USNavigation/mitkTrackedUltrasound.cpp
+++ b/Modules/US/USNavigation/mitkTrackedUltrasound.cpp
@@ -1,105 +1,105 @@
 /*===================================================================
 
 The Medical Imaging Interaction Toolkit (MITK)
 
 Copyright (c) German Cancer Research Center,
 Division of Medical and Biological Informatics.
 All rights reserved.
 
 This software is distributed WITHOUT ANY WARRANTY; without
 even the implied warranty of MERCHANTABILITY or FITNESS FOR
 A PARTICULAR PURPOSE.
 
 See LICENSE.txt or http://www.mitk.org for details.
 
 ===================================================================*/
 
 #include "mitkTrackedUltrasound.h"
 #include "mitkImageReadAccessor.h"
 #include <mitkNavigationDataSmoothingFilter.h>
 #include <mitkNavigationDataDelayFilter.h>
 #include "mitkNavigationDataDisplacementFilter.h"
 #include "mitkTrackingDeviceSource.h"
 
 
 
 
 mitk::TrackedUltrasound::TrackedUltrasound( USDevice::Pointer usDevice,
                                               NavigationDataSource::Pointer trackingDevice,
                                               bool trackedUltrasoundActive )
   : AbstractUltrasoundTrackerDevice( usDevice, trackingDevice, trackedUltrasoundActive )
 {
 }
 
 mitk::TrackedUltrasound::~TrackedUltrasound()
 {
 }
 
 mitk::AffineTransform3D::Pointer mitk::TrackedUltrasound::GetUSPlaneTransform()
 {
   return m_UltrasoundDevice->GetOutput(0)->GetGeometry()->GetIndexToWorldTransform();
 }
 
 void mitk::TrackedUltrasound::GenerateData()
 {
   //Call Update auf US-Device + evtl. auf Tracker (???)
 
   if (this->GetIsFreezed()) { return; } //if the image is freezed: do nothing
 
   //get next image from ultrasound image source
   //FOR LATER: Be aware if the for loop behaves correct, if the UltrasoundDevice has more than 1 output.
   int i = 0;
-  //m_UltrasoundDevice->Update();
+  m_UltrasoundDevice->Update();
   mitk::Image::Pointer image = m_UltrasoundDevice->GetOutput(i);
   if (image.IsNull() || !image->IsInitialized()) //check the image
   {
     MITK_WARN << "Invalid image in TrackedUltrasound, aborting!";
     return;
   }
   //___MITK_INFO << "GetSpacing: " << image->GetGeometry()->GetSpacing();
 
   //get output and initialize it if it wasn't initialized before
   mitk::Image::Pointer output = this->GetOutput(i);
   if (!output->IsInitialized()) { output->Initialize(image); }
 
   //now update image data
   mitk::ImageReadAccessor inputReadAccessor(image, image->GetSliceData(0, 0, 0));
   output->SetSlice(inputReadAccessor.GetData()); //copy image data
   output->GetGeometry()->SetSpacing(image->GetGeometry()->GetSpacing()); //copy spacing because this might also change
  
   //and update calibration (= transformation of the image)
   std::string calibrationKey = this->GetIdentifierForCurrentCalibration();
   if (!calibrationKey.empty())
   {
     std::map<std::string, mitk::AffineTransform3D::Pointer>::iterator calibrationIterator
       = m_Calibrations.find(calibrationKey);
     if (calibrationIterator != m_Calibrations.end())
     {
       // transform image according to callibration if one is set
       // for current configuration of probe and depth
       m_DisplacementFilter->SetTransformation(calibrationIterator->second);
       //Setze Update auf Displacementfilter ????
     }
   }
 }
 
 void mitk::TrackedUltrasound::OnFreeze(bool freeze)
 {
   mitk::TrackingDeviceSource::Pointer trackingDeviceSource = dynamic_cast<mitk::TrackingDeviceSource*>(m_TrackingDeviceDataSource.GetPointer());
   if (trackingDeviceSource.IsNull())
   {
     MITK_WARN("TrackedUltrasound")("USDevice") << "Cannot freeze tracking.";
   }
   else
   {
     if (freeze) { trackingDeviceSource->Freeze(); }
     else { trackingDeviceSource->UnFreeze(); }
   }
 
   if (m_UltrasoundDevice.IsNull())
   {
     MITK_ERROR("TrackedUltrasound")("USDevice") << "UltrasoundDevice must not be null.";
     mitkThrow() << "UltrasoundDevice must not be null.";
   }
   m_UltrasoundDevice->SetIsFreezed(freeze);
 }