disconnect(mTree, SIGNAL(itemSelectionChanged()), this, SLOT(SelectedItemChangedInTree()));
disconnect(mCheckBoxShow, SIGNAL(toggled(bool)), this, SLOT(VisibleROIToggled(bool)));
disconnect(mOpacitySlider, SIGNAL(valueChanged(int)), this, SLOT(OpacityChanged(int)));
disconnect(mTree, SIGNAL(itemSelectionChanged()), this, SLOT(SelectedItemChangedInTree()));
disconnect(mCheckBoxShow, SIGNAL(toggled(bool)), this, SLOT(VisibleROIToggled(bool)));
disconnect(mOpacitySlider, SIGNAL(valueChanged(int)), this, SLOT(OpacityChanged(int)));