connect(mSlicerManagers.back(), SIGNAL(WindowLevelChanged(double, double,int, int)),
this,SLOT(WindowLevelChanged(double, double, int, int)));
connect(mSlicerManagers.back(), SIGNAL(UpdateSlice(int,int)),
connect(mSlicerManagers.back(), SIGNAL(WindowLevelChanged(double, double,int, int)),
this,SLOT(WindowLevelChanged(double, double, int, int)));
connect(mSlicerManagers.back(), SIGNAL(UpdateSlice(int,int)),