#include "itkImageRegionIterator.h"
#include "itkImageRegionIteratorWithIndex.h"
#include "itkNumericTraits.h"
+#if ITK_VERSION_MAJOR <= 4
#include "itkSimpleFastMutexLock.h"
+#else
+#include <mutex>
+#endif
#include "itkImageMaskSpatialObject.h"
namespace clitk