protected override IDataModalityLut CreateLut()
            {
                CachedModalityLutLinear lut = new CachedModalityLutLinear(_sourceLut);

                _sourceLut.Clear();
                return(lut);
            }
 internal ModalityLutCacheItem(ModalityLutLinear sourceLut)
 {
     _sourceLut = sourceLut;
     _sourceLut.Clear();
 }