add init

Signed-off-by: Yiheng Wang <[email protected]>

Author: yiheng-wang-nv

monai/data/__init__.py

@@ -50,7 +50,7 @@
 from .folder_layout import FolderLayout, FolderLayoutBase
 from .grid_dataset import GridPatchDataset, PatchDataset, PatchIter, PatchIterd
 from .image_dataset import ImageDataset
-from .image_reader import ImageReader, ITKReader, NibabelReader, NrrdReader, NumpyReader, PILReader, PydicomReader
+from .image_reader import ImageReader, ITKReader, NibabelReader, NibabelGPUReader, NrrdReader, NumpyReader, PILReader, PydicomReader
 from .image_writer import (
     SUPPORTED_WRITERS,
     ImageWriter,