pydicom.pixel_data_handlers.apply_windowing

pydicom.pixel_data_handlers.apply_windowing(arr: np.ndarray, ds: Dataset, index: int = 0) np.ndarray[source]

Apply a windowing operation to arr.

New in version 2.1.

Parameters
  • arr (numpy.ndarray) – The ndarray to apply the windowing operation to.

  • ds (dataset.Dataset) – A dataset containing a VOI LUT Module. If (0028,1050) Window Center and (0028,1051) Window Width are present then returns an array of np.float64, otherwise arr will be returned unchanged.

  • index (int, optional) – When the VOI LUT Module contains multiple alternative views, this is the index of the view to return (default 0).

Returns

An array with applied windowing operation.

Return type

numpy.ndarray

Notes

When the dataset requires a modality LUT or rescale operation as part of the Modality LUT module then that must be applied before any windowing operation.

References