Returns the value of the Rescale Slope tag (0028,1053). Rescale Slope and DICOM_RescaleIntercept define a linear subset of a conceptual Modality LUT transformation.
// Get Hounsfield unit hu := ImageEnView1.IEBitmap.Pixels_ie16g[x, y] * ImageEnView1.IO.IOParams.DICOM_RescaleSlope + ImageEnView1.IO.IOParams.DICOM_RescaleIntercept;