8.2.5 Window center of the image

The parameter name shall be “windowCenter”.

Controls the luminosity of the image as defined in PS 3.3. This parameter is REQUIRED if "windowWidth" is present. This parameter shall not be present if there is a presentationUID parameter. It shall not be present if contentType is application/dicom.

The value shall be encoded as a decimal string (DS), as specified in PS 3.5.