8.2.6 Window width of the image

The parameter name shall be “windowWidth”.

Controls the contrast of the image as defined in PS 3.3. It is REQUIRED if "windowCenter" 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.