The VOI LUT Module is required if the VOI LUT stage is not an identity transformation. Support for both window and LUT is mandatory. The output grayscale space is defined to be in P-Values.
If the VOI LUT Module is absent, then the stored pixel values are in P-Values.
In the Image Pixel Module, the following constraints apply:
Samples per Pixel (0028,0002) shall be 1
Photometric Interpretation (0028,0004) shall be MONOCHROME2
Bits Allocated (0028,0100) shall be 16
Bits Stored (0028,0101) shall be greater than or equal to 9 and less than or equal to 16
High Bit (0028,0102) shall be one less than Bits Stored (0028,0101)
Pixel Representation (0028,0103) shall be 0
Planar Configuration (0028,0006) shall not be present
Rescale Slope and Rescale Intercept are not constrained in this IOD to any particular values. E.g., they may be used to recover floating point values scaled to the integer range of the stored pixel values, Rescale Slope may be less than one, e.g., a Rescale Slope of 1.0/65535 would allow represent floating point values from 0 to 1.0.
The Overlay Plane Module shall not be present. Unused high bits shall be filled with zeroes.