Is possible to Convert a 1 bit B&W Tiff image to a 16 Bit Greyscale Tiff image?

Hi there,
I am trying to convert a 1 bit Black & White Tiff image to a 16 Bit Greyscale Tiff image, Anyone out there know if it is possible and how it may be done? We are using Adobe Acrobat 9 Pro Extended.
Any help would be appreciated.
Cheers, Chris

Almost any graphic editor can do it, but it doesn't make a sense. The picture information remain the same - 1 bit. It has nothing to do with Acrobat.

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