Converting Powerpoint into Fully Accessable PDFs

[KCD123]

I am trying to create a PDF of a PowerPoint file with full accessibility with no errors. I am currently using Microsoft Office 2010, and checking the web accessibility with Adobe Acrobat 9 Pro.


Advanced>Accessibility>Full Check



However when I bring it over to PDF from PowerPoint, none of the images retain or register as having alternate text. As being a PowerPoint, I find that a lot of the images that don't need alternate text, such as the various segments of the background, register as requiring alternate text. I have tried actually following the prompts and giving alternate text to some images, but they still register as not having any.

Can anyone please help?


Thanks
KCD123