It could be done easily enough with a URL action, but that would really only allow it to show a single picture at a time (in a separate worksheet). I'm not sure of a way to do it within a table.
Yeah that hard part is finding a way to have them dynamically change since there wouldn't be a set amount. Thus perhaps if it was possible to have a folder filled with the images and thus automatically be added to the visual. Basically an excel sheet with an ID/name and then a second column with the path to the image so that it would automatically be updated as the excel sheet updates.