Have you right clicked on the images to see where the actual path is and then checked to see if those images were available in that path? In many cases I've found some folders are missed when publishing to the live site. Some of them are
- /App_Themes/< sitecodename >
- /< sitecodename > (for media library)
- /< some odd folder with design images in it >
If they have a /GetImage type url then you might check to see if there are any errors on your site and if those images were saved in the database properly.