The question has been presented, does pagerank pass through images to assist search engine optimization efforts? In this video by Matt Cutts, head of webspam at Google, we see this issue addressed. In the video, Matt decides to get a little goofy and tell us the answer as fast as he can.
Does SEO Pagerank Pass Through Image Links
Any Google SEO expert should know the answer to this question. Pagerank does clearly pass through image links and now we have this completely verified by Google.