We welcome discussion on any aspect of the book, or medical visualization in general!
If there is anything specific you would like to discuss, please send us an email at info@medvisbook.com. We will then add a short blog post on this site introducing the topic, and then the discussion can continue in the comments on that post.
We are also active on the MedVisBook Facebook page, medvis.org and on the google+ medvis community, if you would prefer to have this discussion there.