An interesting find that the "document" from the TDKR ARG, which is supposed to be dated December 2012 mentions Dr. Pavel here's presentation "three years ago," which would be in 2009. So I looked and found this:
http://www.nss-mic.org/2009/
>The 2009 IEEE Nuclear Science Symposium and Medical Imaging Conference was held at the Hilton Disney World Hotel in Orlando Florida from October 25 to 31, 2009. There were 1785 registered attendees from 47 countries and more than 1500 papers submitted.
>Nuclear Science
>Dr. Pavel is a nuclear physicist
So voila.