Wood density scanner

Does anyone know if they make a tool like this? Ideally it would be for checking wood conditions after insect damage to try and determine how much material loss exist that cannot be seen visually…

I think the cost is extremly high …

http://www.ndt.net/article/v06n03/schajer/schajer.htm

http://pure.ltu.se/portal/files/489731/LTU-DT-0709-SE.pdf