how i can put images in my data table from data base?

Hi... well my problem is, i use the basic example for generate my data table from php + mysql, all is working fine, but i don't know how put the images, this images are inside my data base in string, only the name and extention, actually im used this script...
http://www.datatables.net/release-datatables/examples/server_side/server_side.html

i just need know how take the string from my data base and add tags html...
Thanks..