From www.npr.org - November 30, 2011 7:41 PM

Several years ago, Dr. Steven Sirr decided to marry his two passions: CT scans and violins. But not just any violin — a 307-year-old Stradivarius, one of the most prized instruments in the world. Sirr has collaborated with a few violin makers to build their own Stradivarius using the scans.