He starts with magnetic resonance imaging and computerized tomography scans to create a "finite element model, " a wire-frame mesh to be filled with information.

FORBES: Magazine Article

Then there's the battery of computerized tomography scans.

FORBES: The Scary Side Of Health Testing

When Makower examined dozens of computerized tomography scans to better understand the anatomy of the sinuses, he noticed that the sinuses "looked like a whole bunch of little arteries" and wondered if he could apply the techniques of cardiac angioplasty to the sinuses.

FORBES: Balloon Therapy