To detect heart problems, doctors have long relied on stress tests, also called treadmill tests. But that could change. Researchers in Colorado are developing a new approach where doctors inject a patient with an imaging agent that pinpoints damage to the heart. Centennial-based biotech company CellPoint is working with the MD Anderson Cancer Center in Houston on the method. CPR's Andrea Dukakis speaks with Terry Colip, one of CellPoint's founders.