The Virginia Tech team put a laser sensor on the front of the car to look for activity in nearby areas.

VOA: special.2009.11.03

The team's sensor devices were set on differing wavelengths.

VOA: special.2009.11.17

The device is a tiny sensor, implanted through a catheter in the heart's pulmonary artery.

VOA: standard.2010.06.04

With the sensor, patients have a 30 percent chance of avoiding hospitalization.

VOA: standard.2010.06.04