A group of eastern Iowa researchers have been granted a utility patent for a new “range-shifting” device to improve potential radiosurgery for certain types of brain cancer, the Corridor Business Journal reports. The device, which resembles a domed helmet, is designed for use in stereotactic radio surgery. The piece was created by Dongxu Wang, a clinical associate professor of radiation oncology at the University of Iowa Carver College of Medicine; Daniel Hyer, an associate professor of radiation oncology; and Blake Dirksen, a medical physicist at Mercy Medical Center in Cedar Rapids.