A new pacemaker that makes it safe for heart disease patients to have a vital diagnostic test they previously could not has been implanted in the first Tasmanian. Previously Tasmanians with pacemakers in their hearts could not undergo Magnetic Resonance Imaging (MRI) scans used to detect cancer, strokes and other disease. Hobart cardiologist Leigh Bowman says the new MRI-friendly pacemaker will make a big difference as at least half of pacemaker patients will need an MRI in their lifetime.