Dr O' Hanlon completed his CMR fellowship in the Royal Brompton Hospital, London, in 2009 and returned to Ireland to set the 1st dedicated CMR service in Ireland in Blackrock Clinic. He now also co-runs the CMR department in the Beacon Hospital, Dublin. Combined, he scans over 7500 patients per year, with a national referral base. His specialty interests include cardiomyopathies, sports cardiology, and heart failure.