Japanese Empress Michiko attends the Florence Nightingale medal awarding ceremony in Tokyo on August 5, 2015. Empress Michiko is set to receive checkups on her coronary artery using computed tomography on August 9 at the University of Tokyo Hospital due to suspected myocardial ischemia.  AFP PHOTO / Yoshikazu TSUNO        (Photo credit should read YOSHIKAZU TSUNO/AFP/Getty Images)