title: Presidential address.
authors.affiliation: Founder & Chief Radiologist, Mahajan Imaging, New Delhi, Chairman, Department of Nuclear Medicine and Pet CT, Sir Ganga Ram Hospital, Rajinder Nagar, New Delhi, India; Honorary Radiologist to the President of India, Padma Shri Awardee; Honorary Consultant, International Atomic Energy Agency, Vienna, Austria.
authors.forename: Harsh
authors.initials: H
authors.lastname: Mahajan