1 Department of Radiodiagnosis, Sree Balaji Medical College and Hospital, 7 Works Road, Chromepet, Chennai, Tamilnadu, 600044, India. ivraman31@gmail.com.
2 Department of Radiodiagnosis, Meenakshi Medical College Hospital and Research Institute, Enathur, Karrapettai Post, Kanchipuram, Tamilnadu, 631 552, India.