Gyeong Cheon Park, Department of Radiology, Yeungnam University Medical Center

Soo Young Choi, Department of Radiology, Yeungnam University Medical Center
Sohwa Yoon, Department of Radiology, The Catholic University of Korea incheon Hospital

Chong Hyun Suh, Department of Radiology, Namwon Medical Center
Ji-won Oh, Department of Radiology, The Catholic University of Korea Seoul St. Mary's Hospital
Minwook Lee, Department of Radiology, Armed Forced Il-dong military hospital