[1] Chulalongkorn Univ, Fac Med, Dept Radiol, Bangkok, Thailand
[2] King Chulalongkorn Mem Hosp, Thai Red Cross Soc, Bangkok, Thailand
[3] Chulalongkorn Univ, Fac Med, Dept Radiol, Div Nucl Med, Bangkok, Thailand
[4] Phramongkutklao Coll Med, Bangkok, Thailand
[5] King Chulalongkorn Mem Hosp, Thai Red Cross Soc, 1873 Rama 4 Rd, Bangkok, Thailand