Objective To sum up clinical experience in assessment of radiation dose,clinical course,diagnosis,and treatment of three cases of acute radiation sickness (ARS) from a 60 Co radiation source accident on April 26 1999,in Henan Province.

• 目的 通过对6 0 Co源事故 3例中重度骨髓型急性放射病 (ARS)患者的剂量估算、临床经过和诊治方法的总结 ,以积累临床资料。