Nowadays,adverse effect of radioactive medical examination are less recognized by patients and doctors.They don't attach enough importance to radioactive medical examination so that their annual dose value of radiation exposure is likely to be out of limitation.Therefor,this article,referring to Thermoluminescence dosimetry system for personal and environmental radiation monitoring,researched different body parts' dose value of radiation exposure on different model of medical x-ray machine in some tertiary care hospitals in Heng Yang,which wi...