TEN YEARS INVESTIGATION ON RADIOLOGICAL EXPOSURES TO THEEMBRYO AND FETUS IN PREGNANT WOMEN OF IRAN

摘要

Over 1340 Iranian pregnant patients, exposed to diagnostic x-rays during 1984 to 1994, referred to me forrninvestigation and estimation of the absorbed dose to their embryo or fetus. They were almost all the patientsrnexposed to x-rays in the whole country in 10 years. Two sets of questioner filed for each patient and all thernexposing condition and setting information obtained from the radiology centers concerned. The absorbed dose tornembryo or fetus accurately calculated and in some cases measured in a phantom for each patient. The youngestrnpatient at the time of irradiation was 15 and the oldest was 51 with an average of 28.624+5.961 years old. ThernAP and lateral thickness of patient's abdomen on average were 18.078+0.162 cm and 24.630+8.365 cmrnrespectively. The average weight of patients was 59.285+12.945 kg. Ranging from 30 kg to 122 kg. The marriagernage of the patients on average was 19.398+4.107 years ranging from 9 to 42 years old. The average age of fetusrnwhen exposed to x-rays was 31.22+18.76 days. About %20 of the patients had exposures in 2 to 4 more sessions.rnThe average fetal dose was 0.68+ 0.381 cGy with over %37 from 1 to 9 cGy.