[X-ray effect on patients with upper urinary tract calculi during extracorporeal shock wave lithotripsy]

This study reports the results of radiation exposure to 90 patients with upper urinary tract calculi during Extracorporeal Shock Wave Lithotripsy (ESWL). A domestically made JT-ESWL-I lithotripter was used. Radiation exposure to the patients averaged 67.02 mSv at 65-70 kV, 2 mA. The data indicated that the amount of radiation exposure is related to the number, size, location and the radiodensity of the stone, and also the number of shock wave and the time of fluoroscopy exposure given to the patients. The results of the chromosome aberration and the micronucleus of lymphocytes assay in the human blood are reported and the prevention of radiation exposure is discussed.