Evaluation of absorbed radiation dose to working staff during cardiac catheterization procedures.

摘要: BACKGROUND Cardiac catheterization has been used frequently for the evaluation and treatment of patients with heart diseases. The working staff, particularly cardiologists who perform these procedures, have highest potential risk receiving high radiation doses due to close contact patients. purpose this study was measure evaluate accumulated dosage while they were performing clinical procedures in cardiac laboratory. environment laboratory also monitored radiation. METHODS Thermoluminescent dosimeters (TLDs) very sensitivity employed dose evaluations. They taped various parts body during procedures. For environmental monitoring, TLDs distributed at several sites rooms a period 2 4 weeks. RESULTS showed that left wrist received (338 microsieverts [microSv]/procedure) lens second (149 microSv/procedure) knees unexpectedly (92 microSv/procedure), partly leakage from lead curtain shielding under patient couch. On average, effective per year 37 mSv/y cardiologist performs 10 week. Compare occupational exposure limit 50 mSv/y. estimated equivalent 152 mSv/y, which exceeded regulatory exposure. CONCLUSIONS Using proper increasing distance source are good strategies reducing medical staff. work area outside room considered safe because level essentially background level.