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《Chinese Journal of Radiation Mediation and Protection》 2005-03
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Measurement and evaluation of radiation field in invasive diagnosis and treatment area

YU Peng~*,WEI Ke-dao,LI Tian_chang,et al.()~*Department of Interventional Radiology of Beijing Tongren Hospital,Capital University of Medical Sciences,Beijing 100730,China;  
Objective To measure and evaluate the distribution feature of radiation dose at the conventional puncture plane in invasive diagnosis and treatment area, and depict the corresponding isodose curve. Methods A platform was built at the conventinal puncture plane in invasive diagnosis and treatment area.By taking the center of X_ray source as the measurement center coosing the conventinal antero_posterior and lateral basic postures and choosing one measurement site for every 0.1 m in 8 directions,measurements were carried out for three times at every measurement point and the arithmetic means,were calculated,corrected and converted to mGy/h. Results We successfully measured doses of X_ray radiation in invasive diagnosis and treatment area,and depicted the distribution curve. Conclusion Generally, the left_superior radiation field of the patient is the strongest,where the physician interns always stands to install a pacemaker.Therefore,the latter should be alerted.The practising physicians and interns often stand there to watch the performance.They should avoid standing there.Nurses always stand in the left_inferior field of the patient doing fluid infusion and adding drugs into the fluid.They should be aware of the danger.Electrophysiology technicians often stand on the left_foot side of the patient,although the radiation dose in not large,they should take care too.Operators always stand on the right side of the patient.They should be protected.;
【Fund】: 首都医学发展科研基金资助项目(20023026)
【CateGory Index】: R144
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