Radiation levels on interventional radiology in the National Institute of Cancerology
DOI:
https://doi.org/10.32685/2590-7468/invapnuclear.5.2021.602Keywords:
radiological protection, isodose surfaces, interventional radiology, radiation level assessment
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Abstract
Various interventional radiology procedures are performed at the National Cancer Institute of Bogotá, Colombia. The X-ray radiation levels to which personnel in the C-arm fluoroscopy room are exposed are determined by estimating isodose surfaces at a 45° oblique plane to the right of the patient table, where a ratio of approximately 12 to 1 is found between the mean ambient dose equivalent rates for over- and under-couch X-ray configurations. A 2:1 ratio is found for the mean ambient dose equivalent to the physician and the surgical technologist considering lateral planes with respect to the table. Last, an approximate annual effective dose is determined using data for the frequency of in-house procedures and duration of central venous catheter insertion, assuming the use of a leaded apron. The effective dose rate to the physician is six times larger than that to the surgical technologist.
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