Skin doses in fluoroscopically guided interventional procedures in back pain management
Keywords:Patient and staff radiation dose, skin dose
AbstractPatient doses in common fluoroscopically guided interventional procedures in back pain are usually expressed as exposure time per procedure while actual skin dose values from direct measurements are unknown. In this study, the radiation doses delivered to 27 patients, who underwent one or more of these procedures totaling 49 procedures, were measured using thermoluminescent dosemeters (TLD). The mean of the maximum skin doses was 20.2mGy (range, 1.1-93.9mGy) for epidural injections, 48.9mGy (range, 2.9-210.4 mGy) for facet joint injections, 37.4mGy (range, 4.4-94.8mGy) for sacroiliac joint injections and 14.3mGy (range, 5.5- 27.0mGy) for radiofrequency neurotomy. The exposure time per procedure ranged from 1.0 to 135.0 seconds. Although there was a large variation in the maximum skin dose per procedure these values were lower than the mean skin dose reported in coronary angiography procedures.
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