AvaliaÃÃo de dose em procedimentos especiais de fluoroscopia: histerossalpingografia e dacriocistografia
AUTOR(ES)
Cintya Carolina Barbosa Lopes
DATA DE PUBLICAÇÃO
2006
RESUMO
The Hysterosalpingography (HSG) and Dacryocystography (DCG) are among the special fluoroscopy procedures. The HSG is a radiodiagnostic technique used to detect uterine and tubal pathologies and it is fundamental for the investigation of infertility. The DCG is a form of lacrimal system imaging, being important to show the level of obstruction, the presence of dilatation of the lacrimal sac, as well as alterations in nearby structures. At this research, the study of skin entrance dose was evaluated for these two special fluoroscopy procedures, besides the analyses of staff doses whose performs the exams. The exams of 22 HSG patients and 8 DCG patients were evaluated using TL-100 dosimeters attatched on patient skin at anatomical landmarks envolved on each exam. In the case of HSG, the results showed that skin entrance doses varied from 0.5 mGy to 73.4 mGy, with an average value of 22.1 mGy. The estimated uterus dose was 5.5 mGy , and 6.6 mGy was the average dose estimated to the ovaries. The patient skin entrance dose undergoing to DCG examinations varied from 2.1 mGy to 10.6 mGy, and the average eyeÂs dose was 6.1 mGy. The results of sttafÂs dose showed that, on HSG, the average dose on doctorÂs right hand was 4.3 mGy per examination. This value had to the fact that the physician introduces the contrast manually while all contrast exposures. In relation of DCG, the staffÂs dose values were nearby background radiation, evidencing that, inside of permitted limits, there is no risk for the physicians at this procedure
ASSUNTO(S)
skin entrance dose fluoroscopia engenharia nuclear dose de entrada na pele dose ocupacional fluoroscopy staffÂs dose
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