2007
DOI: 10.1148/rg.274065149
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Radiation Exposure and Pregnancy: When Should We Be Concerned?

Abstract: The potential biological effects of in utero radiation exposure of a developing fetus include prenatal death, intrauterine growth restriction, small head size, mental retardation, organ malformation, and childhood cancer. The risk of each effect depends on the gestational age at the time of exposure, fetal cellular repair mechanisms, and the absorbed radiation dose level. A comparison between the dose levels associated with each of these risks and the estimated fetal doses from typical radiologic examinations … Show more

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Cited by 496 publications
(338 citation statements)
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“…These results indicate that, while there may be wide variation among individual patients, fetal doses from a single abdominal and pelvic CT examination are still below the consensus levels or negligible risk (50 -150 mGy) and well below the "actionable" level of 150 mGy (23). This should not be interpreted as CT imaging in pregnant patients should be performed without adequate clinical justification.…”
Section: Medical Physics: Monte Carlo Simulation In Pregnant Patient mentioning
confidence: 89%
“…These results indicate that, while there may be wide variation among individual patients, fetal doses from a single abdominal and pelvic CT examination are still below the consensus levels or negligible risk (50 -150 mGy) and well below the "actionable" level of 150 mGy (23). This should not be interpreted as CT imaging in pregnant patients should be performed without adequate clinical justification.…”
Section: Medical Physics: Monte Carlo Simulation In Pregnant Patient mentioning
confidence: 89%
“…12 Even with direct radiation to the foetus, doses of less than 50 mGy are associated with negligible risk when compared with other risks of pregnancy. 12 As always, imaging should only be obtained if it is likely to change the clinical management of the patient. Plain radiographs of the head and neck are safe in pregnancy.…”
Section: Discussionmentioning
confidence: 99%
“…Se o útero está posicionado fora do campo de visão do procedimento radiológico, a radiação e a dose absorvida pelo concepto exposto são mínimas. Doses maiores de exposição ocorrem quando o concepto está no campo de visão do procedimento radiológico; nesse caso, a dose recebida pelo concepto depende da espessura da parede da paciente, da direção da incidência e da profundidade do concepto em relação à superfície da pele materna 11 . Especificamente os exames radiológicos de cabeça, pescoço, tórax e extremidades estão associados com níveis negligenciáveis de radiação ionizante para o concepto.…”
Section: Raio Xunclassified
“…Em caso de necessidade de investigação abdominal ou pélvica, recomenda-se a realização inicial de USG e, se inconclusiva, deve-se prosseguir com a investigação por meio da RNM, se disponível. Porém, se houver a necessidade da realização de exames radiográficos, fluoroscópicos ou de tomografia computadorizada em abdome e pelve para melhor esclarecimento diagnóstico de patologia materna, estes podem ser realizados, uma vez que a dose de irradiação fetal recebida raramente excede 25 mGy 11 .…”
Section: Raio Xunclassified
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