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- W1963664241 abstract "Déterminer la dose organe délivrée pour les scanners pédiatriques courants du tronc et proposer une réduction des doses. Une étude sur fantôme correspondant au corps d’un enfant de 5 ans a été menée afin de mesurer la dose délivrée aux gonades, à la moelle osseuse (sternum T12) et à la thyroïde pour les scanners thoraciques, abdominaux, du bassin et du rachis. On a tenté d’optimiser les doses en réduisant les paramètres. Les doses organes délivrées sont assez significatives pour un scanner thoracique, aux seins et aux sites hématopoïétiques, la dose aux ovaires est importante pour les scanners abdomino-pelviens et le scanner du rachis est très irradiant pour la thyroïde ainsi que pour la moelle rouge. L’optimisation peut se faire sans dégradation de la qualité de l’image en diminuant KV et mAs dans des limites raisonnables. Cette étude doit servir de base à l’évaluation des doses délivrées par les scanners nouvelle génération. To estimate radiation doses from routine pediatric CT scans (body) and to propose dose reduction protocols. Study performed with a phantom equivalent to the body of 5 year old child with evaluation of doses delivered to breast, gonads, bone marrow (sternum, T12) and thyroid for CT examinations of the chest, abdomen, pelvis and spine. Extrapolation is made to estimate the doses for 1 year old and 10 year old children. Finally, dose reduction protocols are evaluated. CT of the chest delivers significant doses to breast tissue and bone marrow, CT of the abdomen and pelvis delivers significant doses to the ovaries and CT pf the spine delivers significant doses to thyroid and bone marrow. Optimization can be achieved without degradation of the image quality, by reducing Kv and mAs within reasonable limits. This study may be used in order to evaluate the doses delivered by multi-detector CT units." @default.
- W1963664241 created "2016-06-24" @default.
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- W1963664241 date "2005-05-01" @default.
- W1963664241 modified "2023-10-16" @default.
- W1963664241 title "Évaluation des doses d’irradiation aux organes en scanographie pédiatrique" @default.
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- W1963664241 doi "https://doi.org/10.1016/s0221-0363(05)81394-0" @default.
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