ヨウ素-131への曝露後の白血病の発生率
Lancet (London, England)
|July 14, 1992
まとめ
この研究では,ヨウ素-131 (131I) で治療されたスウェーデン人の患者では,白血病のリスクが有意に増加していないことが判明しました. 結果は,131Iの医療曝露が放射線誘発性白血病に関して安心させると示唆しています.
科学分野:
- 核医学は,核医学である.
- 放射線腫瘍学 放射線腫瘍学
- エピデミオロジー エピデミオロジー
背景:
- 白血病は,電離放射線被曝の遅い効果として知られています.
- ヨウ素-131 (131I) は,甲状腺疾患の診断と治療に使用されます.
研究 の 目的:
- ヨウ素-131 (131I) に曝露した後の白血病の発生率を調査する.
- 131Iの暴露と白血病のリスクとの関係を評価するために,大規模な患者コホートで.
主な方法:
- 131Iに曝露された46,988人のスウェーデン人のコホートが研究されました.
- 観察された白血病の症例は,一般人口の予想される割合と比較した.
- 骨髄が吸収した平均量は14mGyと推定された.
主要な成果:
- 195の白血病は,暴露後2年以上で発生し,標準化発生率 (SIR) は1.09 (95%CI:0.94-1.25) でした.
- 慢性リンパ球性白血病 (CLL) や非CLLのリスクの有意な増加は観察されなかった.
- 白血病のリスクは,性別,年齢,時間,または放射線用量によって変化しませんでした.
結論:
- 25%を超える過剰白血病リスクは,この成人の集団で高い保証で除外されました.
- 結果は,医療実践で131Iに曝露された患者にとって安心です.
- この発見は,チェルノブイリ原発の放射性降下物にさらされた個人にとっても重要かもしれない.
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