Reduction in physician's hand dose during CT fluoroscopy-guided interventions

CT 透视引导干预期间医生手部剂量的减少

• 批准号: 23591820
• 负责人: KAWABE ATSUSHI
• 金额: $ 3.16万
• 依托单位: Okayama University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2013
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23591820/
• 关键词: 放射線防護; 職業被曝; CT透視; ＩＶＲ; 皮膚線量; ＣＴ透視; 職業被ばく; IVR

High exposures to personnel may occur during CT fluoroscopy-guided interventions. The purpose of this work was to reduce personnel hand's exposure during computed tomography-guided interventional radiology procedures. Radiation exposure to the hands of physicians was measured using a thermoluminescence ring worn on the proximal phalanx of the second finger. As a result, the median value of hand exposure of physician per procedure was 0.49 mSv (0.11-2.2 mSv). The average hand exposure rate for all procedures was 0.1 mSv min-1.We therefore produce tungsten protector experimentally. Tungsten sheet equipped surgical forceps reduced the scattered exposure by approximately 75% at distances of 10 cm from the scanning plane. This protection system for CT fluoroscopy-guided interventions was effective in reducing scattered radiation around the scanning plane. However, this system was not available in sterilized procedure.

在CT透视引导的干预过程中，可能会出现人员高暴露。这项工作的目的是减少人员的手暴露在计算机断层扫描引导的介入放射治疗过程中。医生手上的辐射暴露是用戴在第二个手指近端指骨上的热释光环来测量的。结果，医生每次手术的手暴露中位数为0.49毫西弗（0.11-2.2毫西弗）。所有操作的平均手接触率为0.1 mSv min-1。因此，我们实验生产了钨保护器。配有钨片的手术钳在距离扫描面10厘米处减少了约75%的散射暴露。该保护系统在CT透视引导下的介入治疗中能有效减少扫描平面周围的散射辐射。然而，该系统在灭菌过程中不可用。