在上肢超高分辨率圆束CT中用双人机器人X射线系统对患者进行屏蔽
Andreas Steven Kunz1, Stefan Weick2, Jan-Peter Grunz1,3
1Department of Diagnostic and Interventional Radiology, University Hospital Würzburg, Oberdürrbacher Straße 6, 97080 Würzburg, Germany.
Diagnostics (Basel, Switzerland)
|March 13, 2025
概括
手腕和肘部的超高分辨率圆束CT (CBCT) 涉及最小的器官辐射剂量. 屏蔽提供了一些剂量降低,但其对辐射负担的整体影响对于这些上肢成像程序来说是边际的.
科学领域:
- 医疗成像医学成像
- 放射学 放射学是一门学科.
- 辐射物理 辐射物理
背景情况:
- 无格兰特圆束CT (CBCT) 可实现上肢超高分辨率 (UHR) 成像.
- 这项技术为患者提供了舒适的桌边成像位置.
研究的目的:
- 在手腕和肘部的UHR-CBCT期间评估特定器官的辐射剂量.
- 为了确定屏蔽在减少这些程序期间的辐射暴露方面的有效性.
主要方法:
- 使用修改后的阿尔德森-兰多幻影用于手腕和肘部的UHR-CBCT扫描.
- 使用离子室和电表测量器官剂量 (眼镜,甲状腺,乳房,腹部).
- 进行了带有和没有屏蔽的测量.
主要成果:
- 在手腕 (0.10 ± 0.01 mGy) 和肘部 (0.12 ± 0.01 mGy) 成像中,眼镜获得了最高的吸收剂量.
- 在手腕CBCT期间,屏蔽使甲状腺剂量减少了17%.
- 对于肘部CBCT,屏蔽降低了48%的腹部剂量和39%的胸侧乳腺剂量.
结论:
- 屏蔽对不同的器官和上肢关节具有不同的有效性.
- 尽管局部减少,但屏蔽在手腕和肘部UHR-CBCT期间对绝对辐射剂量的整体影响是边际的.
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