在AIS的导航技术中暴露于辐射:在术前CT和术后CT之间有什么区别?
Mikaela H Sullivan1, Lifeng Yu2, Beth A Schueler2
1Department of Orthopedic Surgery, Mayo Clinic, 200 First Street SW, Rochester, MN, 55905, USA.
与手术内CT (ICT) 导航相比,青少年异常学脊椎病手术的低剂量手术前CT (PCT) 导航显著降低了辐射暴露. 在这两种导航方法之间,操作时间仍然相似.
科学领域:
- 脊柱外科手术 脊柱外科手术
- 医疗成像医学成像
- 辐射剂量计 辐射剂量计
背景情况:
- 导航系统可以提高青少年异常学脊椎病 (AIS) 手术中的脚螺丝精度.
- 从手术内CT (ICT) 过渡到手术前CT (PCT) 基于光学导航发生在中心.
研究的目的:
- 为了比较AIS患者进行后脊髓融合的光学导航的低剂量ICT和标准/低剂量PCT之间的辐射剂量和操作时间.
主要方法:
- 一项匹配对照队列研究包括38名AIS患者 (19名ICT,19名PCT).
- 光学导航使用了手术前CT (PCT),它可以是标准的或低剂量的.
- 辐射指标 (每级有效剂量) 和每级手术时间在各组之间进行了比较.
主要成果:
- 与低剂量ICT (0.14 mSv) 相比,低剂量PCT的有效剂量 (ED) 每个水平 (0.061 mSv) 显着较低.
- 标准剂量PCT导致每级ED (1.46 mSv) 显著高于低剂量PCT和低剂量ICT.
- 在ICT (31分钟) 和PCT (33分钟) 组中,每个级别的平均操作时间是可比的.
结论:
- 与ICT相比,低剂量PCT显著减少了每级辐射暴露.
- 标准剂量PCT涉及比ICT和低剂量PCT更高的辐射暴露.
- 带有PCT的光学导航,特别是低剂量导航,在AIS手术中为ICT提供了节约辐射的替代方案,而不会增加手术时间.
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