圆束计算机断层扫描协议的优化,用于在皮肤髓切除术中进行手术内检测残留结石
Riemer Adam Kingma1, Nienke T L van Asten2, Marcel J W Greuter2
1Department of Urology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands.
Journal of endourology
|March 6, 2025
概括
优化形束计算断层扫描 (CBCT) 协议用于皮肤穿神经切除术 (PCNL) 允许减少辐射暴露,同时保持石块的可见性. 建议在PCNL期间进行手术内评估的三个量身定制的CBCT协议.
科学领域:
- 医疗成像医学成像
- 泌尿器科 泌尿器科 泌尿器科 泌尿器科
- 放射学 放射学是一门学科.
背景情况:
- 透皮骨切除术 (PCNL) 是针对大型或复杂型结石的首要治疗方法.
- 使用形束计算断层扫描 (CBCT) 进行手术内成像,有助于评估PCNL后的无石头状态.
- 目前的CBCT协议需要优化,以便在手术期间有效地检测石块碎片.
研究的目的:
- 在PCNL期间确定最佳的CBCT扫描协议,用于PCNL期间对结石碎片的手术内成像.
- 根据石材特征和患者因素来定制CBCT协议,以改善评估.
主要方法:
- 一个具有不同化的幻影模型被用于测试具有不同剂量和过器设置的九个CBCT协议.
- 化可检测性被视觉评估,并生成可见度曲线.
- 图像噪声,对比度和噪声比率 (CNRs) 以及有效的患者剂量为每个协议计算.
主要成果:
- 较低的辐射剂量和铜过器降低了化检测能力和CNR,同时增加了噪音.
- 确定了三个合适的CBCT方案:高剂量 (10.7 mSv),中剂量 (4.6 mSv) 和低剂量 (2.2 mSv).
- 低剂量协议适用于硬石,而高剂量协议更适合软石.
结论:
- 在不损害化可见性的情况下,可以减少手术内CBCT辐射剂量.
- 低剂量CT协议与调整的设置和铜过器是有效的成像化.
- 拟议的协议提供灵活性,在PCNL期间根据石头类型和患者特征选择CBCT设置.
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