磁力共振成像扭曲校正与大脑转移的立体辐射疗法中改善局部控制有关
Daniel Höfler1,2,3, Johanna Grigo4,5, Hadi Siavosch4,5
1Department of Radiation Oncology, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg, Universitätsstraße 27, 91054, Erlangen, Germany. daniel.hoefler@uk-erlangen.de.
Scientific reports
|March 18, 2025
概括
磁力共振成像扭曲校正对于精确的放射治疗计划至关重要. 这项研究发现,使用纠正的MRI扫描显著改善了用立体辐射疗法治疗的大脑转移的局部控制.
科学领域:
- 辐射疗法 辐射疗法
- 医疗成像医学成像
- 在瘤学瘤学.
背景情况:
- 大脑MRI扫描可能有多毫米的扭曲,因为梯度非线性.
- 这些扭曲需要纠正,以便精确的放射治疗治疗计划.
- 磁力共振成像扭曲校正对患者结局的临床影响在很大程度上仍未被描述.
研究的目的:
- 研究MRI扭曲校正对脑转移患者局部控制的临床意义.
- 评估二维扭曲校正对立体辐射疗法结果的影响.
主要方法:
- 分析了189名接受立体性放射治疗 (2003-2015) 的患者中419例脑转移的历史队列.
- 使用RANO-BM标准的体积扩展评估了局部控制.
- 使用竞争性风险分析来确定扭曲纠正的意义,调整多个临床因素.
主要成果:
- 52.5%的病变使用2D扭曲校正的MRI进行计划,而47.5%使用未经校正的MRI.
- 2D扭曲校正与改善的局部控制有关,在12个月和24个月内局部进展的累积发病率较低 (分别为14.3%与21.2%和18.7%与28.6%).
- 在多变量分析中,扭曲校正仍然是改善局部控制的重要预测指标 (HR 0.55,p=0.020).
结论:
- 这是首次对MRI梯度非线性扭曲校正对脑转移的立体辐射疗法中局部控制的影响进行临床评估.
- 在治疗规划中使用2D校正的MRI研究与明显更高的局部控制有关.
- 这些发现强调了使用扭曲纠正的MR图像对于准确的放射治疗治疗计划的重要性.
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