放射治疗后的早期和晚期结构性大脑变化:一项针对质瘤患者的MRI研究
Erika Joselyn Ludeña Maza1, Juliana Fernandes Pavoni1,2, Renata Ferranti Leoni3
1Department of Physics, FFCLRP, University of Sao Paulo, Ribeirao Preto, SP, Brazil.
Journal of neuro-oncology
|March 21, 2025
概括
脑瘤的放射治疗可以影响健康的脑组织,导致体积减少和皮质稀薄. 定量MRI揭示了对辐射敏感的区域,有助于个性化治疗以尽量减少副作用.
科学领域:
- 神经成像是一种神经成像.
- 辐射瘤学 辐射瘤学
- 神经科学是一个神经科学.
背景情况:
- 增加脑瘤患者的生存率需要了解放射治疗对健康脑组织的影响.
- 质瘤治疗通常涉及放射治疗,对周围健康的大脑结构构成风险.
研究的目的:
- 评估放射治疗 (RT) 对质瘤患者健康脑组织的影响.
- 使用定量磁共振成像 (MRI) 识别对辐射敏感的大脑区域.
- 支持个性化RT策略的开发,以改善患者的治疗结果.
主要方法:
- 对来自25名患者 (A组) 的75个MRI和来自13名患者 (B组) 的39个MRI进行了回顾性分析.
- 患者接受了术后RT,剂量在25至60 Gy之间.
- 线性混合效应建模确定了RT后体积减少,皮质稀释和明显扩散系数 (ADC) 增加的预测因素.
主要成果:
- 在RT后的多个皮质区域与瘤部位交叉侧的多个皮质区域中观察到ADC的显著增加.
- 在特定的 contralateral gyri (中,par opercularis,lingual) 中,与辐射剂量相关的ADC变化.
- 在健康的大脑区域中也注意到大脑体积减少和皮质稀薄.
结论:
- 放射治疗可以诱导健康的大脑组织的变化,包括ADC增加,体积减少和皮质稀释,表明潜在的治疗后续.
- 研究结果强调了针对辐射敏感区域的神经保护策略的必要性.
- 个性化治疗方法对于减轻认知和功能影响,提高患者护理和生活质量至关重要.
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