儿科后腔瘤治疗对使用休息状态fMRI和 Tractography的工作记忆通道的影响
Abir Troudi Habibi1,2, Ines Ben Alaya1, Fatima Tensaouti2,3
1University of Tunis El Manar, Higher Institute of Medical Technologies of Tunis, Research Laboratory of Biophysics and Medical Technologies LR13ES07, Tunis, Tunisia.
概括
用放射治疗和化疗治疗的儿童脑瘤幸存者在工作记忆道中显示出显著的白质损伤. 这种神经毒性影响认知功能,突出了需要保护性治疗策略的需要.
科学领域:
- 神经科学是一个神经科学.
- 儿科瘤学 儿科瘤学
- 放射学 放射学是一门学科.
背景情况:
- 在小儿大脑瘤幸存者中,工作记忆缺陷很常见.
- 像手术,放射治疗 (RT) 和化疗 (CT) 这样的治疗可以影响认知功能.
- 后腔瘤 (PFTs) 通常会影响关键的大脑网络.
研究的目的:
- 研究PFT治疗对工作记忆道的长期影响.
- 使用静止状态功能性MRI (rs-fMRI) 和扩散MRI通道图进行分析.
- 为了将成像发现与认知和临床结果相关联.
主要方法:
- 包括脑髓母细胞瘤 (MB) 幸存者 (RT+CT),飞细胞瘤 (PA) 幸存者 (仅限手术) 和健康对照.
- 使用rs-fMRI种子口罩和扩散MRI通道图识别了工作记忆带.
- 评估了连接性改变,并与神经心理测试和辐射剂量相关联.
主要成果:
- 经历过MB的幸存者表现出显著的工作记忆网络损伤 (减少管道体积,纤维密度,FA).
- 在MB幸存者中,较低的工作记忆得分与管道体积减少和FA相关.
- 较高的辐射剂量与通道完整性降低有关,特别是在弧形和上纵向囊.
结论:
- 轨道图学特征表明白质损伤是PFT幸存者治疗神经毒性的生物标志物.
- RT和CT显著影响工作记忆网络.
- 在儿童脑瘤患者的治疗计划中,保持认知功能至关重要.
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