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重复的大脑MRI在识别在痴呆前阶段的神经退行性疾病的实用性
Chiara Carbone1, Chiara Gallingani2, Erica Balboni1
1Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Modena, Italy.
Neurobiology of aging
|July 24, 2025
概括
在重复的MRI扫描中检测大脑体积的显著变化可以帮助识别需要进一步生物标志物测试的个人,以检测微妙的认知症状. 这种方法有助于决定早期神经疾病的先进评估.
科学领域:
- 神经学 神经学
- 放射学 放射学是指放射学
- 生物标志物研究 生物标志物研究
背景情况:
- 通过正常的大脑成像来诊断微妙的认知/行为症状是具有挑战性的.
- 目前的指导方针没有明确的标准,用于超出临床后续的高级测试.
- 昂贵和侵入性的二级评估对所有患者来说都是不可行的.
研究的目的:
- 探索重复磁共振成像 (MRI) 在诊断微妙的认知变化的实用性.
- 为了确定超出正常衰老的病态大脑体积 (BV) 变化是否可以指导生物标志物测试决策.
- 为了研究大脑体积变化对疾病进展和分类的预测价值.
主要方法:
- 110名患有微妙认知/行为投诉的人接受了基线和18个月后续评估.
- 进行了神经心理评估,MRI和生物标志物测试.
- 用SIENA计算并与规范数据比较,计算了BV变化 (PBVC/y) 的年均百分比.
主要成果:
- 超过第80/95个百分位数的PBVC/y增加了被归类为转换者或患有阿尔茨海默病/前性痴呆症的可能性.
- 超过PBVC/y的第80百分位数增加了被归类为非转换者+的几率.
- 后勤回归确定了PBVC/y,基线BV和迷你精神状态检查的变化作为预测因素.
结论:
- 使用SIENA规范数据的重复MRI分析可以帮助选择患者进行侵入性,高成本的生物标志物评估.
- 这种方法提供了一种非侵入性的方法来分层早期认知/行为变化的个体.
- 这些发现支持使用纵向MRI来完善神经学中的诊断途径.
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