Combes Damien, Tanguy Jean-Yves, Annweiler Cédric, Labriffe Matthieu
Département de radiologie, CHU d'Angers, France.
Département de gériatrie et Centre mémoire ressources recherche, Centre de recherche sur l'autonomie et la longévité, CHU d'Angers, France.
Geriatr Psychol Neuropsychiatr Vieil. 2020 Mar 1;18(1):7-18. doi: 10.1684/pnv.2019.0819.
The hippocampus is a small internal temporal cerebral structure, which plays a primordial role in the mechanisms of memory. Magnetic resonance imaging (MRI) is the reference imaging modality for the hippocampal analysis. In older adults, dementia represents the majority of hippocampal diseases, but other specific pathologies must be known in the differential diagnosis. Many hippocampal abnormalities are represented by a loss of substance (atrophy). However, most acute or recent hippocampal damage is detected by MRI signal abnormalities. The aim of this article is to offer a pictorial review of the normal and pathological hippocampal aspects of older adults, during degenerative, infectious, vascular, inflammatory, tumoral, toxic and metabolic disorders.
海马体是颞叶内一个较小的脑结构，在记忆机制中起着重要作用。磁共振成像（MRI）是海马体分析的参考成像方式。在老年人中，痴呆症是大多数海马体疾病的代表，但在鉴别诊断中必须了解其他特定病理情况。许多海马体异常表现为实质丧失（萎缩）。然而，大多数急性或近期的海马体损伤是通过MRI信号异常检测到的。本文旨在对老年人在退行性、感染性、血管性、炎症性、肿瘤性、中毒性和代谢性疾病期间海马体的正常和病理情况进行图文综述。
