创伤性脑损伤原发病灶周围存在继发性脑损伤区域,而这些继发损伤具有可恢复的潜能,称为创伤性半暗带。脑创伤病程进展在很大程度上与半暗带有关。明确创伤性半暗带的形成及病理生理机制,了解其影像学变现,以早期判定创伤性半暗带并及时采取干预措施,对挽救可恢复脑组织具有重要意义。本文对脑创伤周围半暗带的研究进展予以综述。 There are areas of secondary brain injury around the primary lesion of traumatic brain injury, and these secondary injuries have a recoverable potential called traumatic penumbra. The progression of brain trauma is largely related to the penumbra. To clarify the formation of traumatic penumbra and its pathophysiological mechanism, to understand its imaging findings, to early determine traumatic penumbra and timely interventions, to save recoverable brain tissue is of great significance. This article reviews the research progress of penumbra around brain trauma.