硬膜下积液一般发生在一侧或双侧额颞骨内板下方[1] 。而大脑镰旁硬膜下积液 (ｓｕｂｄｕｒａｌｆｌｕｉｄａｃｃｕｍｕｌａｔｉｏｎｂｅｓｉｄｅｃｅｒｅｂｒａｌｆａｌｘ ,ＳＦＡＣＦ)较少见 ,本文通过 15例ＳＦＡＣＦ的ＣＴ征象分析 ,探讨其影像特点。1　材料与方法1.1　选 Subdural effusion generally occurs in one side or bilateral frontotemporal inner plate [1]. Subacral subdural fluid subdural fluid syndrome (subacralfluidaccumulationbesidecerebralfalx, SFACF) is rare, this article by 15 cases of SFACF CT signs, to explore the imaging features. 1 Materials and Methods 1.1 election