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目的 探讨稳定期双相障碍Ⅰ型(bipolar disorder type Ⅰ,BD-Ⅰ)患者大脑灰质结构特点,并进一步比较不同心境稳定剂对患者大脑灰质体积的影响.方法 采用基于体素的形态学测量(voxel-based morphometry,VBM)方法分析35例稳定期BD-Ⅰ患者与30例健康对照的大脑局部灰质体积.根据服用不同心境稳定剂,将患者组分为碳酸锂组和丙戊酸钠组,采用单因素方差分析比较三组被试大脑灰质体积差异.结果 与健康对照组相比,BD-Ⅰ患者在额叶内侧[MNI坐标(x,y,z):2,34,-18]、眶前额叶[MNI坐标(x,y,z):-32,22,-4]、额叶岛盖[MNI坐标(x,y,z):38,18,4]和脑岛[MNI坐标(x,y,z):-32,22,-4]等脑区灰质体积显著减小,差异有统计学意义(P＜0.05).碳酸锂组与丙戊酸钠组患者大脑灰质体积差异无统计学意义(P＞0.05).结论 BD-Ⅰ患者情绪失调可能与额叶内侧、眶前额叶、额叶岛盖及脑岛等脑区灰质体积减小有关;服用碳酸锂与丙戊酸钠对BD-Ⅰ患者大脑灰质体积影响无明显差异.“,”Objective To investigate the abnormal change of gray matter volume in patients with euthymic bipolar disorder Ⅰ (BD-Ⅰ),and to elucidate the relationship between the use of different mood stabilizers and brain structure variations.Methods Voxel-based morphometry (VBM) was used to analyze the volume of local gray matter in 35 patients with BD-Ⅰ and 30 healthy controls(HC).The patients were divided into BD-Ⅰ with lithium group and BD-Ⅰ with valproate group according to different mood stabilizers.The volume differences of gray matter of the three groups were compared by one-way ANOVA.Results Compared with HC,BD-Ⅰ patients showed significantly reduced gray matter volume in the medial frontal cortex (MNI (x,y,z):2,34,-18),orbital frontal cortex (MNI(x,y,z):-32,22,-4),frontal operculum (MNI(x,y,z):38,18,4) and insula cortex (MNI(x,y,z):-32,22,-4) (P＜0.05).There was no significant difference in thevolume of gray matter between BD-Ⅰ with lithium group and BD-Ⅰ with valproate group(P＞0.05).Conclusion Emotional disturbance in patients with BD-Ⅰ may be associated with reduced gray matter volume in the medial frontal cortex,orbital frontal cortex,frontal operculum and insula cortex.There are not significant difference about the effects of lithium carbonate and valproate on cerebral gray matter volume in patients with BD-Ⅰ.