Fat-extracting range was marked at the obvious region of fat cumulating and bulging locally of the hypogastric zone, and up-left, down-left, up-right and down-right 4 adjacent regions were designed. 用亚甲蓝于脐下缘标记一长约1cm的弧形切口,在下腹部局部脂肪堆积隆起明显处标记出吸脂范围、并设计左上、左下、右上、右下4个相邻区域。