偏头痛机理的研究往往集中于颈外动脉及其分枝的扩张及搏动增强,而对颞动脉直径,以往一直采用间接方法测量。本研究采用新的、高分辨力超声仅直接测定颗动脉直径,以了解偏头痛时是否存在患侧颞动脉扩张。 Studies of migraine mechanisms tend to focus on the dilatation and pulsatile enhancement of the external carotid artery and its branches, whereas the temporal artery diameter has been measured indirectly using indirect methods. In this study, new, high-resolution ultrasound was used to directly measure the diameter of the arterioles in order to understand whether there is ipsilateral temporal artery dilatation during migraine.