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探讨偏头痛发作间歇期的脑血流动力学改变。方法采用经颅多普勒（ＴＣＤ）技术，对１２０例偏头痛患者在头痛间歇期检测脑底动脉血流速度。结果ＴＣＤ异常率５２％，异常改变主要为平均血流速度增高、两侧血流速度不对称及出现血管杂音。普通和典型偏头痛两组间无显著差异（Ｐ＞０．０５）。结论本病脑血流速度增高可能系血管紧张度增加或动脉管腔的功能性狭窄所致。噪音性杂音的出现有助于本病的诊断。ＴＣＤ改变不能鉴别典型和普通型偏头痛。
To investigate the cerebral hemodynamic changes during the intermittent migraine attacks. Methods The transcranial Doppler (TCD) technique was used to detect the blood flow velocity in 120 patients with migraine during intermittent headache. Results The abnormal rate of TCD was 52%. The abnormal changes were mainly the increase of average blood flow velocity, asymmetry of blood flow velocity on both sides and vascular murmur. There was no significant difference between normal and typical migraine (P> 0.05). Conclusion The increased cerebral blood flow velocity may be due to increased vascular tone or arterial lumen stenosis. The appearance of noise murmur contributes to the diagnosis of this disease. TCD changes can not identify typical and common type of migraine.