To evaluate the usefulness of ophthalmic artery (OA) color Doppler flow imaging (CDFI) in the occlusive internal carotid artery (ICA) diseases, the authors examined OA CDFI findings.
Materials and Methods : OA CDFI was performed in 140 patients to determine OA flow direction, waveform and peak systolic flow velocity (PSV) . Revascularization surgery was performed in 41 patients.
Results : 1) Twenty-four patients showed a reversed waveform pattern. Among these, 18 patients (74%) had ICA occlusion and the other 6 patients (27%) had more than 70% ICA stenosis. 2) Thirty-four patients demonstrated the arch stenotic waveform. More than 50% ICA stenosis was seen in 16 patients (48%), and ICA occlusion was seen in 26% of cases. 3) We observed a sclerotic waveform in 19 patients. Four patients showed another type of abnormal waveform, and 59 patients showed the normal waveform. Among the 59 patients showing the normal waveform, 16 patients (27%) had more than 50% ICA stenosis. 4) In 15 patients who received superficial temporal artery to middle cerebral artery bypass, the patients with preoperative reversed waveform showed a significant (p<0.05) improvement of the flow direction and PSV during the postoperative stage. In 26 patients who received carotid endarterectomy, the OA CDFI findings significantly improved immediately after surgery (p<0.05) .
Conclusion : OA CDFI shows good correlation with occlusive ICA diseases and reflects the effects of revascularization surgery.
抄録全体を表示