https://scholars.lib.ntu.edu.tw/handle/123456789/198034
標題: | Imaging in the Diagnosis and Follow-up Evaluation of Vertebral Artery Dissection | 作者: | LU, CHIEN-JUNG HWANG, BAO-SHOW LIN, WIN -HWAN YIP, PING-KEUNG |
關鍵字: | dissection;vertebral artery;extracranial color-flow duplex sonography;transcranial color-coded sonography;MR- ANGIOGRAPHY;ULTRASOUND | 公開日期: | 2000 | 卷: | v.19 | 期: | n.4 | 起(迄)頁: | 263-270 | 來源出版物: | JOURNAL OF ULTRASOUND IN MEDICINE | 摘要: | The purpose of this report is to discuss the value of ultrasonographic examination in the diagnosis and follow-up evaluation of vertebral artery dissection. We collected data on 8 patients with 11 pathologic vessels: 9 were affected intracranially and 6 were affected extracranially. Four vessels were affected in both intracranial and extracranial segments. Extracranial color-flow duplex sonography could detect abnormalities in every extracranial vertebral artery dissection. Most abnormal findings were nonspecific, including severely reduced flow, absence of flow, and absence of diastolic flow. A specific finding (intramural hematoma) was noted in one artery. Abnormal transcranial color-coded sonographic findings included absence of flow, reduced velocity and reversed flow direction. Three intracranial dissecting arteries showed normal findings on transcranial color-coded sonography. Ultrasonographic follow -up study revealed evidence of improvement; this was noted almost exclusively in the extracranial segments of the vertebral artery but infrequently in the intracranial segment. Extracranial color-flow duplex sonography is sensitive in the detection of extracranial vertebral artery dissection, both in initial diagnosis and in follow-up evaluation. |
URI: | http://ntur.lib.ntu.edu.tw//handle/246246/99652 |
顯示於: | 醫學系 |
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