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題 名 | Dissection of Internal Carotid Artery: Diagnosis with Color Doppler Sonography and MR Angiography Correlation=彩色都卜勒超音波用於診斷內頸動脈剝離之評估 |
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作 者 | 秦嗣騏; 陳震宇; 吳清俊; 徐先和; 阮春榮; 薛俊仁; 蕭海松; | 書刊名 | 中華放射線醫學雜誌 |
卷 期 | 24:1 1999.02[民88.02] |
頁 次 | 頁9-14 |
分類號 | 415.2168 |
關鍵詞 | 超音波; 彩色超音波; 剝離; 內頸動脈; 磁振造影術; 磁振血管造影術; Sonography; Color Doppler sonography; Dissection; Internal carotid artery; Magnetic resonance; MR; Magnetic resonance angiography; MRA; |
語 文 | 英文(English) |
中文摘要 | 我們報告並分析八個經彩色都卜勒超音波診斷並由磁振血管造影術證實為內頸動脈剝離的病例。根據都卜勒超音波檢查,內頸動脈剝離的直接証據有:內頸動脈逐漸變細,被剝離的血管內膜(intimal flap)和管腔內出現低回音(hypoechoic)的血栓,以及在彩色超音波上觀察到真偽管腔中方向相反的血流。間接証據是:頸動脈分岔與顱外近端的內頸動脈雖然暢通,並且在灰階超音波檢查時管壁上並未呈現動脈硬化之內膜增厚現象,但是在都卜勒波形分析時卻在收縮期呈現很小的血流訊號,由此推測是由非動脈硬化所造成的遠端血管狹窄或阻塞。根據我們的分析,彩色都卜勒超音波除了可以提供血管結構的灰階超音波影像,更能提供實時間的血流動力學資訊來診斷內頸動脈剝離,誠為一項篩檢與追蹤評估預後的好工具。 |
英文摘要 | We present findings ofextracranial color Dopplersonography in patients withinternal carotid artery dissectionconsistent with those of magneticresonance (MR) angiography. Incolor Doppler sonography, thedirect diagnostic signs likely to bepresent are linear hyperechoicintimal flap crossing the vessellumen, eccentric hypoechoicthrombus formation, bi-directionalflow in the true and false lumen,respectively and damped systolicspectral waveform with reversediastolic flow. Indirect signsindicating internal carotid arterydissection are biphasic Dopplerwaveform and regional turbulentflow. In addition, the absence ofatherosclerotic wall change is animportant finding suggestive ofnonatherosclerotic stenosis orocclusion. These findings indicatethat color Doppler sonographycombined with MR angiographymay be an alternative diagnostictool to the conventionalangiography in the confirmationdiagnosis of the dissection ofinternal carotid artery. ColorDoppler sonography still can notentirely replace the angiographicstudy; Color Doppler sonographyhelps to indicate angiography and serves as an alternative duringfollow-up studies. Sequentexaminations prove helpful indetermining the duration ofanticoagulant treatment. |
本系統中英文摘要資訊取自各篇刊載內容。