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Mandibular Arteriovenous Malformation Diagnosed by MR and MRA: A Case Report

磁振造影術及磁振血管攝影術診斷下顎動靜脈畸型:一病例報告

摘要


下顎的動靜脈畸型的速正確診斷及適當的治療甚為重要,因拔牙或作切片檢查時會造成大量出血甚至死亡。傳統的血管攝影術仍然是診斷此動靜脈型生成最好方法。磁振造影術的自旋迴波序列對動靜脈畸型僅可藉由血流訊號流失的特性加以辨認,而磁振血管攝影卻更能把擴張的動靜脈病巢顯示出來,因此磁振造影術及磁振血管攝影術能補助傳統的血管攝影術來診斷下顎的動靜脈畸型。

關鍵字

無資料

並列摘要


A case of mandibular arteriovenous malformation (AVM) is presented. Prompt diagnosis and appropriate management are essential due to massive bleeding or even death after dental extraction or diopsy. Angiography remains the gold standard in detecting the lesion. Magnetic resonance (MR) imaging with spin-echo sequences reveals the vascular malformation as signal-void. MR angiography can demonstrate the nidus, dilated artery and vein. MR imaging and MR angiography can supplement angiography in the diagnosis of mandibular AVM.

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