磁共振成像及磁共振血管造影在搏动性耳鸣评估中的应用
MR imaging and MR angiography in the evaluation of pulsatile tinnitus.
作者信息
Dietz R R, Davis W L, Harnsberger H R, Jacobs J M, Blatter D D
机构信息
Department of Radiology, University of Utah Medical Center, Salt Lake City 84132.
出版信息
AJNR Am J Neuroradiol. 1994 May;15(5):879-89.
PURPOSE
- To evaluate the scope of imaging findings seen with spin-echo MR and MR angiography (MRA) in patients with pulsatile tinnitus; 2) to determine whether MRA adds additional imaging information (to that provided by spin-echo MR) necessary for determining the cause of pulsatile tinnitus; and 3) to suggest MR and MRA imaging techniques for evaluation of patients with pulsatile tinnitus.
METHODS
Forty-nine patients with pulsatile tinnitus were evaluated with MR and MRA. Seventeen of these patients had conventional angiography.
RESULTS
Vascular lesions or paraganglioma were demonstrated in 28 patients. Of these 28 lesions, the majority were seen best (46%) or only (36%) on MRA. The spectrum of lesions detected included dural arteriovenous fistula (nine), extracranial arteriovenous fistula (three), paraganglioma (five), jugular bulb variants (three), aberrant internal carotid artery (one), internal carotid artery stenosis (one), tortuous internal carotid artery (one), carotid dissection with pseudoaneurysm (one), stenosis of the transverse sinus (two), and arteriovenous malformation (two).
CONCLUSIONS
MRA, in conjunction with spin-echo imaging, markedly enhances the ability of MR to diagnose the lesions responsible for pulsatile tinnitus.
目的
1）评估自旋回波磁共振成像（MR）和磁共振血管造影（MRA）在搏动性耳鸣患者中的成像表现范围；2）确定MRA是否能为确定搏动性耳鸣的病因提供（除自旋回波MR所提供信息之外的）额外成像信息；3）提出用于评估搏动性耳鸣患者的MR和MRA成像技术。
方法
对49例搏动性耳鸣患者进行了MR和MRA检查。其中17例患者进行了传统血管造影。
结果
28例患者显示有血管病变或副神经节瘤。在这28个病变中，大多数（46%）或仅（36%）在MRA上显示最佳。检测到的病变谱包括硬脑膜动静脉瘘（9例）、颅外动静脉瘘（3例）、副神经节瘤（5例）、颈静脉球变异（3例）、颈内动脉异常（1例）、颈内动脉狭窄（1例）、颈内动脉迂曲（1例）、伴有假性动脉瘤的颈动脉夹层（1例）、横窦狭窄（2例）和动静脉畸形（2例）。
结论
MRA与自旋回波成像相结合，显著提高了MR诊断引起搏动性耳鸣病变的能力。
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