Fujita Nobuya, Yamanaka Toshiaki, Hosoi Hiroshi
Department of Otolaryngology, Nara Medical University, 840 Shijo, Kashihara City, Nara, 634-8522, Japan.
Auris Nasus Larynx. 2002 Jul;29(3):247-52. doi: 10.1016/s0385-8146(02)00016-0.
Syndromal vertigo is defined as a combination of vestibular function disturbance and cranial nerve or cerebral function disturbance. There is evidence that MR angiography (MRA), providing angiogram-like images of the intracranial and extracranial arterial flow, could replace invasive methods for diagnosing central vertigo. The purpose of this study was to provide simplified MRA criteria for identifying morbidity and to analyze the relation between imaging findings and clinical manifestations.
Thirty-three individuals with symptoms of syndromal vertigo and vertebrobasilar territory disease were examined by equilibriometry, MR imaging (MRI) and MRA.
Under MRA, vertebral artery (VA) stenosis was more common than VA occlusion (23 vs. nine cases, respectively). A basilar artery (BA) deviation was found in eight cases (24.2%). Twenty-five VA or BA abnormalities (75.8%) were found, and eight combined VA and BA abnormalities (24.2%) were found.
We emphasize three points as follows. MRA is advantageous over conventional angiography for less invasive method. MRA can reveal abnormalities even in cases of 'solo-vertigo' with no observed neurologic abnormalities. In our series, abnormalities were confirmed by MRA even in cases with no concomitant such as hypertension, coronary heart disease, or diabetes mellitus, which are regarded as latent risk factors for stroke.
综合征性眩晕被定义为前庭功能障碍与颅神经或脑功能障碍的组合。有证据表明，磁共振血管造影（MRA）可提供颅内和颅外动脉血流的类似血管造影的图像，能够替代侵入性方法来诊断中枢性眩晕。本研究的目的是提供简化的MRA标准以识别发病率，并分析影像学表现与临床表现之间的关系。
对33例有综合征性眩晕症状和椎基底动脉区域疾病的患者进行了平衡功能测定、磁共振成像（MRI）和MRA检查。
在MRA检查中，椎动脉（VA）狭窄比VA闭塞更常见（分别为23例和9例）。发现8例基底动脉（BA）偏移（24.2%）。发现25例VA或BA异常（75.8%），8例VA和BA联合异常（24.2%）。
我们强调以下三点。MRA作为侵入性较小的方法比传统血管造影更具优势。即使在未观察到神经学异常的“单纯眩晕”病例中，MRA也能揭示异常。在我们的系列研究中，即使在没有高血压、冠心病或糖尿病等被视为中风潜在危险因素的伴随疾病的病例中，MRA也证实了异常。
