排除(R/O)偏头痛

Steven Thibodeau, Ellen Grant
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引用次数: 0

摘要

当对头痛患者进行影像学检查时,目的是:(1)排除更不祥的头痛病因;(2)当怀疑是非典型或复杂偏头痛时,评估血流动力学和实质受累程度。标准图像允许排除其他病因,如肿块病变,MR静脉造影可以排除静脉窦血栓形成。对比检查可能有助于区分多发小转移灶、伴有炎症成分的脱髓鞘病变和皮质下梗死,以及与不增强的偏头痛相关的T2升高的非特异性灶。灌注加权成像可以检测血流动力学损害的评估。弥散加权成像,结合标准磁共振图像,可以评估实质受累情况。本单元包含可用于患者评估的基本方案,以及用于评估视觉先兆患者脑灌注的替代方案。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Rule Out (R/O) Migraine

When imaging patients with headaches, the goals are: (1) to rule out a more ominous etiology for their headaches and (2) to assess the degree of hemodynamic and parenchymal involvement when atypical or complicated migraine is suspected. The standard images allow other etiologies, such as mass lesions, to be excluded and an MR venogram can rule out venous sinus thrombosis. Contrast may be helpful in differentiating multiple small metastases, demylinating lesions with inflammatory components, and subcortical infarcts from the nonspecific foci of increased T2 associated with migraines that do not enhance. Perfusion-weighted imaging allows detection assessment of hemodynamic compromise. Diffusion-weighted imaging, in combination with the standard MR images, allows assessment of parenchymal involvement. This unit contains a basic protocol which can be used for the evaluation of patients as well as an alternative protocol for the assessment of cerebral perfusion in patients with visual auras.

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