晕厥的原因包括任何可以暂时性减少脑灌注的病变。

Causes of syncope include any process that transiently reduces cerebral perfusion.

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目的：为了获取甲状腺良性肿块血流灌注的立体结构。

Objective: To obtain stereoscopic structure of blood stream perfusion in thyroid benign tumor.

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对老年人选择再灌注的策略，以及辅助治疗和并发症的治疗还需要试验研究。

Additional data are needed on selection and dosing of adjunctive therapies and on complications in the elderly.

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