翻译：DSA is considered the gold standard for diagnosing carotid artery disease1920 However due to its invasive nature DSA involves radiation exposure and is relatively costly
DSA被认为是诊断颈动脉疾病的黄金标准（19,20）。然而，由于其侵入性，DSA涉及辐射暴露并且相对昂贵。
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