这个词是什么意思？
A non-invasive technique using ultrasound for the measurement of cerebrovascular hemodynamics, particularly cerebral blood flow velocity and cerebral collateral flow. With a high-intensity, low-frequency pulse probe, the intracranial arteries may be studied transtemporally, transorbitally, or from below the foramen magnum.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D017585 · MeSH 2026。
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