CT扫描以oml为基线向上扫描至颅底，向下扫描包括鼻咽及颈部。

OML. as baseline of CT scan, include cephalad for skull base, and caudad for nasopharynx and cervical.

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CT扫描以oml为基线向上扫描至颅底，向下扫描包括鼻咽及颈部。

OML. as baseline of CT scan, include cephalad for skull base, and caudad for nasopharynx and cervical.

youdao