Materials and Methods 69 metastatic ce rvical lymph nodes of nasopharyngeal carcinoma were studied with Colo r Doppler Flowing Imaging (CDFI) measuring the blood supply before irra diation.

• 材料与方法观察69个鼻咽癌患者颈淋巴结转移病灶的退缩程度及速度，采用彩色多普勒超声测量法测定颈淋巴结转移病灶放疗前血供情况。