分布于肺外支气管的动脉有由颈总动脉发出的支气管支。

The bronchi were supplied by the branch of bronchus coming from the common carotid artery.

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结果7例（ 63 .6% ）为多病灶，可见短毛刺及小空洞，其中6例（ 85 .7% ）出现“晕”征，3例支气管壁增厚及支扩；

Results Seven cases (63.6%) have multiple lesions with short burr and small cavity. Six (85.7%) of them have "halo" sign and 3 have bronchial ectasia.

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目的研究支气管扩张(支扩)病人的肺高分辨率CT的呼气相表现。

Objective to study the findings on expiratory HRCT scan in patients with bronchiectasis.

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