集中的一点是气管和支气管分叉的地方。
One point of concentration is where the air tube and bronchus divides.
当扫描层面和它们的长轴平行时，肺动脉分支和支气管呈圆柱状或远端变细分叉，这取决于它们在扫描层面内的长度和走行。
When imaged along their axis, bronchi and vessels should appear roughly cylindrical, or show slight tapering as they branch, depending on the length of the segment that is visible.
当扫描层面和它们的长轴平行时，肺动脉分支和支气管呈圆柱状或远端变细分叉，这取决于它们在扫描层面内的长度和走行。
When imaged along their axis, bronchi and vessels should appear roughly cylindrical, or show slight tapering as they branch, depending on the length of the segment that is visible.
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