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亚段学习笔记

  • 2026-05-07 21:08:23
亚段学习笔记
两肺18个肺段，每个肺段各有2个亚段，而两肺的背段、后基底段及左肺固有上叶两个肺段各3个亚段，因此18*2+6=42，共42个亚段。
亚段命名：以方位命名。
存在三对位置关系：头侧（颅侧）-足侧（尾侧）、外侧-内侧（纵隔侧）、后（背侧）-前（腹侧）。亚段的走行方向命名，如朝头侧走行命名为尖支、上支，朝外侧走行为外侧支，朝内侧走行为内侧支。位置关系是相对的。
这三项命名原则均以颅侧（头侧）为最高优先级。在对支气管进行命名时，若出现尾侧与背侧、或颅侧与腹侧的方位命名冲突，均以指向颅侧的支气管为优先命名对象。同一级的两个分支，一个朝头侧、一个朝背侧，会把数字/字母序号优先分配给头侧的那支。
亚段的分支是存在变异的，如常见的右肺尖段的亚段可能是从前段或后段分出，但它仍然属于尖段的亚段，因为段/亚段支气管的命名，也是结合支气管的走行路径与分布区域确定的。
参考文献：Kurimoto N, Morita K. Bronchial Branch Tracing[M]. Springer Nature Singapore Pte Ltd, 2020.
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  1. CONNECT:[ UseTime:0.000380s ] mysql:host=127.0.0.1;port=3306;dbname=no_67808;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.000575s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.000296s ]
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  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.000503s ]
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  9. UPDATE `article` SET `lasttime` = 1778168010 WHERE `id` = 486791 [ RunTime:0.000932s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000240s ]
  11. SELECT * FROM `article` WHERE `id` < 486791 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.008183s ]
  12. SELECT * FROM `article` WHERE `id` > 486791 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.003152s ]
  13. SELECT * FROM `article` WHERE `id` < 486791 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.011672s ]
  14. SELECT * FROM `article` WHERE `id` < 486791 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.017651s ]
  15. SELECT * FROM `article` WHERE `id` < 486791 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.001383s ]
0.121302s