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第十三章

第十三章. 食管与胃肠道. 学习目的. ● 掌握胃肠道各种检查的价值与限度 ● 能正确选择检查方法和病员如何准备检查 ● 掌握胃肠道常见疾病的影像学诊断基本知识. 一. X 线检查 : 低张 气钡双重造影法 二. CT 与 MRI 检查 : 主要用作肿瘤分期. 胃肠道检查技术. Barium study, double contrast technique. Angiography. Carcinoma of rectum. Carcinoma of esophagus. Carcinoma of stomach. 胃肠道正常影像 和基本病变. 正常表现.

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第十三章

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  1. 第十三章 食管与胃肠道

  2. 学习目的 ● 掌握胃肠道各种检查的价值与限度 ● 能正确选择检查方法和病员如何准备检查 ● 掌握胃肠道常见疾病的影像学诊断基本知识

  3. 一.X线检查:低张气钡双重造影法二.CT与MRI检查:主要用作肿瘤分期一.X线检查:低张气钡双重造影法二.CT与MRI检查:主要用作肿瘤分期 胃肠道检查技术

  4. Barium study, double contrast technique

  5. Angiography

  6. Carcinoma of rectum

  7. Carcinoma of esophagus

  8. Carcinoma of stomach

  9. 胃肠道正常影像 和基本病变

  10. 正常表现 观察内容: 粘膜:走行、光滑度、连续性、宽度 管壁:柔韧性,CT、MRI片上的厚度 管腔:大小,舒缩度,钡剂通畅度 器官:位置,动度

  11. •正常形态:扩张时呈带状, 边缘光整, 宽2~3cm•临床分段:上段、中段、下段(主A弓~T8水平) •两个生理性狭窄:食道入口、膈裂孔•三个生理性压迹:主动脉弓、左主支气管、左心房•粘膜皱襞形态: 呈纵形细条纹状影, 宽度<2mm•蠕动:第一蠕动波、第二蠕动波、第三收缩波•胃食管前庭段与食管胃角(贲门切迹) 食 管

  12. 食管 粘膜相 充盈相 DC相 CT

  13. 正常食管,三个生理压迹

  14. 粘膜皱襞 粘膜沟 粘膜放大像

  15. 食管粘膜相

  16. • 各部位名称• 粘膜皱襞 显示为黑白相间的条索状影胃窦:以纵形为主, 宽度<3mm小弯侧:规则, 与小弯平行, 宽度3~4mm大弯侧及胃底:大弯侧横、斜形较多, 胃底略呈 网状. 胃体与胃底宽度<5mm微皱襞:即胃小区, 由胃小沟勾划形成, 如鱼网状 胃小区直径1~3mm, 胃小沟宽度<1mm 胃

  17. • 蠕动:胃体呈波浪状, 胃窦呈向心性收缩• 排空时间: 2~4小时 • 幽门管:长约5mm, 宽度变化较大

  18. 正常胃各部名称

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