2011年05月05日

标签:
杂谈 |
分类: 我的医学影像世界 |
颈内动脉分段
颈内动脉分7个解剖段:
C1:颈段;
C3:破裂孔段; C4:海绵窦段;
C5:床突段;
http://b45.photo.store.qq.com/http_imgload.cgi?/rurl4_b=6bb694cd31bdf83797fb245c27e49e7cbef3d43a4ad1f17a035f36aa9612697ba5976d215d4acd771c2d520fda95826081de730435da4feb04db4c00726775f5ef35d1d87f9cd39c4e2f4f175636fbfedcd0f7c8&a=42&b=45
C1段(颈段):
颈内动脉在C4平面分出,进入颞骨岩部的颈动脉管后C1段终止。
C2段(岩段):
全程均在颈动脉管内,分垂直段及水平段,如倒“L”形(黑箭),圆圈代表颅外及颅内颈动脉管的开口,平行黑线代表岩舌韧带,白箭示破裂孔段。
http://b45.photo.store.qq.com/http_imgload.cgi?/rurl4_b=6bb694cd31bdf83797fb245c27e49e7c8407f0f1321e37560d394af594a1ffbe53109c2fce476064970b477b559681c9c2482475f710032dd14508d5338c971698281e1247feab27da04a39fbfbcf1debe417fca&a=46&b=45
C3段(破裂孔段):
C4段(海绵窦段):
始于岩舌韧带上缘,穿过硬膜环而出海绵窦。
C5段(床突段):
始于近侧硬膜环,止于ICA进入蛛网膜下腔外的远侧硬膜环,为硬膜间结构。
C6段(眼段):
起自远侧硬膜环,止于PCoA起点近侧。
C7段(交通段):
起自PCoA起点近侧,止于ACA及MCA分叉处。
分支:①PCoA;②AChA(脉络膜前动脉):供应视束、内囊后肢、大脑脚、脉络丛及颞叶内侧;③ACA及MCA。http://b45.photo.store.qq.com/http_imgload.cgi?/rurl4_b=6bb694cd31bdf83797fb245c27e49e7ce6c3fd425582377bf7eda69894dde950d81abef5aebfab184437d88dba873bcb78b4a7986cfaeb2e1e8d9fe59d3eefd14ab4b5baf7eb253dbbde8735b0904f91d0e6f27e&a=47&b=45
http://b42.photo.store.qq.com/http_imgload.cgi?/rurl4_b=6bb694cd31bdf83797fb245c27e49e7cfc8afa940a00c39e12389bb093d40d004d0d6ea3f3bccb38e7cadf0b80674539030e4b95c251c1beea86c0613db481f0f376587596145d1058fb2f4d1cc0013afeea01d1&a=46&b=42
http://b38.photo.store.qq.com/http_imgload.cgi?/rurl4_b=6bb694cd31bdf83797fb245c27e49e7cc261c97cb74c94c94634eeba43962ab461d3f5ac9d32c4b2a7bb6c6c0c10fb40a74608e746d19ee45a8849d5e35da05a6aa4580e184b4edd5f4167a7c94651b24e67c4a2&a=35&b=38
http://b35.photo.store.qq.com/http_imgload.cgi?/rurl4_b=6bb694cd31bdf83797fb245c27e49e7c44eed2884dcc4021ff0c4de490dae081c5e605847945e31540d7d418b4241a40eccde155c98ec64a1a5ab6f30bcf3a58fb5e8050d9436ff74be30792d7e454037e5738dd&a=45&b=35
http://b46.photo.store.qq.com/http_imgload.cgi?/rurl4_b=6bb694cd31bdf83797fb245c27e49e7c52c299d434ce1d1a97bb471d62662c8b81f4ec6adef97c54a2bbb95ff90b4315d3a292cf481cd39c553c8b0c19d868241dacb350fa76c981861013b00e93f311eac5f48a&a=47&b=46
http://b41.photo.store.qq.com/http_imgload.cgi?/rurl4_b=6bb694cd31bdf83797fb245c27e49e7c218d97e6b7028f21149bd1427be7c6b6a66a6f68464bcfdf71a209acd54573b20b8862d8703f247828438c2a3ea7258ce6bb34f6ab40aff3da1a5e50853d60a482cc28c8&a=45&b=41