giải phẫu động mạch não trên lều
TRANSCRIPT
Giải phẫu động mạch não trên lều
BS. Trịnh Minh Tùng
ICA
• C1: cervical
• C2: petrous
• C3: lacerum
• C4: cavernous
• C5: clinoid
• C6: Ophthalmic
• C7: Communicating
• C1: Cervical: Common Carotid Artery Bifurcation – Carotid canal of Petrous bone
• C2: Carotid canal of Petrous bone- inferior edge of foramen lacerum
C3
• C3: foramen lacerum- petrolingual ligament
• C4: petrolingual ligament- proximal dural ring
• C5: proximal dural ring – distal dural ring
• C6:distal dural ring - proximal pcomm origin
• C7: proximal pcomm origin- Bifurcation
Differentiating Pcomm from Ach
• Proximal
• Larger
• Goes up or down a little- Straight back
• Ach: superior hump
ACA
• A1: origin – acomm• A2: acomm-
callosalmarginal a.• A3:callosalmarginal a.
– 3cm posterior to genu
• A4: pericallosal a• A5: terminal branch
ACA branches
• Recurrent a.• Frontal polar a.• Medial
Frontalorbital a.• Callosomarginal• Pericallosal
MCA
• M1: ICA bifurcation – MCA bifurcation
• M2: MCA bifurcation -emergence from Sylvian fissure
• M3,4: distal branches
• M5: terminal branch
• Anterior temporal• Posterior temporal• Lateral Orbitalfrontal• Ascending Frontal• PreRolandic• Rolandic• Anterior parietal• Posterior Parietal• Angular• Lateral
lenticulostriate
PCA
• P1: origin – pcomm origin• P2: pcomm origin- inf
temporal origin• P3: inf temporal origin-
origin of terminal branches
• P4: segment after origin of parieto-occipital calcarine a
• P1: origin – pcomm origin• P2: pcomm origin- inf
temporal origin• P3: inf temporal origin-
origin of terminal branches
• P4: segment after origin of parieto-occipital calcarine a
Circle of Willis
Artery distribution