anterior communicating artery
The anterior communicating artery (ACOM) arises from the anterior cerebral artery and acts as an anastomosis between the left and right anterior cerebral circulation. Approximately 4 mm in length, it demarcates the junction between the A1 and A2 segments of the anterior cerebral artery.
Branches
The ACOM gives off numerous small branches that go on to supply the following structures:
- cingulate gyrus
- anterior columns of the fornix
- optic chiasm
- lamina terminalis
- hypothalamus
- para-olfactory areas
Variant anatomy
- ACOM duplication: incidence 18%
- ACOM fenestration: incidence ~15% (range 12-21%)
- ACA trifurcation arising from the ACOM: incidence ~7.5% (range 2-13%)
- absent ACOM: incidence 5% (surgical dissection)
If the vessel is not well seen on routine angiography, cross-compression view of the ACA/ACOM complex can be performed.
Siehe auch:
- Arteria cerebri anterior
- Hypothalamus
- Aneurysma Arteria communicans anterior
- Fistel Arteria communicans anterior
- rupturiertes Aneurysma der Arteria communicans anterior
und weiter:
Assoziationen und Differentialdiagnosen zu Arteria communicans anterior:
