From the case: Aplastic A1 on MRA

MRI
Axial MRA
Modality: MRI (MRA)

- “ Nice example of a common variant of the circle of willis where the right A1 is tiny and the right A2 is supplied by a large Acom. ”

Used in the following article:

  • Anterior cerebral artery - “ The anterior cerebral artery along with the middle cerebral artery forms at the termination of the internal carotid artery. It is the smaller of t...”
  • Intracranial arteries (variants) - “ Intracranial arterial variants, of which there are many, are collectively common. Their clinical significance may be variable but knowledge and re...”

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