A flow diverter is an endovascular prosthesis used to treat intracranial aneurysms.

[1] It is placed in the aneurysm's parent artery, covering the neck, in order to divert blood flow and determine a progressive thrombosis of the sac.

[7] The efficacy of flow diverters can be evaluated using a grading system developed by researchers at Oxford Neurovascular and Neuroradiology Research Unit (Kamran et al. 2011), commonly referred to as flow diverter grading system or Kamran grading system.

[8] After receiving a cerebral flow diverter, patients are placed on dual antiplatelet therapy for an extended period of time to reduce the likelihood of peri-procedural and post-procedural thromboembolic complications.

It has also been used and adapted by researchers to evaluate and report the effectiveness of flow diverters in general.