Petri Honkanen

Actual news

10.6.2019 Message from Basil E. Grüter, participated as Petri Honkanen foundation award recipient to 19th Helsinki live demonstration course in microneurosurgery.
Read more

28.3.2019 Course stipend awarded.
Read more

5.3.2019 Helsinki 19th Course Award - search opened.
Read more.

News archive


Intracranial aneurysm is a pathological dilatation or bulge on the wall of an artery vascularizing the brain, often found at the branching site of the vessel. They are usually not congenital, but develop later in life. With time, the blood pressure and other factors may cause the aneurysm to grow and eventually rupture, causing a serious form of stroke called subarachnoid hemorrhage (SAH). SAH often affects people in working age, with the median age of 50-60 years. Known risk factors include female sex, hypertension, smoking and family history of SAH.

Overall, the risk of an adult person to suffer from SAH is 1 in 10,000 each year. For an unknown reason, this risk seems to be twice as high in some countries, Finland and Japan being the best known examples. On the other hand, however, at least 2-3% of adult population worldwide carry an unruptured aneurysm, meaning that most aneurysms never rupture and cause SAH. Ruptured aneurysms are fatal in 40-50% of the patients, and at least half of the survivors suffer from permanent neurological disability. Because of the severity of the disesase, unruptured aneurysms are often treated prophylactically when found, because we do not currently have reliable methods to predict which aneurysms are most prone to rupture, and which could be left untreated. As current treatment methods include sometimes severe risks, it would be desirable to target only those aneurysms that impose a significant danger to their carrier.

Petri Honkanen Foundation contributes to the research of the brain artery wall, risk of aneurysm rupture, SAH and the treatment of aneurysms and SAH. Petri Honkanen Foundation realizes its purpose by donating grants to talented researchers in the field.


The target of Petri Honkanen Foundation is primarily supporting research, which aims to develop methods to recognize the most rupture-prone intracranial aneurysms; to cure the aneurysm before the rupture; and to improve the outcome and prognosis of patients carrying aneurysms and/or suffering from SAH caused by aneurysm rupture.

The long-term goal of Petri Honkanen Foundation is to promote the development of new tools to estimate the rupture risk of an unruptured aneurysm as accurately as possible; as well as the development of safest and most effective methods to prevent the rupture with its often devastating sequlae.