Ocena ryzyka pęknięcia tętniaków mózgowych

• Autorzy: Szarafiński K.

Warianty tytułu

EN

Evaluation of rupture risk of intracranial aneurysms

• Języki publikacji: PL

Abstrakty

PL

Artykuł omawia nowe koncepcje oceny ryzyka pęknięcia tętniaków wewnątrzczaszkowych na podstawie parametrów geometrycznych i hemodynamicznych układu tętniak-tętnica-krew. Wiele systemów decyzyjnych opartych jest głównie na rozmiarach tętniaka oraz częstości krwawień podpajęczynówkowych. Na podstawie badań symulacyjnych wykazano, że możliwa jest kompleksowa ocena przypadków klinicznych na podstawie takich parametrów, jak współczynnik kształtu i współczynnik wielkości tętniaka wtórnego powstającego na powierzchni tętniaka pierwotnego, szerokość szyi tętniaka pierwotnego, stopień zakrzywienia tętnicy, na której położony jest tętniak pierwotny, oraz wielkość obszaru oddziaływania krwi na ścianę tętnicy. W pracy przedstawiono doniesienia oraz wyniki badań symulacyjnych ewolucji wzrostu tętniaka pierwotnego z tętniakiem wtórnym na jego powierzchni oraz oddziaływania krwi na układ tętniak-tętnica dla zmiennej szerokości szyi tętniaka i krzywizny tętnicy. Dokonano także weryfikacji zaproponowanych kryteriów oceny ryzyka dla 5 przypadków klinicznych tętniaka pierwotnego z tętniakiem wtórnym na jego powierzchni.

EN

The paper presents a new concept of evaluation of rupture risk of intracranial aneurysms using geometric and hemodynamic parameters of aneurysm, artery and blood. Existing decision systems are based mainly on the size of an aneurysm and frequency of subarrachnoid haemorrhages. From the simulation tests it was proved that the complex assessment of clinical cases is possible by evaluation of shape and size of a secondary aneurysm occurring on the surface of a primary aneurysm, the width of a primary aneurysm neck, the curvature of an artery with a primary aneurysm and the area of blood interaction at artery wall. The paper shows results of simulation tests of growth evolution of primary and secondary aneurysm, blood impingement on an aneurysm and an artery for a variable width of an aneurysm neck and a variable artery curvature, as well as verification ofproposed criteria of risk evaluation for 5 clinical cases of a primary and a secondary aneurysm.

Słowa kluczowe

PL

krzywizna tętnicy; naprężenie styczne ścian; ryzyko pęknięcia; względne naprężenie rozciągające ścian; szerokość szyi tętniaka; profil prędkości Womersleya

EN

artery curvature; wall shear stress; rupture risk; relative wall tensile stress; width of aneurysm neck; Womersley velocity profile

• Wydawca: Jacek Doskocz
• Czasopismo: Acta Bio-Optica et Informatica Medica. Inżynieria Biomedyczna
• Rocznik: 2008
• Tom: Vol. 14, nr 2
• Strony: 153--159
• Opis fizyczny: Bibliogr. 46 poz.

Twórcy

autor

Szarafiński K.

• Wydział Elektryczny Instytut Elektroniki, Telekomunikacji i Informatyki Politechnika Szczecińska, 71-126 Szczecin, ul. 26 kwietnia 10, tel. [phone],

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