Med Biol Eng Comput - Performance assessment of isolation methods for geometrical cerebral aneurysm analysis.

Tópicos

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Resumo

Geometrical aneurysm quantification is considered an important topic for the study of aneurysm formation, growth, risk of rupture and also in treatment planning. Usually, quantification involves aneurysm isolation, consisting in the operation of detecting the boundary between the aneurysm dome and its feeding arteries. This operation is sometimes performed manually, but it is a tedious task, subject to user variability. To obtain reproducible measurements, automatic techniques have been proposed. In this paper, we compare different aneurysm isolation techniques, two automatic and one manual-based on a cutting plane. All of them are compared against the results obtained by manual delineations of 26 real cases. We show from the results that automatic methods have good performance, providing results similar to manual methods in average. We also show that automatic methods improve reproducibility compared to direct measurements performed on volume rendering views. Each automatic method presents strengths and weaknesses in particular cases such as small aneurysms, aneurysms with multiple parent vessels or terminal aneurysms, but their reproducibility makes them suitable for robust population studies. Finally, based on this study, we have proposed a criterion that allows to use a combination of the two methods studied and that outperforms each of them individually.

Resumo Limpo

geometr aneurysm quantif consid import topic studi aneurysm format growth risk ruptur also treatment plan usual quantif involv aneurysm isol consist oper detect boundari aneurysm dome feed arteri oper sometim perform manual tedious task subject user variabl obtain reproduc measur automat techniqu propos paper compar differ aneurysm isol techniqu two automat one manualbas cut plane compar result obtain manual delin real case show result automat method good perform provid result similar manual method averag also show automat method improv reproduc compar direct measur perform volum render view automat method present strength weak particular case small aneurysm aneurysm multipl parent vessel termin aneurysm reproduc make suitabl robust popul studi final base studi propos criterion allow use combin two method studi outperform individu

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