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Browsing by Subject "dynamiczna perfuzja"

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    Item type:Article, Access status: Open Access ,
    Automatyczna detekcja elementów asymetrii w dynamicznych mapach CBF perfuzji mózgowej
    (Wydawnictwa AGH, 2008) Hachaj, Roman
    This paper presents a new algorithm that enables detection of asymmetry in dynamic CBF perfusion maps. In the first stage of the algorithm detection of symmetry axis of image (between left and right hemisphere) is performed. In the second stage the level of asymmetry in cerebral blood flow is measured by detection of regions with different perfusion in both brain hemispheres. The algorithm was tested on a set of 28 different images showing or not cerebral blood flow anomalies. The paper also describes the method for estimating cerebral blood flow with a non diffusing contrast agent based on the Meier-Zierler convolution model as well as CBF, CBV, MTT and TTP perfusion maps.