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algorithms or region growing are well-known, but they are In this paper we address the problem of ultrasound volume data segtnentation by means of active contours. The segmentation is performed on an slic~by-slice basis but exploiting the high correlation that exists across nearby slices. We have used active rays to alleviake the computational load of the(More)
In this paper we propose a new error criterion for volume data compression. Our method allows us to determine the compression ratio to guarantee a level of quality for every isosurface of interest. We compare our method to other previously reported. 1 Introduction 3D medical data have one major problems in their huge size, which make them difficult to store(More)
A 61-year-old female developed a rapidly progressive pan-cerebellar syndrome. During the initial assessment, which included a brain magnetic resonance scan and examination of the cerebrospinal fl uid (CSF), the studies were negative. The study using immunofl uorescence of the patient's serum and the patient's CSF with sections of rat cerebellum showed(More)
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