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Nonenhanced computerized tomography (CT) exams were used to detect acute stroke by notification of hypodense area. Infarction perception improvement by data denoising and local contrast enhancement in multi-scale domain was proposed. The wavelet-based image processing method enhanced the subtlest signs of hypodensity, which were often invisible in standard(More)
BACKGROUND Stroke is a syndrome characterized by a sudden neurological deficit caused by cerebral ischemia. Computed tomography (CT) plays a crucial role in the evaluation of stroke patients even though it is not sufficient enough to extract the hypodense area corresponding to the infracted cerebral tissues in hyperacute stage. Careful selection of patients(More)
This paper presents a computer assisted support of ischemic stroke diagnosis based on nonenhanced CT examinations acquired in the hyperacute phase of stroke. Computational analysis, recognition, and image understanding methods were used for extraction of the subtlest signs of hypodensity in diagnostically important areas. Starting from perception(More)
Extracranial artery dissection is a rare finding. It may be the result of acute aortic dissection. We present the case of a 50-year-old patient admitted to Department of Neurology CSK MSWiA with signs of transient ischaemic attack. Both computed tomography (CT) and magnetic resonance imaging revealed no ischaemic changes within the central nervous system.(More)
BACKGROUND Brooke-Spiegler syndrome is a rare condition with a predisposition to develop cutaneous adnexal neoplasms, especially cylindromas, trichoepitheliomas and spiradenomas. Malignant transformation of cylindromas is rare. In such cases usually cylindrocarcinomas develop within these lesions. We present an unusual case of basal cell carcinoma(More)
In this paper we propose a method, which supports determination of clinical significance of prostate lesions. The goal was to differentiate clinical significance of abnormalities according to the indicated lesion location. The clinical context of the reported research is based on multiparemetric Magnetic Resonanse Imaging (mpMRI) obtained from the PROSTATEx(More)
The Planar CT exams were used to detect acute ischemic stroke by hypodense symptoms notification. Infarction perception improvement by adaptive window settings, data denoising and local contrast enhancement in image and multi-scale domain is proposed. The post-processing methods enhance the subtlest, often invisible signs of hypodensity. Thus improved(More)