Autor: Piórkowski, A. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Construction of educational color layer for echocardiography simulator
Autorzy:: Piórkowski, A.
Powiązania:: https://bibliotekanauki.pl/articles/333069.pdf
Data publikacji:: 2010
Wydawca:: Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:: tomografia komputerowa
echokardiografia przezprzełykowa
symulator
transesophageal echocardiography
computed tomography
simulator
Opis:: There is the educational color layer for CT2TEE, an online transesophageal echocardiography (TEE) simulator accessible at www.ct2tee.agh.edu.pl in the current paper presented. TEE is nowadays one of the most important diagnostic tools in cardiology. Because of the semi-invasive nature of this examination and complexity of heart structure the training process of learning TEE can be long and difficult, especially in patients with congenital heart disease. Therefore CT2TEE is constructed, the first online TEE simulator, described in detail in the previous publication. This paper contains an overview on echocardiographic simulators and the previously constructed CT2TEE simulator. A detailed description of the construction and operating principles of the Educational Color Layer (ECL), an additional feature of the CT2TEE simulator, is provided. ECL, being a color information storing and indexing platform, enables to mark various 3D heart structures and facilitates the process of learning TEE.
Źródło:: Journal of Medical Informatics & Technologies; 2010, 16; 167-171
1642-6037
Pojawia się w:: Journal of Medical Informatics & Technologies
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Selected issues of corneal endothelial image segmentation
Autorzy:: Piórkowski, A.
Gronkowska-Serafin, J.
Powiązania:: https://bibliotekanauki.pl/articles/333407.pdf
Data publikacji:: 2011
Wydawca:: Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:: śródbłonek rogówki
segmentacja komórki
binaryzacja
corneal endothelial
cell segmentation
binarization
Opis:: This article concerns the analysis of corneal endothelial image. The basic problems of binarization and segmentation of these images are discussed. Preprocessing methods are proposed, consisting of median and convolution filtration, to remove noise. An algorithm of normalization of the average brightness of the vertical and horizontal is presented. The problem of binarization is discussed. At the end the proposal of segmentation algorithm is reported.
Źródło:: Journal of Medical Informatics & Technologies; 2011, 17; 239-245
1642-6037
Pojawia się w:: Journal of Medical Informatics & Technologies
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Constructing software for analysis of neuron, glial and endothelial cell numbers and density in histological Nissl-stained rodent brain tissue
Autorzy:: Kołodziejczyk, A.
Ładniak, M.
Piórkowski, A.
Powiązania:: https://bibliotekanauki.pl/articles/333525.pdf
Data publikacji:: 2014
Wydawca:: Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:: cell segmentation
cell-counting
image processing
image analysis
segmentacja komórki
zliczanie komórek
przetwarzanie obrazu
analiza obrazu
Opis:: Cell number, density and volume of white and gray matter in brain structures are not constant values. Cellular alterations in brain areas might coincide with neurological and psychiatric pathologies as well as with changes in brain functionality during selection experiments, pharmacological treatment or aging. Several softwares were created to facilitate quantitative analysis of brain tissues, however results obtained from these softwares require multiple manual settings making the computing process complex and time-consuming. This study attempts to establish half automated software for fast, ergonomic and an accurate analysis of cellular density, cell number and cellular surface in morphologically different brain areas: cerebral cortex, pond and cerebellum. Images of brain sections of bank voles stained with standard cresyl-violet technique (Nissl staining), were analyzed in designed software. Results were compared with other commercially available tools regarding number of steps to be done by user and number of parameters possible to measure.
Źródło:: Journal of Medical Informatics & Technologies; 2014, 23; 77-85
1642-6037
Pojawia się w:: Journal of Medical Informatics & Technologies
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Pattern matching algorithms in preparation of a 3D heart models
Autorzy:: Bernady, G.
Gackowski, A.
Kempny, A.
Piórkowski, A.
Powiązania:: https://bibliotekanauki.pl/articles/333318.pdf
Data publikacji:: 2011
Wydawca:: Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:: dopasowywanie wzorca
symulator
echokardiograficzne badanie przezprzełykowe
tomografia komputerowa
pattern matching
simulator transoesophageal echocardiography
computed tomography
Opis:: The CT2TEE is an online transoesophageal echocardiography (TEE) simulator [2] developed on the AGH University of Science and Technology. As a basis for the displayed real-time simulation it uses 3D models created by hand from the CT images. The aim of this paper is to present algorithms developed specifically for efficient editing and preparation of three-dimensional models of the heart for use in the CT2TEE simulator. A detailed description of proposed algorithms, their advantages and limitations, is provided.
Źródło:: Journal of Medical Informatics & Technologies; 2011, 17; 313-319
1642-6037
Pojawia się w:: Journal of Medical Informatics & Technologies
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Using computed tomography images for a heart modeling
Autorzy:: Szostek, K.
Piórkowski, A.
Kempny, A.
Banyś, R.
Gackowski, A.
Powiązania:: https://bibliotekanauki.pl/articles/333424.pdf
Data publikacji:: 2012
Wydawca:: Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:: echokardiografia
przetwarzanie obrazów
symulacja medyczna
echocardiography
image processing
medical simulation
Opis:: In this paper the quality and analysis of the computed tomography scan sets are presented in the context of creating a 3DD model of a heart for the ultrasonography simulator. Data was collected during regular patients examination, using various equipment and technique, therefore not every set has required quality. CT data can be fast characterized with histogram that can show if the brightness ranges of objects (heart structures) are selective. This makes CT data usable for simulation by applying a transform function on the CT images to produce ultrasonographylike images. The aim is to use a PACS system of Hospital, which is the source of data. Therefore a proper technique and system for analysis is needed.
Źródło:: Journal of Medical Informatics & Technologies; 2012, 19; 75-84
1642-6037
Pojawia się w:: Journal of Medical Informatics & Technologies
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Selected aspects of corneal endothelial segmentation quality
Autorzy:: Piorkowski, A.
Nurzynska, K.
Boldak, C.
Reska, D.
Gronkowska-Serafin, J.
Powiązania:: https://bibliotekanauki.pl/articles/333738.pdf
Data publikacji:: 2015
Wydawca:: Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:: corneal endothelial
cell segmentation
binarization
śródbłonek rogówki
segmentacja komórki
binaryzacja
Opis:: The number and shape of cells in endothelium layer is highly correlated with the quality of vision. Therefore, its precise and automatic description plays an important role in medicine. This work presents several aspects of image processing of endothelium layer acquired by specular microscope. The comparison of cell selection accuracy is discussed using two different approaches to solve this problem: convolution filtering methods, and snake-based method. Moreover, for verification results generated by dedicated software, supplied with the microscope, were utilized. Next, the precise segmentation method is applied to improve the segmentation. The results are inspected visually, but also CV, H, and CVSL parameters, used in medicine, are calculated. The research concludes that general visual outcomes achieved by all segmentation approaches give similar results, however deep insight into cell outline position reveals some differences, which were partially removed after precise segmentation application. The analysis of parameter values show high stability of CV and CVSL parameters.
Źródło:: Journal of Medical Informatics & Technologies; 2015, 24; 155-163
1642-6037
Pojawia się w:: Journal of Medical Informatics & Technologies
Dostawca treści:: Biblioteka Nauki

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