Wynik wyszukiwania w bazie Polska Bibliografia Lekarska GBL

Zapytanie: MAŁOTA
Liczba odnalezionych rekordów: 2



Przejście do opcji zmiany formatu | Wyświetlenie wyników w wersji do druku

1/2

Tytuł oryginału: On the acoustic phenomena produced by turbulence in the flowing blood.
Autorzy: Góral-Wójcicka A., Borgieł W., Małota Z., Nawrat Z.
Źródło: Pol. J. Med. Phys. Engin. 2002: 8 (1) s.29-35, il., bibliogr. 12 poz.
Sygnatura GBL: 306,499

Hasła klasyfikacyjne GBL:
  • kardiologia

    Typ dokumentu:
  • praca przeglądowa
  • tytuł obcojęzyczny

    Wskaźnik treści:
  • ludzie

    Streszczenie angielskie: A turbulent flow can be a source of sounds called "murmur" or "souffle", and can be a result of pathology in the blood vascular system. A model of acoustical effects, related to stenosis of the aorta, was created. Numerical calculations of pressure fluctuations in the environment of a simulated turbulent region were performed.


    2/2

    Tytuł oryginału: Computer simulations of coronary By-pass procedures based on an electric analogue model of the left coronary artery.
    Autorzy: Kostka Paweł, Nawrat Zbigniew, Małota Zbigniew
    Źródło: Pol. J. Med. Phys. Engin. 2002: 8 (1) s.23-28, il., bibliogr. 4 poz.
    Sygnatura GBL: 306,499

    Hasła klasyfikacyjne GBL:
  • kardiologia

    Typ dokumentu:
  • praca przeglądowa
  • tytuł obcojęzyczny

    Wskaźnik treści:
  • ludzie

    Streszczenie angielskie: Estimating the flow curve in coronary arteries is of great importance both from point of view of diagnosis, modeling and simulation. The aim of this work is to create a model of the coronary artery tree, simulate the stenosis areas in a particular coronary vessel and study the influence of different stenosis levels and coronary by-pass connections on the flow pattern. The model of the left coronary artery was created, based on an arteriogram developed by Sapoznikow [3] and Wang [4], where the vessel was divided into 14 segments described by geometrical and mechanical parameters. Each unit in the model is represented by an electrical analogue circuit, with R, L, C values obtained from coronary artery parameters based on the relationships resulting from Newtonian and continuity equations. The model-network of adequately connected blocks of transfer functions - corresponding to each left coronary artery segment was implemented in the Matlab-Simulink environment. A local stenosis was simulated by the change in geometrical and mechanical features of a particular segment causing a change in its transfer function. As a result of computer simulations performed on the model, the flow and pressure signals in a chosen aortic segment can be computed.

    stosując format: