Počet záznamů: 1

Optimization of Wavelet-Based De-noising in MRI

  1. 1.
    0366897 - UPT-D 2012 RIV CZ eng J - Článek v odborném periodiku
    Bartušek, Karel - Přinosil, J. - Smékal, Z.
    Optimization of Wavelet-Based De-noising in MRI.
    Radioengineering. Roč. 20, č. 1 (2011), s. 85-93 ISSN 1210-2512
    Grant CEP: GA ČR GA102/09/0314
    Výzkumný záměr: CEZ:AV0Z20650511
    Klíčová slova: wavelet transformation * filtering technique * magnetic resonance imaging
    Kód oboru RIV: JA - Elektronika a optoelektronika, elektrotechnika
    Impakt faktor: 0.739, rok: 2011

    In the paper, a method for MR image enhancement using the wavelet analysis is described. The wavelet analysis is concentrated on the influence of threshold level and mother wavelet choices on the resultant MR image. The influence is expressed by the measurement and mutual comparison of three MT image parameters: signal to noise ratio, image contrast, and linear slope edge approximation. Unlike most standard methods working exclusively with the MR image magnitude, in our case both the MR image magnitude and the MR image phase were used in the enhancement process. Some recommendations are mentioned in conclusion, such as how to use a combination of mother wavelets with threshold levels for various types of MR images.
    Trvalý link: http://hdl.handle.net/11104/0201730