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Optimization of Wavelet-Based De-noising in MRI
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SYSNO ASEP 0366897 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Optimization of Wavelet-Based De-noising in MRI Author(s) Bartušek, Karel (UPT-D) RID, ORCID, SAI
Přinosil, J. (CZ)
Smékal, Z. (CZ)Number of authors 3 Source Title Radioengineering. - : VUT - ISSN 1210-2512
Roč. 20, č. 1 (2011), s. 85-93Number of pages 9 s. Language eng - English Country CZ - Czech Republic Keywords wavelet transformation ; filtering technique ; magnetic resonance imaging Subject RIV JA - Electronics ; Optoelectronics, Electrical Engineering R&D Projects GA102/09/0314 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z20650511 - UPT-D (2005-2011) UT WOS 000289657300013 Annotation 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. Workplace Institute of Scientific Instruments Contact Martina Šillerová, sillerova@ISIBrno.Cz, Tel.: 541 514 178 Year of Publishing 2012
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