. "P(GA102/07/0389), P(GA102/07/1086), Z(MSM0021630513)" . "Bartu\u0161ek, Karel" . "riteria for wavelet selection in MR image processing"@en . . "RIV/00216305:26220/09:PU83835" . "2"^^ . . "RIV/00216305:26220/09:PU83835!RIV10-MSM-26220___" . "1213-1539" . "Gescheidtov\u00E1, Eva" . . . "riteria for wavelet selection in MR image processing"@en . "Magnetic resonance is made use of in particular as a diagnostic imaging method. To be able to reliably establish a diagnosis, the doctors must have at their disposal images of selected parts of human organs that are of sufficient quality, with no details missing. The detected images are frequently of very low contrast and resolution. Similar to MR signals, the images are degraded by noise, the level of which depends, among other things, on the level of the signal being detected, local proton density, voxel size, bandwidth, system design, quality of the RF coil, and the detection parameters. The introduction of wavelet transform provided an efficient tool for processing not only MR signals but also MR images. For a successful processing of images it is important to select from the many currently used types of wavelet. An inappropriate choice of the wavelet can lead to the loss of important information contained in the image or, on the contrary, filtering can be less efficient. In the paper the selectio"@en . "322728" . . "Krit\u00E9ria pro v\u00FDb\u011Br vlnek p\u0159i zpracov\u00E1n\u00ED obraz\u016F"@cs . "CZ - \u010Cesk\u00E1 republika" . . "2009" . . . "5"^^ . "60" . . . "Obrazy sn\u00EDman\u00E9 p\u0159i MR maj\u00ED \u010Dasto velmi n\u00EDzk\u00FD kontrast a jsou zat\u00ED\u017Eeny \u0161umem. Pro posouzen\u00ED kvality filtrace a porovn\u00E1v\u00E1n\u00ED kvality obraz\u016F sn\u00EDman\u00FDch na r\u016Fzn\u00FDch p\u0159\u00EDstroj\u00EDch je nutn\u00E9 pou\u017E\u00EDt n\u011Bkolik krit\u00E9ri\u00ED. Za vhodn\u00E1 pova\u017Eujeme SNR, strmost jasov\u00FDch zm\u011Bn v obraze a kontrast v obraze."@cs . "MRI, SNR, wavelet, contrast"@en . "Krit\u00E9ria pro v\u00FDb\u011Br vlnek p\u0159i zpracov\u00E1n\u00ED obraz\u016F" . . "Obrazy sn\u00EDman\u00E9 p\u0159i MR maj\u00ED \u010Dasto velmi n\u00EDzk\u00FD kontrast a jsou zat\u00ED\u017Eeny \u0161umem. Pro posouzen\u00ED kvality filtrace a porovn\u00E1v\u00E1n\u00ED kvality obraz\u016F sn\u00EDman\u00FDch na r\u016Fzn\u00FDch p\u0159\u00EDstroj\u00EDch je nutn\u00E9 pou\u017E\u00EDt n\u011Bkolik krit\u00E9ri\u00ED. Za vhodn\u00E1 pova\u017Eujeme SNR, strmost jasov\u00FDch zm\u011Bn v obraze a kontrast v obraze." . . . . . . "Elektrorevue - Internetov\u00FD \u010Dasopis (http://www.elektrorevue.cz)" . . "[D71EA9DE6A63]" . . "Krit\u00E9ria pro v\u00FDb\u011Br vlnek p\u0159i zpracov\u00E1n\u00ED obraz\u016F" . "3"^^ . "26220" . "Krit\u00E9ria pro v\u00FDb\u011Br vlnek p\u0159i zpracov\u00E1n\u00ED obraz\u016F"@cs . "Liberda, Ond\u0159ej" . .