Criteria for Wavelet Selection in MR Image Filtering

0352240 - ÚPT 2011 RIV US eng C - Conference Paper (international conference)
Gescheidtová, E. - Bartušek, Karel
Criteria for Wavelet Selection in MR Image Filtering.
PIERS 2010 Xi'an Proceedings. Cambridge: The Electromagnetics Academy, 2010, s. 1569-1572. ISBN 978-1-934142-12-7.
[PIERS 2010 Xi'an. Xi'an (CN), 22.03.2010-26.03.2010]
R&D Projects: GA ČR(CZ) GA102/07/0389; GA ČR(CZ) GA102/07/1086
Institutional research plan: CEZ:AV0Z20650511
Keywords : MR image * wavelet
Subject RIV: JA - Electronics ; Optoelectronics, Electrical Engineering

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 su±cient 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 e±cient 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 eficient.
Permanent Link: http://hdl.handle.net/11104/0191795