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ISBI
2006
IEEE

Complex wavelets for registration of tagged MRI sequences

12 years 6 months ago
Complex wavelets for registration of tagged MRI sequences
Tagged Magnetic Resonance Imaging (MRI) is currently the reference MR modality for myocardial motion and strain analysis. Mutual Information (MI) based non rigid registration has proven to be an accurate method to retrieve cardiac deformation fields. However, this technique ignores high frequency information in tags. In a previous work this information was included by using feature vectors formed with wavelet coefficients and kNN graphs to estimate MI. It was shown that cardiac motion estimation was feasible with these features. In this work, features were derived from Complex Wavelet Transform (CWT), which is shift invariant and provides more high frequency subimages than conventional wavelets. Results show that lower errors are obtained with respect to the use of pixel intensity.
Estanislao Oubel, Alejandro F. Frangi, Alfred O. H
Added 20 Nov 2009
Updated 20 Nov 2009
Type Conference
Year 2006
Where ISBI
Authors Estanislao Oubel, Alejandro F. Frangi, Alfred O. Hero
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