Broadband Motion Detection with Wavelet MRE: Validation Study in Phantom and in vivo

Motivation: To test wavelet magnetic resonance elastography (MRE), a promising new technique, on its efficiency in detecting broadband tissue motion. Goal(s): Evaluate the efficiency and reproducibility of broadband motion detection using wavelet MRE. Approach: Transient motion in phantoms was reconstructed using both the inverse wavelet transform and standard deconvolution using MRE with various MEG lengths. The estimated displacements were compared. The reproducibility of brain transient motion measurements was assessed in vivo. Results: Wavelet MRE demonstrated high efficiency and reproducibility for broadband motion detection. These findings suggest that wavelet MRE is a promising technique in brain trauma study. Impact: Wavelet magnetic resonance elastography is developed to detect broadband motion more accurately and efficiently and could be particularly useful in detecting transient motion during brain impact. This study aims to validate its efficacy and assess its repeatability.