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Improving DESS contrast in 7T hip images using L1-norm denoising and optimal echo combination
{The double-echo steady-state (DESS) sequence has been used successfully in 3T MRI imaging of the musculoskeletal system for segmentation of joint. However, in 3D-DESS images acquired at 7T MRI, a reduction in the contrast between tissues due to an increased diffusion sensitivity may complicate cartilage segmentation. Typically, the signals acquired with DESS are averaged without any pre-processing. However, these signals give different contrasts and have different noise behaviours. In this work, we improve the contrast-to-noise ratio (CNR) whilst preserving anatomical detail in high-resolution 7T DESS images through a new approach combining L1-norm denoising and p-norm combination of the echo signals.}
@misc{item_3248102, title = {{Improving DESS contrast in 7T hip images using L1-norm denoising and optimal echo combination}}, booktitle = {{2020 ISMRM \& SMRT Virtual Conference \& Exhibition}}, abstract = {{The double-echo steady-state (DESS) sequence has been used successfully in 3T MRI imaging of the musculoskeletal system for segmentation of joint. However, in 3D-DESS images acquired at 7T MRI, a reduction in the contrast between tissues due to an increased diffusion sensitivity may complicate cartilage segmentation. Typically, the signals acquired with DESS are averaged without any pre-processing. However, these signals give different contrasts and have different noise behaviours. In this work, we improve the contrast-to-noise ratio (CNR) whilst preserving anatomical detail in high-resolution 7T DESS images through a new approach combining L1-norm denoising and p-norm combination of the echo signals.}}, year = {2020}, slug = {item_3248102}, author = {Destruel, A and Li, M and Engstrom, C and Weber, E and Jin, J and Heule, R and Bieri, O and Liu, F and Crozier, F} }