… The regularisation term consists of the L1-norm of the second spatial derivatives of the predicted displacement field u. Given that the strain modulus corresponds to the displacement …
H Rivaz, EM Boctor, MA Choti… - IEEE transactions on …, 2010 - ieeexplore.ieee.org
… images it with ultrasound. Within many techniques proposed for static elastography, we focus on freehand … Increasing the regularization weight is adversely affecting spatial resolution. …
C Pellot-Barakat, F Frouin, MF Insana… - IEEE transactions on …, 2004 - ieeexplore.ieee.org
… Elastograms of normal breast tissue were formed with the ROF algorithm using the same regularization factor and number of spatial scales found optimal for phantom data ( …
… To compensate for the anticipated underestimation, we introduce adaptive spatialregularization terms of the form α(dispi − … As such, the spatialregularization Rs is defined as follows: …
AL Duroy, V Detti, A Coulon, O Basset… - Ultrasonic …, 2023 - journals.sagepub.com
… local regularization is applied to ensure continuity with spatially close estimates characterized by CC ≥ Th . The threshold Th is set at 0.75, value found to be adapted for the analysis of …
… a data-adaptive regularizer for capturing the spatially variant tissue elasticity pattern. The … for ultrasoundelastography on the basis of FEMs by solving a regularized optimization problem…
… In this study, an improved regularized SWS estimator is presented for CWS, correcting the subestimation of lesions from the previous version as well as enhancing the spatial resolution. …
… Here, γ is the spatialregularization weight for the first sample(s). R1 and R2 are the first- … to SOUL with stronger regularization, we increase the regularization parameter values of GLUE …
X Pan, K Liu, J Bai, J Luo - Biomedical engineering online, 2014 - Springer
… ultrasoundelastography, reconstruction of tissue elasticity (eg, Young’s modulus) requires regularization … does not need any regularization or boundary force/displacement information. …