conclusions in the case of existence gaussian noise, the results confirm that denoising is not effective on the measurement of t2* value. in the case of image distortion by rician noise, a predictor model is proposed to estimate the original t2* value. the predictor model is used to estimate the t2* value of new patients. the predicted t2* values were in good agreement with the corresponding or...

Semi active control systems are becoming increasingly popular because they offer reliability of passive systems combined with high performance and versatility of active control systems but with low power consumptions. As Magnetorheological (MR) fluids can produce good controllable damping force under application of magnetic field, MR damper can be used as effective element in semiactive vibrati...

Due to the complex nonlinearity of magnetorheological (MR) behavior, the modeling of MR dampers is a challenge. A simple and effective model of MR damper remains a work in progress. A novel model of MR damper is proposed with force-velocity hysteresis division method in this study. A typical hysteresis loop of MR damper can be simply divided into two novel curves with the division idea. One is ...

Medical image translation has the potential to reduce imaging workload, by removing need capture some sequences, and annotation burden for developing machine learning methods. GANs have been used successfully translate images from one domain another, such as MR CT. At present, paired data (registered CT images) or extra supervision (e.g. segmentation masks) is needed learn good models. Register...

OBJECTIVE The purpose of this study was to compare the cost-effectiveness of MR lymphangiography-based strategies with that of sentinel lymph node (SLN) biopsy alone in the axillary staging of early breast cancer. MATERIALS AND METHODS A decision-analytic Markov Model was developed to estimate quality-adjusted life expectancy and lifetime costs among 61-year-old women with clinically node-neg...

BACKGROUND AND OBJECTIVES The aims of this study were to establish a reliable model of chronic mitral regurgitation (MR) in rats and verify the pathophysiological features of this model by evaluating cardiac function using serial echocardiography and a pressure-volume analysis. MATERIALS AND METHODS MR was created in 37 Sprague-Dawley rats by making a hole with a 23 gauge needle on the mitral...

Particle swarm optimization (PSO) technique has achieved a considerable success in solving nonlinear, nondifferentiable, multi-modal optimization problems. Currently, PSO is broadly applied in several scientific and engineering optimization applications. This paper introduces an identification of magnetorheological (MR) damper’s parameters using the PSO algorithm to introduce a more simple and ...

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