搜索结果: 1-15 共查到“生物医学工程 estimation”相关记录22条 . 查询时间(0.22 秒)
Estimation of Optimal PDE-Based Denoising in the SNR Sense
Image denoising nonlinear diffusion signal-tonoise ratio (SNR) total-variation variational image processing
2010/1/7
This paper is concerned with finding the best partial differential equation-based denoising process, out of a set of possible ones. We focus on either finding the proper weight of the fidelity term in...
Optimal nonlinear line-of-flight estimation in PET
Artificial neural network emission tomography gamma camera scintillation detector
2010/1/7
The authors consider detection of high-energy photons in positron emission tomography using thick scintillation crystals.Parallax effect and multiple Compton interactions in such
crystals significant...
Optimal nonlinear line-of-flight estimation in PET
Artificial neural network emission tomography gamma camera scintillation detector
2010/1/7
The authors consider detection of high-energy photons in positron emission tomography using thick scintillation crystals.Parallax effect and multiple Compton interactions in such
crystals significant...
Improving motion estimation by accounting for local image distortion
Cardiac elastography Motion estimation Image transformation
2010/1/6
Cardiac elastography is a useful diagnostic technique for detection of heart function abnormalities, based on analysis ofechocardiograms. The analysis of the regional heart motion allows assessing the...
The combined effect of nonlinear filtration and window size on the accuracy of tissue displacement estimation using detected echo signals
Cardiac elastography Motion estimation Nonlinear image filtration
2010/1/6
In cardiac elastography, the regional strain and strain rate imaging is based on displacement estimation of tissue sections withinthe heart muscle carried out with various block-matching techniques (c...
Robust Estimation of Ultrasound Pulses Using Outlier-Resistant De-Noising
Outlier-resistant estimation ultrasound pulse estimation
2010/1/6
A different approach to the problem of estimation of
the ultrasound pulse spectrum, which usually arises as a part of
ultrasound image restoration algorithms, is presented. It is shown
that this es...
Shift-Invariant , DWT-Based “Project ion” Method for Estimation of Ultrasound Pulse Power Spectrum
Shift-Invariant DWT-Based Ultrasound
2010/1/6
An approach to computing estimates of the
ultrasound pulse spectrum from echo-ultrasound RF sequences,
measured from biological tissues, is proposed. It
is computed by a “projection” algorithm base...
Chaotic signal detection and estimation based on attractor sets: Applications to secure communications
Chaotic signal detection and estimation attractor sets secure communications
2009/12/23
Chaotic signal detection and estimation based on attractor sets: Applications to secure communications.
An Efficient Estimation Method for Reducing the Axial Intensity Drop in Circular Cone-Beam CT
Estimation Method Circular Cone-Beam CT
2009/9/4
Reconstruction algorithms for circular cone-beam (CB) scans have been extensively studied in the literature. Since insufficient data are measured, an exact reconstruction is impossible for such a geom...
Material Properties Estimation of Living Soft Tissue Based on MR Images and Iterative FE Analysis
soft tissue material property MRI FEM
2009/6/9
This paper presents a method of material properties estimation for highly accurate finite element analysis of living soft tissue. It employs a compression test inside MRI in order to visualize the def...
Estimation of Extracellular Volume by Simultaneous Instrumentation of Bioimpedance and Plasma Colloid Osmotic Pressure
bioimpedance colloid osmotic pressure dialysis patient dry weight, extracellular volume
2009/6/9
Extracellular fluid volume can be roughly estimated using the approximate electric resistivity calculated using only the set fluid removal quantity and the measured impedance of each body part in ECUM...
Estimation of Respiration Variability by Heart Rate Time Series
Respiratory sinus arrhythmia (RSA) heart rate variability wavelet transform
2009/6/9
The heart rate time series contains two main rhythms : RSA (respiratory sinus arrhythmia), which is synchronous with the respiration rate, and the Mayer wave, which is generally centered around 0.1 Hz...
Development of Human Sensory Estimation Method and Massage Control Method Based on Vital Signals of Autonomic Nervous System When Using a Massage Chair
peripheral skin temperature pulse galvanic skin response quality of comfortableness massage chair
2009/6/9
This paper describes the development of a sensor incorporating an algorithm that estimates the quality of comfortableness by measuring peripheral skin temperature, pulse, and galvanic skin response (G...
Sleep Indices and Sleep Stage Estimation Method by Unconstrained Bio-signal Measurement
unconstrained bio-measurement heartbeat sleep stage REM stage Non-REM stage
2009/6/8
Sleeping has a significant role in refreshing the brain and body from fatigue. Due to the aging, however, obtaining the sleep of high quality gradually becomes difficult. In Japan, which now faces the...
Model Based Estimation Method of Synaptic Weight Using Cross Correlation Analysis
Multi-unit recordings Cross-Correlation Analysis Synaptic Plasticity
2009/6/2
In the brain, cooperative activity of many neurons is believed to play essential role in neuronal information processing. To evaluate correlation of neuronal activity, cross-correlation histogram (CCH...