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Electromagnetic tracking, a non-fluoroscopic image navigation method most often used in minimally invasive therapy, has prominent advantages and features over the traditional X-ray radioscopy. Using two rotating coils and one 3-axis magnetic sensor, a novel 6 degree of freedom (DOF) electromagnetic tracking method is proposed in this paper. Two alternate(More)
Exact and fast automatic analyses of electrocardiogram (ECG) signal is critical for the computer based diagnosis of cardiac diseases, which has attracted many researches' attentions in recent years. In the present study, a novel QRS complex detection approach based on differential threshold method was proposed, which was designed as three analysis steps of(More)
To make automatic external defibrillators (AEDs) easy to use by the public who is not familiar with emergency treatment and electrocardiogram (ECG) analysis, it is critical to have an accurate shockable rhythm recognition algorithm. This paper presents a novel compositive algorithm by combining a slope variability analyzer with a band-pass digital filter so(More)
Magnetoacoustic tomography with magnetic induction (MAT-MI) is a recently introduced method for imaging electrical impedance properties of biological tissue, which integrates classic electrical impedance tomography and ultrasonic technique. Image reconstruction is the key problem of MAT-MI. At present, there are certain problems for the image reconstruction(More)
epilepsy is a neurological disease with the feature of repeated seizures. The probability to predict upcoming seizures is an issue that attracts both researchers and clinicians. Meanwhile, the directed transfer function (DTF) analysis as mechanism for feature extraction in the intracranial electroencephalographic (iEEG) recordings applied to epileptic(More)
Erectile dysfunction (ED) is a frequent disorder in aging men, affecting men's physical and mental health seriously. Generally, clinical diagnosis of the physical ED need image of penile vessels to distinguish vasculogenic ED disorders from psychological disorders so as to determine an appropriate treatment. The aim of this study is to present a novel(More)
The purpose of the present study is to numerically analyze and optimize structural parameters effecting on the transmitting performance of piezoelectric micromachined ultrasonic transducers (PMUTs) with a vibration layer. Using the finite elements method (FEM), a planar and two curved (dome-shaped and concave) structures of PMUTs based on aluminum nitride(More)
Compared with clinical and experimental approaches, numerical modeling of defibrillation offers a great opportunity to optimize the defibrillation strategy in a more individualized way. Through numerical simulation of the shock-induce electric field distribution, the outcome of a certain defibrillation shock could be predicted according to several different(More)
Since the inability of clinical approaches to measure the shock-induced electric field distribution of internal cardiac defibrillation, current clinical applications of the implantable cardioverter defibrillator (ICD) still stay largely empirical. In this study, a finite element modeling and simulation method for solving internal cardiac defibrillation(More)
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