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Electrocardiogram (ECG) has been actively proposed as aliveness biometric. In this paper, the study which concern to a realistic application is proposed. Firstly, a single lead normal ECG signal is acquired from individuals of 10 subjects. Then, each single beat ECG is segmented and analyzed in Continuous Wavelet Transform (CWT) domain. Total energy of wavelet coefficients for each P, QRS, and T segment...
This paper proposes a robust method to detect involuntary blinks for visual display terminal (VDT) users using Web camera, even if the Web-camera's frame rate dynamically changes and becomes slow. Conventional methods which are widely used for drivers and paralyzed person with higher-performance camera, calculates correlation between an open eye template and cureent eye image at each frame, and judge...
Normally, there have been many methods to diagnosis of flat foot. Each method is different to use indicators e.g. Staheli arch index, Clark's angle and Chippaux-Smirak index. However, the results from such indicators are still varied in each method. Therefore, this paper proposes a classification of the flat foot by combining of multiple indicators with neural network process. It can improve an accuracy...
Complexity of autonomic regulation affects the systemic vascular, but little is known about its influence on cerebrovascular regulation. In this study, we examine the complexity of neuromodulation by frequency and nonlinear heart rate variability (HRV) to cerebral reserve function during cerebrovascular reactivity (CVR) by breath holding induced - hypercapnia and subsequently, cerebral vasodilatation...
During left ventricular support by rotary blood pumps (RBPs), pump speed plays an important role in the amount of heart support. The reducing of pump speed seems important in order to prevent some adverse events in the heart valve. However, when pump speed was reduced, the backflow which is the flow that has the reverse direction to blood pumping direction may occur more easily. This is due to the...
Nowadays, microscopic is used in several laboratories for detect cells or parasite by technician. Especially testing in urine sediment is important for the patients who are abnormal about urinary tract. Constantly, the appearance of red blood cells, white blood cells, crystals, bacteria and other microorganisms in urine sediment's patients is more important information for diagnosis. This paper proposes...
Using nanorobots for medical diagnostics and treatment has been an intriguing idea since the concept of nanotechnology was introduced. This study investigated the control mechanism for locomotion of nanorobots in blood vessel repair application. Each nanorobot operating as artificial platelets has only essential characteristics for self-assembling into a mass at the injured blood vessel wall to reduce...
The parasympathetic nervous function in obstructive sleep apnea syndrome (OSAS) patients were quantified by using the respiratory sinus arrhythmia (RSA) impulse response magnitude. Ten participants were recruited and classified into three groups; mild (four participants), moderate (four participants) and severe (two participants) groups. Autoregressive with exogenous input (ARX) model was used to...
The intra-aortic balloon pump (IABP) is a mechanical device to be useful in assisting the heart failure patients. The computer simulation of the cardiovascular system with intra-aortic balloon pump has been not only used for research but also improved and deployed for teaching therapeutic technique and diagnostic procedures. This study is showed the mathematical model of cardiovascular with assisting...
Computational fluid dynamic (CFD) model is used to evaluate cardiovascular hemodynamics and the model is useful to predict the blood flow pattern and the wall shear stress (WSS) in various conditions. This study used the CFD model to assessment the influence of varied blood conditions and geometries on changing of velocity ratio at the internal carotid artery (ICA) and the external carotid artery...
We have designed and investigated the system of upper limbs rehabilitation. The measurement parameters in the system are Electromyography (EMG), the angle of arm, and weight. These parameters are useful as an indication of rehabilitation performance in terms of both quantity and quality. The performance of the proposed system is evaluated with CPM training on triceps and infraspinatus muscles, which...
We have developed a straightforward optics system for lab on chip applications. This system can be used to handle a continuous micro fluid flow, submicron and nano-sized particles. The device that is investigated under this system can be used to fields such as bioseparation, biosensors for diagnostic and prognostic purposes. In our advance, the system is formed for dielectrophoretic (DEP) colloidal...
Therapeutic hypothermia is recommended as a cardiac arrest treatment for neuroprotection. In this study, we aimed to explore nonlinear heart rate variability (HRV) with other domains to clearify and setting up the significant index for survival. All patients were divided into two groups by 7 days survival outcome (n = 9 vs. 9). The limb lead II ECG signals are collected (10 minutes, sampling rate:...
The objective of this research was to design and construct of the low - cost defibrillator analyzer. This research has adopted the principle of voltage divider and standard calibration curves of the relationship between the set of standard output energy, the standard maximum voltage and the standard maximum current versus the digital output of them. The designed and constructed the low - cost defibrillator...
The detection of thyroid stimulating hormone (TSH) is critical for disease early intervention and the prevention of pandemics. However the low detection sensitivity and the high cost limit further application of TSH biosensor. In order to improve the sensitivity and reduce the cost, interdigitated microelectrodes (IDμE) biosensor was prepared for the sensitive and low cost detection of TSH. The IDμE...
This paper presents two methods for reducing complexity of dynamic receive beamforming in order to be implemented on a single field-programmable gate array (FPGA) with 500K gates. These methods apply windows to divide each scanline into segments and each segment has its own focus at the center. One method uses constant window size and the other applies dynamic window size that equalizes the off-focus...
Stroke patient rehabilitation by treadmill tends to increase in recent years. The rehabilitation on treadmill needs more than two staffs per patient to control the process and protect them from falling. As a result, it takes too much time and resource to operate. To resolve this problem, this paper proposes to develop an automatic sensor that is simple and easy to use by using ultrasonic sensor and...
Endoscopy is a medical device used for examining organs or treating affected areas in side of body. However, there is the possibility a chance of infection by viruses and bacteria due to the direct contact with the mucous membrane and blood, so it is required high-intensive disinfection in order to prevent secondary infection. The conventional cleansers are inefficient and complicated to use because...
Virtual reality technology is common used to entertain people as movies or games. At present, this technology applies to medical field for training surgeon on operating simulation or patients with either neurological disease or psychiatric disorder. The study focused on the algorithm of pattern classification. The artificial neural network was considered to achieve this classification. The multilayer...
This paper presents gait identification method based on Finite Impulse Response (FIR) system characterizing motion of leg. First, the four gait features, area of footstep, angle of footstep, height and width of the human silhouette image, are calculated from the human silhouette image. Then they are expanded into Fourier series to reduce the fluctuation of human body motion. The motion of leg can...
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