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Psoriasis is an inflammatory skin disease that spreads worldwide and damages the skin or other body tissues. However, normal visual clinical examination is not always sufficient to determine the feature of the lesions. In this research, we focus on a background removal method that support to enhance the ratio contrast of scalingagainst erythema to skin background in polarized psoriasis images. Those...
ECG (Electrocardiogram) data compression is one of the important requirements of the remote system of monitoring and diagnosis of cardiovascular diseases based on ECG signal. Recently, our team has proposed a two-state ECG compressing algorithm which not only has a high compression ratio and a low distortion, but also is quite simple and flexible for a real-time system. In this algorithm, the selection...
This paper introduces a design for open DSP-based system, which is applied to the bioelectric signal acquisition in real time by using the available audio port in DSP system. In order to evaluate system, sine wave signals ranged from 0 to 100Hz, corresponding to the ECG spectrum bandwidth, are used for experiment. Since the audio port only acquires the signal from 20Hz to 20 kHz, the proposed method...
Internet gaming disorder (IGD) was regarded as behavioral addiction, and the common characteristics of internet addiction (IA) or IGD were craving, tolerance, withdrawal, mood modification, and salience. The fifth version of Diagnostic and Statistical Manual of Mental Disorders, addressed IGD, and also proposed 9 research criteria for IGD in 2013. Emotion was reported one character of IGD, and this...
This paper describes the Vikoworkstation (VW), an image processing software that has been developed by Vikomed and its partners and is available open source as freeware. This package has been implemented by ImageJ suite platform and java swing/awt for interface user. Additionally, communicated functions to peripheral devices that attach importance to develop by embedding communication protocol to...
Electrical Impedance Tomography can detect changes within human body like tumours, ventilation or cardiac abnormalities using electrodes on the surface. However, EIT images are poor when the changes occur far from the electrodes, in the deep, innermost tissue. A possible method to improve measurements is to position one or more internal electrodes near the expected location of the impedance change...
The objective of this research was to design and construction of the system for control robot arm using LEAP Motion Controller. This research has adapted the principle of LEAP Motion Controller and servo motor control. The designed and constructed the project was composed of 3 main parts: 1) detector part, 2) signal control and processing part using microcontroller ATMEL 328 on board (Arduino UNO...
This paper presents how the response frequencies of dental implant structure depend on material properties of both interfacial tissue and dental structure during the osseointegration. Firstly, artificial bone block models were used to mimic various dental implant structures (with different vertical heights of alveolar bone and cortical thickness) in clinic. The structural resonance frequencies (RFs)...
Nowadays, communication between the computer and human is based on different methods such as using signals: gesture, voice, bio-signals. One of the special methods that always interesting in scientists is Brain Computer Communication Interface (BCI). In this study, we focused on communication capabilities of computers and humans through Electroencephalograph signal (EEG). Equipment used in the study...
While other studies into sensing the thickness of subcutaneous fat have configured the axes of both the source and detector to be at a 90-degree angle to the surface being measured, we introduce a source-detector set up at 45-degree angle. We apply Gamos computer simulation and ex-vivo phantom experiment to compare the near infrared response between 90-degree and 45-degree position angles at 930 nm...
Electronic Apex Locator (EAL) has been developed to determine the true apical foramen location and working length of root canals in endodontic treatment process. It has been long stories of EAL devices since the principle idea was first reported. Since then, many modified ideas and varieties commercial products of electronic apex locators have been studied and introduced in to markets. However, the...
In recent years, atmospheric micro-plasma has various applications in the biomedical field, including blood coagulation [1], tissue sterilization [2], wound care [3], etc. However, the effect of atmospheric micro-plasma, mainly through particle excited state, and some of the gas molecules to wound healing is still controversy, therefore diagnosis plasma parameters is necessary. In this work, non-thermal...
This study is to develop an automatic classification system for lower limb Brunnstrom stage of hemiparetic patients. The measurement system is employed both IMU and sEMG to acquire the lower limb motion signals from patients. Afterward, this study extracted some useful features for the proposed rule-based classification system and compared different classification algorithms such as k-nearest neighbor,...
GATE (Geant4 Application for Tomographic Emission) is an open-source Monte-Carlo simulation platform based on Geant4 (GEometry And Tracking) simulation toolkit, widely used for many medical physics applications. Since the Geant4-DNA physical models have been integrated into the version GATE v7.0, the applications of GATE are extended to the field of radiobiology. The latest version GATE v7.2 is based...
This work develops a systematic state-space approach to linearize the nonlinear bilateral teleoperation system. A feedback control law is proposed using the optimazation control method based on the variation method to stabilize the system. The simulation results using Simulink in Matlab are presented to validate the capability of the control system.
With the rapid increase in the number of deaths worldwide due to blood related diseases such as malaria, sickle cell anemia and other types of anemias, the importance of more insightful studies on healthy red blood cell (RBC) membrane cannot be overemphasized since the development and progression of these infectious diseases are closely related to the state of the membrane. Furthermore, due to the...
Dental caries and dental disease are one of the prevalent chronic diseases of people around the world in general and in Vietnam in particular. The detection of carious lesions has been primarily a visual process, based principally on clinical-tactile inspection, and radiographic examination. However, a major shortcoming of clinical-tactile inspection is very limited for detecting dental caries in...
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