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In this study, we collected cases by means of uniform Information- Collection Scale of Inquiry Diagnosis for Cardiovascular Diseases in TCM. The diagnostic criteria were established, and each case was interpreted by associate chief physician or senior doctor. The value “1 or 0” was assigned to “with or without” information. By using Epidate 3.1, the information collected was entered by two persons...
Nanotechnology has been broadly defined as the one for not only the creation of functional materials and devices as well as systems through control of matter at the scale of 1-100 nm, but also the exploitation of novel properties and phenomena at the same scale. Growing needs in the point-of-care (POC) that is an increasing market for improving patient's quality of life, are driving the development...
A simulation approach was proposed to analyze the spectra of Doppler signals from stenoed artery in a steady flow, which can provide a useful guidance for detecting the formation understanding, diagnosis and treatment of many cardiovascular diseases. Firstly, by solving Navier-Stokes equations, the velocity distributions in the vessels with various stenoed degrees are calculated. Secondly, power spectral...
Telecardiology is a newer alternative modality for providing effective cardiac care from a variable distances by utilizing information and information and communication technology. The cardiovascular diseases in rural population of Malaysia including Sabah are a leading cause of death. The scarcity of specialists, leads to delayed treatment, irregular follow up and ineffective monitoring. We aim to...
Heart sound stethoscope is one of the effective ways to assess the cardiovascular diseases. In this paper, an electronic stethoscope, which is based on embedded processors and Bluetooth transmission, is designed to fulfill the shortages from the auscultation. The portable device can play heart sound in real-time with or without earphone after signal collection, signal preprocessing and power amplification...
Electrocardiogram (ECG) is an essential method for the clinical diagnosis of cardiovascular diseases. The weak biomedical signal buried in all kinds of noise will result in the useful information lost or false information on the wavelet decomposition. According to the characteristics of ECG signal and wavelet transform, a discrete wavelet soft threshold denoise processing method is used to remove...
Human heart sound signals has the characteristics of strong noise, slight signal, strong randomness and vulnerability to outside interference. De-noising of heart sound signals, therefore, forms the primary basis for achieving non-invasive diagnosis of coronary heart disease. This paper proposes the wavelet Transform method for de-nosing heart sound signals, which has yielded satisfactory results...
Type 2 Diabetes Mellitus (DM), or adult-onset diabetes, is being considered as a new pandemia. Cardiovascular disease is the major cause of morbidity and mortality in type 2 DM, due to arterial structure and function changes. Assessment of arterial structure and biomechanics, by non-invasive methods and parameters, can be used to detect early alterations related to DM.
To prevent the threat of Cardiovascular Disease (CVD) related deaths, the usage of mobile phone based computational platforms, body sensors and wireless communications is proliferating. Since mobile phones have limited computational resources, existing PC based complex CVD detection algorithms are often unsuitable for wireless telecardiology applications. Moreover, if the existing Electrocardiography...
Twenty patients with cardiovascular diseases were examined using a 1.5-T magnetic resonance imaging (MRI) unit, and several parameters of both ventricles, such as ejection fraction (EF), end-diastolic and end-systolic volumes (EDV and ESV, respectively), were quantified by an experienced operator using two methods: 1) our semiautomatic segmentation method based on edge detection, iterative thresholding...
Obstructive sleep apnea (OSA) is a common sleeping disorder resulting in the temporary blockage of the upper airways that can lead to increased hypertension and risk to other cardiovascular diseases. Most sleep apnea cases currently remain undiagnosed due to cost and resource limitations of overnight polysomnography at sleep laboratories. In this project, we demonstrate a Simulink-based, modular and...
As the number of cardiovascular related deaths is increasing not only in the western world but also in the developing countries, and there are only limited cardiac diagnosis related resources, it is expected that many healthcare centres will turn to automated diagnosis of ECGs for large number of patients. While systems and tools have been proposed and developed for a handful of cardiovascular diseases,...
Wrist pulse waveform analysis is common in traditional Chinese medicine (TCM) engineering and diagnosis modernization. Nonlinear dynamics theory has been a tool in the analysis of physiological signals containing some nonlinear and chaotic information indispensable. The chaotic properties of wrist pulse containing a wealth of human physiological and pathological information were seldom studied. An...
For two non-invasive measurements, Pulse Wave Velocity by Digital Volume Pulse and Pulse Wave Velocity by Digital Volume Pulse Easy, only a few minutes are needed for self arterial stiffness assessment. But since they have some limitations for those who are not healthy, ECG is used in this study are the common reference point for performance enhancement. Fifteen subjects without cardiovascular disease...
Heart sound is a valuable biosignal for early detection of a large set of cardiac diseases. Ambient and physiological noise interference is one of the most usual and high probable incidents during heart sound acquisition. It may change the prominent and crucial characteristics of heart sound which may possess important information for heart disease diagnosis. In this paper, we propose a new method...
The sleep apnea syndrome is a real public health problem. Improving its diagnosis using the polysomnography is of huge importance. Optisas was a visual method allowing translating the polysomnographic data into a meaningful image. In a previous paper, it was shown to bring extrainformation in 62% of cases. Here its capacity for displaying information of the same relevance as the one got using the...
The effectiveness of an imaging technique is often based on the ability to image quantitatively both morphological and physiological functions of the tissue. Here we present several ultrasound-based imaging techniques capable of visualizing both structural and functional properties of living tissue. Each imaging system utilizes custom-made, targeted nanoparticles developed to probe specific molecular...
Cardiovascular diseases are important disease to affecting our world recently. Numerical and experimental simulations are rapidly increasing in this research area. Blood volume pulse uses frequently to diagnose and treatment of this kind of disease. Data was obtained from modeling of blood vessel and blood flow in vitro experimental system, supports for instruct to direction diagnose and treatment...
Due to the fact that there exist only a small number of complex systems in artificial immune systems (AISs) that solve nonlinear problems, there is a need to develop nonlinear AIS approaches that would be among the well-known solution methods. In this study, we developed a kernel-based AIS to compensate for this deficiency by providing a nonlinear structure via transformation of distance calculations...
This paper describes the development of a bidirectional pulsed-wave ultrasound Doppler blood flow measuring system using a miniature CMUT array suitable for minimally invasive diagnosis. On this flowmeter, the CMUT devices, integrated on a silicon probe smaller in diameter than a human' hair, were used both for ultrasound transmission and reception. The Doppler shift was recognized by comparing the...
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