A telemedicine instrument for remote evaluation of tremor: design and initial applications in fatigue and patients with Parkinson''s Disease
Source, 15 hours ago
IntroductionA novel system that combines a compact mobile instrument and Internet communications is presented in this paper for remote evaluation of tremors. The system presents a high potential application in Parkinson''s disease and connects to the Internet through a TCP/IP protocol. Tremor transd...
Biological effects of exposure to magnetic resonance imaging: an overview
Source, 15 hours ago
The literature on biological effects of magnetic and electromagnetic fields commonly utilized in magnetic resonance imaging systems is surveyed here. After an introduction on the basic principles of magnetic resonance imaging and the electric and magnetic properties of biological tissues, the basic ...
Influence of the measurement method of features in ultrasound images of the thyroid in the diagnosis of Hashimoto''s disease
Source, 15 hours ago
IntroductionThis paper shows the influence of a measurement method of features in the diagnosis of Hashimoto's disease. Sensitivity of the algorithm to changes in the parameters of the ROI, namely shift, resizing and rotation, has been presented. The obtained results were also compared to the method...
Oscillometric measurement of systolic and diastolic blood pressures validated in a physiologic mathematical model
Source, 15 hours ago
Background: The oscillometric method of measuring blood pressure with an automated cuff yields valid estimates of mean pressure but questionable estimates of systolic and diastolic pressures. Existing algorithms are sensitive to differences in pulse pressure and artery stiffness. Some are closely gu...
Challenges, issues and trends in fall detection systems
Source, 15 hours ago
Since falls are a major public health problem among older people, the number of systems aimed at detecting them has increased dramatically over recent years. This work presents an extensive literature review of fall detection systems, including comparisons among various kinds of studies. It aims to ...
Heart energy signature spectrogram for cardiovascular diagnosis
Source, 15 hours ago
A new method and application is proposed to characterize intensity and pitch of human heart sounds and murmurs. Using recorded heart sounds from the library of one of the authors, a visual map of heart sound energy was established. Both normal and abnormal heart sound recordings were studied. Repres...
How smartphones are changing the face of mobile and participatory healthcare: an overview, with example from eCAALYX
Source, 15 hours ago
The latest generation of smartphones are increasingly viewed as handheld computers rather than as phones, due to their powerful on-board computing capability, capacious memories, large screens and open operating systems that encourage application development. This paper provides a brief state-of-the...
Effects of acute hypoxia on heart rate variability, sample entropy and cardiorespiratory phase synchronization
Source, July 05, 2014
Background: Investigating the responses of autonomic nervous system (ANS) in hypoxia may provide some knowledge about the mechanism of neural control and rhythmic adjustment. The integrated cardiac and respiratory system display complicated dynamics that are affected by intrinsic feedback mechanisms...
System and measurement method for binocular pupillometry to study pupil size variability
Source, June 29, 2014
Background: An objective and noninvasive examination of pupil size variability can be used to assess the activity of the autonomous nervous system. We designed a system that enables binocular, fast, and accurate recordings of different types of pupil variabilities, which are synchronous with other b...
Establishment of a pancreatic stem cell line from fibroblast-derived induced pluripotent stem cells
Source, June 11, 2014
Background: For cell therapies to treat diabetes, it is important to produce a sufficient number of pancreatic endocrine cells that function similarly to primary islets. Induced pluripotent stem (iPS) cells represent a potentially unlimited source of functional pancreatic endocrine cells. However, t...
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