BioMedical Engineering OnLine

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Multi-phase cycle coding for SSVEP based brain-computer interfaces
Source, January 16, 2015
Background: Brain-computer interfaces (BCIs) based on Steady State Visual Evoked Potential (SSVEP) have attracted more and more attentions for their short time response and high information transfer rate (ITR). The use of a high stimulation frequency (from 30Hz to 40Hz) is more comfortable for users...
Design and development of a content-based medical image retrieval system for spine vertebrae irregularity
Source, January 16, 2015
Background: Content-based medical image retrieval (CBMIR) system enables medical practitioners to perform fastdiagnosis through quantitative assessment of the visual information of various modalities. Methods: In this paper, a more robust CBMIR system that deals with both cervical and lumbar vertebr...
QSIM: quantitative structured illumination microscopy image processing in ImageJ
Source, January 14, 2015
Background: Structured illumination microscopy has been extensively used in biological imaging due to its low cost and easy implementation. However, the lack of quantitative imaging capability limits its application in absolute irradiance measurements.MethodWe have developed a quantitative structure...
A comparative analysis of swallowing accelerometry and sounds during saliva swallows
Source, January 12, 2015
Background: Accelerometry (the measurement of vibrations) and auscultation (the measurement of sounds) areboth non-invasive techniques that have been explored for their potential to detect abnormalitiesin swallowing. The differences between these techniques and the information they capture aboutswal...
Brain MR image denoising for Rician noise using pre-smooth non-local means filter
Source, January 08, 2015
Background: Magnetic resonance imaging (MRI) is corrupted by Rician noise, which is image dependent and computed from both real and imaginary images. Rician noise makes image-based quantitative measurement difficult. The non-local means (NLM) filter has been proven to be effective against additive n...
Dynamic behavior of suture-anastomosed arteries and implications to vascular surgery operations
Source, January 06, 2015
Background: Routine vascular surgery operations involve stitching of disconnected human arteries with themselves or with artificial grafts (arterial anastomosis). This study aims to extend current knowledge and provide better-substantiated understanding of the mechanics of end-to-end anastomosis thr...
An objective assessment method for frequency selectivity of the human auditory system
Source, December 18, 2014
Background: Frequency selectivity (FS) is an important aspect of auditory function, and is typically described by a tuning curve function. Sharply tuned curves represent a higher acuity in detecting frequency differences, and conversely, broadly tuned curves demonstrate a lower acuity. One way of ob...
Interactive simulator for e-Learning environments: a teaching software for health care professionals
Source, December 18, 2014
There is an established tradition of cardiovascular simulation tools, but the application of this kind of technology in the e-Learning arena is a novel approach. This paper presents an e-Learning environment aimed at teaching the interaction of cardiovascular and lung systems to health-care professi...
Real-time estimation of respiratory rate from a photoplethysmogram using an adaptive lattice notch filter
Source, December 17, 2014
Background: Many researchers have attempted to acquire respiratory rate (RR) information from a photoplethysmogram (PPG) because respiration affects the waveform of the PPG. However, most of these methods were difficult to operate in real-time because of their complexity or computational requirement...
Simulation of in vivo dynamics during robot assisted joint movement
Source, December 16, 2014
Background: Robots are very useful tools in orthopedic research. They can provide force/torque controlled specimen motion with high repeatability and precision. A method to analyze dissipative energy outcome in an entire joint was developed in our group. In a previous study, a sheep knee was flexed ...
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