International Conference of the IEEE Engineering in Medicine and Biology Society. Proceedings
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An efficient steganography method for hiding patient confidential information.
International Conference of the IEEE Engineerin... 2014:222 (2014) PMID 25569937We propose in this paper a new steganography algorithm for hiding patient confidential information. It utilizes Pixel Value Differencing (PVD) to identify contrast regions in the image and a Hamming code that embeds 3 secret message bits into 4 bits of the cover image. In order to preserve the conte...
Anisotropic diffusion filter based edge enhancement for the segmentation of carotid intima-media layer in ultrasound images using variationa...
International Conference of the IEEE Engineerin... 2014:238 (2014) PMID 25569941In this work an attempt has been made to enhance the edges and segment the boundary of intima-media layer of Common Carotid Artery (CCA) using anisotropic diffusion filter and level set method. Ultrasound B mode longitudinal images of normal and abnormal images of common carotid arteries are used in...
Automated analysis of respiratory behavior for the prediction of apnea in infants following general anesthesia.
International Conference of the IEEE Engineerin... 2014:262 (2014) PMID 25569947We identified the occurrence of respiratory pauses in 24 infants at age risk for POA. We determined the POA category for each infant by using K-medoids to cluster the duration of the longest respiratory pause. Two clusters were identified, corresponding to APNEA and NO-APNEA, with a threshold of 14....
Computational study of the influence of callus porosity on ultrasound propagation in healing bones.
International Conference of the IEEE Engineerin... 2014:684 (2014) PMID 25570051We investigate the influence of the callus pores' size and concentration on ultrasound propagation in a long bone at a late healing stage. Different excitation frequencies are applied in the range of 300 kHz-1 MHz. A 2D geometry is developed and axial transmission calculations are performed based on...
Energy-efficient adaptive modulation in wireless communication for implanted medical devices.
International Conference of the IEEE Engineerin... 2014:918 (2014) PMID 25570109We first examine the energy efficiency of different digital modulation schemes in a basic wireless implant system. We point out that using a fixed type of modulation does not help to achieve the best energy efficiency in the implant system that has varying channel conditions. We then propose an adap...
Artefact detection in neonatal EEG.
International Conference of the IEEE Engineerin... 2014:926 (2014) PMID 25570111We propose a general artefact detection system (GADS) based on the analysis of the neonatal EEG. This system aims to detect both major and minor artefacts (a distinction based primarily on amplitude). As a result, a two-stage system was constructed based on 14 features extracted from EEG epochs at m...
Calibration-free gaze tracking for automatic measurement of visual acuity in human infants.
International Conference of the IEEE Engineerin... 2014:962 (2014) PMID 25570120I know, it is the first time to apply the vision-based gaze tracking in the measurement of visual acuity. Firstly, a polynomial of pupil center-cornea reflections (PCCR) vector is presented to be used as the gaze feature. Then, Gaussian mixture models (GMM) is employed for gaze behavior classificati...
Using Bayesian surprise to detect calcifications in mammogram images.
International Conference of the IEEE Engineerin... 2014:1091 (2014) PMID 25570152We present a new technique to detect calcifications in mammogram images. The main objective is to support radiologists with automatic detection methods applied to medical images. Motivated by the fact that calcifications, when compared to the rest of the image, exhibit irregular characteristics, a t...
Investigating the utility of in vivo bio-impedance spectroscopy for the assessment of post-ischemic myocardial tissue.
International Conference of the IEEE Engineerin... 2014:1111 (2014) PMID 25570157We investigated the utility of in vivo bio-impedance spectroscopy (BIS) in a large post-infarct animal model for differentiation between normal and infarcted tissue. We also investigated the quantitative effects of adipose and collagen on BIS assessment of myocardium. The results indicate that the d...
Realization of magnetic resonance current density imaging at 3 tesla.
International Conference of the IEEE Engineerin... 2014:1115 (2014) PMID 25570158Magnetic Resonance Current Density Imaging (MRCDI) is an imaging modality, which reconstructs electrical current density distribution inside a material by using Magnetic Resonance Imaging (MRI) techniques. In this study, a current source with maximum current injection capability of 224.7mA, under 1k...