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In this paper examination of the template modeling process using the Active Appearance Modeling (AAM) approach for automatic detection of lung nodules is investigated. A template matching approach is formulated to compute a similarity score between the AAM templates and the input lung CT slice, where the goal is to maximize the similarity measure at different image pixels to increase nodule detection...
A computer-aided detection algorithm that is useful for diagnosing brain stroke is presented. Continuous Wavelet Transform matching filters is applied to identify the backscattered microwave signals from abnormal objects in the brain. The simulation results show that energy distribution of filters outputs in wavelets domain., in terms of time translation of correlation peak and range of scales in...
A cardiovascular (CV) model for healthy subjects under physical stress, based on luczak's first and second models, is presented in this paper. An actual (measured) heart rate (HR) and blood pressure (BP) signals for 12 healthy subjects were utilized for model identification. The pattern search method was employed to optimize the model output signals and to estimate the missing parameters. The output...
In this work, we present a new method for analyzing cardiac tagged Magnetic Resonance Imaging (tMRI). The method combines two major tracking techniques: Harmonic Phase (HARP) and Optical Flow (OF). The results of the two techniques are fused together to accurately estimate the displacement of each myocardium point. The developed methods were tested using numerical MRI phantom at different SNR levels...
This paper presents the design and prototype construction of a remotely controlled mobile robot which can be used in a hospital environment. The robot relies on the hospital WLAN for remote control and transmission of data in both directions between the robot and the control room. Lifting, handling and transporting radioactive materials within the hospital is one of the primary functions carried out...
This paper presents a methodology for running NGS read mapping tools in the cloud environment based on the MapReduce programming paradigm. As a demonstration, the recently developed and robust sequence alignment tool, BFAST, is used within our methodology to handle massive datasets. The results of our experiments show that the transformation of existing read mapping tools to run within the MapReduce...
Magnetic resonance imaging allows a number of imaging techniques and protocols that can be used to capture the different aspects of the cardiac function and structure. The produced amount of data is huge and its classification and/or retrieval based on its visual content are necessary for educational and training purposes. In this work, we propose a method for classification and retrieving cardiac...
In this paper the temperature distribution on the corneal surface is computed based on solving a one dimensional Bioheat equation analytically. The computation simplified the geometry into one dimensional form and considered natural convection (from aqueous humor) at the posterior and radiation (from laser source) boundary conditions with consideration of cooling due to evaporation at the anterior...
Operating theatre (OT) is one of the most critical departments within the hospital. In developing countries, no allocation of sufficient areas for OT, that results in sharing of many services in the same area while ignoring others. Facilities layout planning (FLP) is widely used in industrial engineering for designing block layout plans as it considers the assignment of services to the proper locations...
Macular edema is an advance stage of diabetic retinopathy which affects central vision of diabetes patients. The main cause of edema is the appearance of exudates near or on macular region in human retina. An automated system for early detection of macular edema should identify all possible exudates present on the surface of retina. In this paper, we present a method for the identification of exudates...
Early detection of breast cancer is the most effective method of reducing mortality. Mammography is at present the best available technique for early detection of breast cancer. The most common breast abnormalities that may indicate breast cancer are masses and calcifications. In mammograms, cancer is not easily detected by the eyes because of the bad imaging quality. To improve the correct diagnosis...
In this work we want to make use of a novel framework of compressed sensing (CS) sampling theory to reconstruct the Doppler ultrasound signal. CS aim to reconstruct signals and images from significantly fewer measurements. Doppler ultrasound is one of the most non-invasive diagnostic techniques. The present data acquisition methods use much data to acquire the image, this cause in increasing the process...
Biometrics are the personal physiological and behavioral characteristics which are mostly used for personal recognition. Today, biometric based security systems such as fingerprint, iris and face recognition are used everywhere especially in high security areas. Human retina is another source of biometric system which provides the most reliable and stable means of authentication. In this paper, we...
This paper describes a design of a hybrid adaptive filter for feedback echo cancellation in hearing aids. The proposed design utilizes a multiplexing direct form (MDF) FIR filter, and the LMS algorithm with order adaptation in order to reduce a requirement of a chip area and to minimize power consumption wasted in activities of non active taps. The proposed design can operate up to 6.25MS/s, and could...
Medical equipment management life cycle considers various stages ranging from planning to disposal or replacement. Replacement decision is critical and essential stage of medical equipment. A variety of criteria contributes to make an intelligent replacement decision. We enhance the Fault Tree Analysis (FTA) model for replacement of medical equipment, considering a combination of technical, financial,...
4D ultrasound imaging extends the real-time ca-pability of ultrasound to display a real-time volume, which can then be explored by the sonographer. Surface Rendering is one of the common modes used to display the 3D datasets. Surface shading is required to visualize the surface and en-hances the surface contrast. Here, we show a surface rendering implementation based on three passes. In the first...
The segmentation of MR images is of great interests in automatic medical diagnosis. However, such images are corrupted by Rician noise and with fuzzy edges. The non-additive and intensity dependant features of Rician noise make image processing very challenging. In this paper, a combination of techniques are carefully selected, tailored, and organized to improve the image quality for automatic segmentation...
Frequency domain analysis is one of the most common analysis techniques in signal and image processing. Fast Fourier Transform (FFT) is a well know tool used to perform such analysis by obtaining the frequency spectrum for time- or spatial-domain signals and vice versa. FFT-Shift is a subsequent operation used to handle the resulting arrays from this stage as it centers the DC component of the resulting...
To evaluate the effect of bar position in implant-retained mandibular overdenture on stress distribution induced in bone surrounding the implant, a three dimensional (3D) model is designed by simulating an edentulous mandible, restored with mandibular overdenture and retained by 4 widely separated implants. All parameters were fixed except for the position of the bar segments. Vertical and oblique...
This paper introduces a discipline to improve the finger vein biometric system accuracy and performance by incorporating multiple finger vein patterns for each person. Instead of just a single finger, we acquired 2 fingers from the right hand and 2 from the left hand to represent a single identity. Firstly, each finger region was segmented then the vein tree for each finger was extracted using maximum...
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