There is limited information on correlates of left ventricular wall motion (WM) abnormalities in ambulatory patients with hypertension and ECG left ventricular hypertrophy by Cornell voltage-duration product and/or Sokolow-Lyon voltage criteria. Therefore, we assessed the prevalence and the correlates of echocardiographic global and segmental left ventricular WM abnormalities in 942 hypertensiv...

Background: The magnetic resonance imaging (MRI)-based radiotherapy planning method have been considered in recent years because of the advantages of MRI and the problems of planning with two images modality. The first step in MRI-based radiotherapy is to evaluate magnetic resonance (MR) images geometric distortion. Therefore, the present study aimed to evaluate system related geometric distort...

485 walls to detect multiple echo pulses. The TOF determination as well as the detection of the echo pulses is accomplished by searching the correlation peaks of the matched filter output. The invariant spatial relationship between f he ultrasonic sensor and the reflectors in our method allows simple but robust matching between the echoes obtained at different sensor orientations. The multiple ...

INTRODUCTION AND OBJECTIVES To determine whether the reproducibility of left ventricular outflow tract (LVOT) area measurement is greater with three-dimensional echocardiographic (3D-echo) planimetry than with conventional 2D-echo. To determine the LVOT circularity index by means of 3D-echo. To determine the usefulness of measuring the LVOT area by 3D-echo for quantifying the severity of valvul...

PURPOSE To compare the sensitivity of conventional spin-echo, fast spin-echo, fast fluid-attenuated inversion recovery (FLAIR), and turbo gradient spin-echo MR sequences in the detection of multiple sclerosis lesions. METHODS Conventional spin-echo, fast spin-echo, fast FLAIR, and turbo gradient spin-echo sequences were performed on a 1.0-T MR imager in seven patients with clinically definite...

Echoed parts of Quranic accent (Qiraat) signals are exposed to reverberation of signals especially if they are listened to in a conference room or the Quranic recordings found in different media such as the web. Quranic verse rules identification/Tajweed are prone to additive noise and may reduce classification results. This research work aims to present our work towards Quranic accents (Qiraat...

Echo State Networks (ESNs) constitute an emerging field within Machine Learning research. As opposed to other Recurrent Neural Networks, they are compu-tationally cheap, and thus effectively offer a much greater repertoire of dynamics. Owing to their ability to retain information about long previous history as the " echo " states, coupled with their mathematical simplicity and ease of use, ESNs...

This paper presents evaluations of a nonlinear-echo suppressor based on a frequency-domain model of highly nonlinear residual echo. The residual-echo model, which is based on correlation between spectral amplitudes of residual echo and echo replica, is evaluated by a regression analysis. The results justify the nonlinear-echo suppressor structure. The output signals are subjectively evaluated b...