Results 91 to 100 of about 343,715 (271)
Changes in the QRS complex after aortic valve replacement. [PDF]
, 1972 Ferenc Folláth, W. R. Ginks
openalex +1 more source
On the detection of myocardial scar based on ECG/VCG analysis
, 2013 In this paper, we address the problem of detecting the presence of myocardial scar from standard ECG/VCG recordings, giving effort to develop a screening system for the early detection of scar in the point-of-care.
Curzen, Nick +7 more
core +1 more source
ECG signal analysis using modified S-transform
Healthcare Technology Letters, 2017 Accurate detection of QRS complexes is essential for the investigation of heart rate variability. Several transform techniques have been proposed and extensively used for the detection and analysis of QRS complexes.
Birendra Biswal
doaj +1 more source
Comparisons of wavelet functions in QRS signal to noise ratio enhancement and detection accuracy [PDF]
arXiv, 2015 We compare the capability of wavelet functions used for noise removal in preprocessing step of a QRS detection algorithm in the electrocardiogram (ECG) signal. The QRS signal to noise ratio enhancement and the detection accuracy of each wavelet function are evaluated using three measures: (1) the ratio of the maximum beat amplitude to the minimum beat ...
arxiv
Computer Aided ECG Analysis - State of the Art and Upcoming Challenges
, 2013 In this paper we present current achievements in computer aided ECG analysis and their applicability in real world medical diagnosis process. Most of the current work is covering problems of removing noise, detecting heartbeats and rhythm-based analysis.
Car, Sinisa, Padavic, Ivan, Velic, Marko
core +1 more source
QRS COMPLEX DURATION AND CLINICAL FEATURES OF PATIENTS WITH PERMANENT PACEMAKERS
Journal of V. N. Karazin Kharkiv National University: Series Medicine, 2013 125 patients (57 – women, 68 – males) with permanent pacing were examined. Among the indications for pacemaker installation there were atrio-ventricular block (AV-block) – 77 people (62 ± 4 %), sick sinus node syndrome (SSNS) – 32 patients (26 ± 4 ...
I. V. Shanina +3 more
doaj
Quasi-redirecting boundaries of non-positively curved groups [PDF]
arXivThe quasi-redirecting (QR) boundary is a close generalization of the Gromov boundary to all finitely generated groups. In this paper, we establish that the QR boundary exists as a topological space for several well-studied classes of groups. These include fundamental groups of irreducible non-geometric 3-manifolds, groups that are hyperbolic relative ...
arxiv
Interpolation-Based QR Decomposition in MIMO-OFDM Systems [PDF]
arXiv, 2009 Detection algorithms for multiple-input multiple-output (MIMO) wireless systems based on orthogonal frequency-division multiplexing (OFDM) typically require the computation of a QR decomposition for each of the data-carrying OFDM tones. The resulting computational complexity will, in general, be significant, as the number of data-carrying tones ranges ...
arxiv
Journal of Veterinary Research, 2018 Ventricular rhythm disturbances are a common pathology in human and veterinary medicine. In humans, the algorithmic approach is used to differentiate wide QRS complex tachycardia.
Michałek Marcin +5 more
doaj +1 more source
Two Methods for Decreasing the Computational Complexity of the MIMO ML Decoder [PDF]
IEICE Trans. Fundamentals, vol. E87-A, no. 10, pp. 2571-2576, Oct.
2004, 2004 We propose use of QR factorization with sort and Dijkstra's algorithm for decreasing the computational complexity of the sphere decoder that is used for ML detection of signals on the multi-antenna fading channel. QR factorization with sort decreases the complexity of searching part of the decoder with small increase in the complexity required for ...
arxiv