Comput Methods Programs Biomed - Visual data mining with self-organising maps for ventricular fibrillation analysis.

Tópicos

{ signal(2180) analysi(812) frequenc(800) }
{ patient(1821) servic(1111) care(1106) }
{ treatment(1704) effect(941) patient(846) }
{ health(3367) inform(1360) care(1135) }
{ group(2977) signific(1463) compar(1072) }
{ high(1669) rate(1365) level(1280) }
{ problem(2511) optim(1539) algorithm(950) }
{ learn(2355) train(1041) set(1003) }
{ research(1085) discuss(1038) issu(1018) }
{ visual(1396) interact(850) tool(830) }
{ time(1939) patient(1703) rate(768) }
{ structur(1116) can(940) graph(676) }
{ drug(1928) target(777) effect(648) }
{ detect(2391) sensit(1101) algorithm(908) }
{ take(945) account(800) differ(722) }
{ general(901) number(790) one(736) }
{ risk(3053) factor(974) diseas(938) }
{ import(1318) role(1303) understand(862) }
{ analysi(2126) use(1163) compon(1037) }
{ result(1111) use(1088) new(759) }
{ model(3404) distribut(989) bayesian(671) }
{ imag(1947) propos(1133) code(1026) }
{ measur(2081) correl(1212) valu(896) }
{ sequenc(1873) structur(1644) protein(1328) }
{ imag(2830) propos(1344) filter(1198) }
{ chang(1828) time(1643) increas(1301) }
{ concept(1167) ontolog(924) domain(897) }
{ control(1307) perform(991) simul(935) }
{ model(2220) cell(1177) simul(1124) }
{ method(984) reconstruct(947) comput(926) }
{ search(2224) databas(1162) retriev(909) }
{ howev(809) still(633) remain(590) }
{ data(3963) clinic(1234) research(1004) }
{ blood(1257) pressur(1144) flow(957) }
{ model(3480) simul(1196) paramet(876) }
{ monitor(1329) mobil(1314) devic(1160) }
{ state(1844) use(1261) util(961) }
{ sampl(1606) size(1419) use(1276) }
{ can(981) present(881) function(850) }
{ cancer(2502) breast(956) screen(824) }
{ use(976) code(926) identifi(902) }
{ use(1733) differ(960) four(931) }
{ decis(3086) make(1611) patient(1517) }
{ process(1125) use(805) approach(778) }
{ activ(1452) weight(1219) physic(1104) }
{ method(1969) cluster(1462) data(1082) }
{ can(774) often(719) complex(702) }
{ data(1737) use(1416) pattern(1282) }
{ inform(2794) health(2639) internet(1427) }
{ system(1976) rule(880) can(841) }
{ imag(1057) registr(996) error(939) }
{ bind(1733) structur(1185) ligand(1036) }
{ method(1219) similar(1157) match(930) }
{ featur(3375) classif(2383) classifi(1994) }
{ network(2748) neural(1063) input(814) }
{ imag(2675) segment(2577) method(1081) }
{ patient(2315) diseas(1263) diabet(1191) }
{ studi(2440) review(1878) systemat(933) }
{ motion(1329) object(1292) video(1091) }
{ assess(1506) score(1403) qualiti(1306) }
{ surgeri(1148) surgic(1085) robot(1054) }
{ framework(1458) process(801) describ(734) }
{ error(1145) method(1030) estim(1020) }
{ clinic(1479) use(1117) guidelin(835) }
{ algorithm(1844) comput(1787) effici(935) }
{ extract(1171) text(1153) clinic(932) }
{ method(1557) propos(1049) approach(1037) }
{ data(1714) softwar(1251) tool(1186) }
{ design(1359) user(1324) use(1319) }
{ care(1570) inform(1187) nurs(1089) }
{ featur(1941) imag(1645) propos(1176) }
{ case(1353) use(1143) diagnosi(1136) }
{ studi(1410) differ(1259) use(1210) }
{ perform(999) metric(946) measur(919) }
{ system(1050) medic(1026) inform(1018) }
{ model(2341) predict(2261) use(1141) }
{ compound(1573) activ(1297) structur(1058) }
{ perform(1367) use(1326) method(1137) }
{ studi(1119) effect(1106) posit(819) }
{ spatial(1525) area(1432) region(1030) }
{ record(1888) medic(1808) patient(1693) }
{ ehr(2073) health(1662) electron(1139) }
{ research(1218) medic(880) student(794) }
{ patient(2837) hospit(1953) medic(668) }
{ model(2656) set(1616) predict(1553) }
{ data(2317) use(1299) case(1017) }
{ age(1611) year(1155) adult(843) }
{ medic(1828) order(1363) alert(1069) }
{ cost(1906) reduc(1198) effect(832) }
{ gene(2352) biolog(1181) express(1162) }
{ data(3008) multipl(1320) sourc(1022) }
{ first(2504) two(1366) second(1323) }
{ intervent(3218) particip(2042) group(1664) }
{ activ(1138) subject(705) human(624) }
{ use(2086) technolog(871) perceiv(783) }
{ health(1844) social(1437) communiti(874) }
{ implement(1333) system(1263) develop(1122) }
{ survey(1388) particip(1329) question(1065) }
{ estim(2440) model(1874) function(577) }
{ method(2212) result(1239) propos(1039) }

Resumo

Detection of ventricular fibrillation (VF) at an early stage is being deeply studied in order to lower the risk of sudden death and allows the specialist to have greater reaction time to give the patient a good recovering therapy. Some works are focusing on detecting VF based on numerical analysis of time-frequency distributions, but in general the methods used do not provide insight into the problem. However, this study proposes a new methodology in order to obtain information about this problem. This work uses a supervised self-organising map (SOM) to obtain visually information among four important groups of patients: VF (ventricular fibrillation), VT (ventricular tachycardia), HP (healthy patients) and AHR (other anomalous heart rates and noise). A total number of 27 variables were obtained from continuous surface ECG recordings in standard databases (MIT and AHA), providing information in the time, frequency, and time-frequency domains. self-organising maps (SOMs), trained with 11 of the 27 variables, were used to extract knowledge about the variable values for each group of patients. Results show that the SOM technique allows to determine the profile of each group of patients, assisting in gaining a deeper understanding of this clinical problem. Additionally, information about the most relevant variables is given by the SOM analysis.

Resumo Limpo

detect ventricular fibril vf earli stage deepli studi order lower risk sudden death allow specialist greater reaction time give patient good recov therapi work focus detect vf base numer analysi timefrequ distribut general method use provid insight problem howev studi propos new methodolog order obtain inform problem work use supervis selforganis map som obtain visual inform among four import group patient vf ventricular fibril vt ventricular tachycardia hp healthi patient ahr anomal heart rate nois total number variabl obtain continu surfac ecg record standard databas mit aha provid inform time frequenc timefrequ domain selforganis map som train variabl use extract knowledg variabl valu group patient result show som techniqu allow determin profil group patient assist gain deeper understand clinic problem addit inform relev variabl given som analysi

Resumos Similares

J Clin Monit Comput - A quantitative EEG method for detecting post clamp changes during carotid endarterectomy. ( 0,699242473210553 )
Comput. Biol. Med. - Binary symbolic dynamics classifies heart rate variability patterns linked to autonomic modulations. ( 0,696961189593259 )
Comput Methods Programs Biomed - Averaging in vitro cardiac field potential recordings obtained with microelectrode arrays. ( 0,693787399958342 )
Methods Inf Med - Prediction of countershock success in patients using the autoregressive spectral estimation. ( 0,691170769757397 )
Methods Inf Med - Linear and fractal heart rate dynamics during sleep at high altitude. Investigation with textile technology. ( 0,690308775263666 )
Telemed J E Health - A regional prehospital electrocardiogram network with a single telecardiology hub for public emergency medical service: technical requirements, logistics, manpower, and preliminary results. ( 0,689524134727163 )
Comput Methods Programs Biomed - QRS detection based on wavelet coefficients. ( 0,687656257785188 )
Artif Intell Med - Comparative study of approximate entropy and sample entropy robustness to spikes. ( 0,686959386834761 )
Med Biol Eng Comput - Classification of surface electromyographic signals by means of multifractal singularity spectrum. ( 0,682610479109151 )
Med Biol Eng Comput - Directional dual-tree complex wavelet packet transforms for processing quadrature signals. ( 0,682195349848431 )
Comput Methods Programs Biomed - Linear and nonlinear analysis of normal and CAD-affected heart rate signals. ( 0,68034488758868 )
J Med Syst - Multi-feature characterization of epileptic activity for construction of an automated internet-based annotated classification. ( 0,677966964332267 )
Methods Inf Med - Long-term correlations and complexity analysis of the heart rate variability signal during sleep. Comparing normal and pathologic subjects. ( 0,675092826701241 )
Comput Math Methods Med - A wavelet transform based method to determine depth of anesthesia to prevent awareness during general anesthesia. ( 0,674258787602798 )
J Med Syst - Design and development of a heart rate variability analyzer. ( 0,67116683447239 )
J Clin Monit Comput - ECG myogenic artifacts during clonic seizures: a disturbing (and interesting) finding. ( 0,666158666926604 )
Comput Math Methods Med - Spectral asymmetry and Higuchi's fractal dimension measures of depression electroencephalogram. ( 0,662787689753542 )
Comput. Biol. Med. - A fixed point algorithm for extracting the atrial activity in the frequency domain. ( 0,66152900061826 )
Comput. Biol. Med. - Analysis of heart rate variability using fuzzy measure entropy. ( 0,660443568962058 )
Comput Methods Programs Biomed - Epileptic seizure detection in EEGs signals using a fast weighted horizontal visibility algorithm. ( 0,657455995891817 )
J Clin Monit Comput - Reversal of neuromuscular blockade by sugammadex does not affect EEG derived indices of depth of anesthesia. ( 0,656236132360214 )
Med Biol Eng Comput - A method for continuously assessing the autonomic response to music-induced emotions through HRV analysis. ( 0,654989304501218 )
Comput. Biol. Med. - Current methods in electrocardiogram characterization. ( 0,653485602563452 )
Comput Methods Programs Biomed - Optimal channel selection for analysis of EEG-sleep patterns of neonates. ( 0,650499699454632 )
Comput Math Methods Med - Higher-order spectrum in understanding nonlinearity in EEG rhythms. ( 0,650358258134169 )
Med Biol Eng Comput - Heart rate variability and nonlinear dynamic analysis in patients with stress-induced cardiomyopathy. ( 0,649320877980144 )
Comput Methods Programs Biomed - Increasing sensitivity in the measurement of heart rate variability: the method of non-stationary RR time-frequency analysis. ( 0,648200284796499 )
Comput Methods Programs Biomed - Automatic heart sound detection in pediatric patients without electrocardiogram reference via pseudo-affine Wigner-Ville distribution and Haar wavelet lifting. ( 0,647400461772208 )
Comput Math Methods Med - A novel automatic detection system for ECG arrhythmias using maximum margin clustering with immune evolutionary algorithm. ( 0,646854412108649 )
Comput Methods Programs Biomed - Automated sleep stage identification system based on time-frequency analysis of a single EEG channel and random forest classifier. ( 0,646730356441518 )
Comput. Biol. Med. - Estimating cognitive workload using wavelet entropy-based features during an arithmetic task. ( 0,645118077654212 )
J Clin Monit Comput - The effect of skin incision on the electroencephalogram during general anesthesia maintained with propofol or desflurane. ( 0,645042708518133 )
Comput Math Methods Med - Corticomuscular coherence analysis on hand movement distinction for active rehabilitation. ( 0,644632225291774 )
Comput Math Methods Med - Patient specific seizure prediction system using Hilbert spectrum and Bayesian networks classifiers. ( 0,644512313460655 )
Med Biol Eng Comput - Reconstruction of gastric slow wave from finger photoplethysmographic signal using radial basis function neural network. ( 0,644105191930874 )
Comput Methods Programs Biomed - Analysis of normal and epileptic seizure EEG signals using empirical mode decomposition. ( 0,6431456783936 )
Comput. Biol. Med. - Path length entropy analysis of diastolic heart sounds. ( 0,639498342825936 )
Methods Inf Med - Quadratic Phase Couplings in the EEG of Premature and Full-term Newborn during Quiet Sleep. ( 0,638578479073888 )
Int J Neural Syst - Detection of driving fatigue by using noncontact EMG and ECG signals measurement system. ( 0,638126026149959 )
Comput Math Methods Med - An automated optimal engagement and attention detection system using electrocardiogram. ( 0,637606751138032 )
J Clin Monit Comput - Non-stationarity of EEG during wakefulness and anaesthesia: advantages of EEG permutation entropy monitoring. ( 0,635719746953852 )
Med Biol Eng Comput - QRS subtraction for atrial electrograms: flat, linear and spline interpolations. ( 0,634596839670704 )
IEEE J Biomed Health Inform - Single Trial Visual Evoked Potential Extraction using Partial Least Squares-based Approach. ( 0,634581597787254 )
Comput Math Methods Med - Probabilistic source separation for robust fetal electrocardiography. ( 0,632929065372441 )
Comput Methods Programs Biomed - QRS detection using S-Transform and Shannon energy. ( 0,632139541241014 )
J Med Syst - Analysis of infant cry through weighted linear prediction cepstral coefficients and Probabilistic Neural Network. ( 0,631309072163365 )
Comput Methods Programs Biomed - An R-peak detection method that uses an SVD filter and a search back system. ( 0,630968240637697 )
Med Biol Eng Comput - Characterization of QT and RR interval series during acute myocardial ischemia by means of recurrence quantification analysis. ( 0,630938832487015 )
J Telemed Telecare - Tele-EEG in the UK: a report of over 1,000 patients. ( 0,630531116864342 )
Methods Inf Med - Linear and nonlinear analysis of base lung sound in extrinsic allergic alveolitis patients in comparison to healthy subjects. ( 0,62952441643255 )
J Clin Monit Comput - Respiratory change in ECG-wave amplitude is a reliable parameter to estimate intravascular volume status. ( 0,629263307073198 )
Med Biol Eng Comput - Discrimination of left and right leg motor imagery for brain-computer interfaces. ( 0,62874130870481 )
Methods Inf Med - Robust detection of sleep apnea from Holter ECGs. Joint assessment of modulations in QRS amplitude and respiratory myogram interference. ( 0,627637550370257 )
Comput Methods Programs Biomed - Biomedical time series clustering based on non-negative sparse coding and probabilistic topic model. ( 0,626585925251953 )
Comput Methods Programs Biomed - Broadband noise suppression and feature identification of ECG waveforms using mathematical morphology and embedding theorem. ( 0,626246435103557 )
Methods Inf Med - Segmented Poincar? plot analysis for risk stratification in patients with dilated cardiomyopathy. ( 0,624848008024081 )
Methods Inf Med - Classification of sleep stages using multi-wavelet time frequency entropy and LDA. ( 0,624499417860698 )
Comput Methods Programs Biomed - Correlation method versus enhanced modified moving average method for automatic detection of T-wave alternans. ( 0,622531756254882 )
Med Biol Eng Comput - Multivariate short-term heart rate variability: a pre-diagnostic tool for screening heart disease. ( 0,621082082095011 )
Comput Methods Programs Biomed - Epileptic seizure classification in EEG signals using second-order difference plot of intrinsic mode functions. ( 0,620686276977287 )
Int J Neural Syst - Application of empirical mode decomposition (emd) for automated detection of epilepsy using EEG signals. ( 0,620435958292066 )
J Med Syst - Analysis of spike waves in epilepsy using Hilbert-Huang transform. ( 0,620211958816557 )
Comput. Biol. Med. - Effect of aerobic conditioning on ventricular activation: a principal components analysis approach to high-resolution electrocardiogram. ( 0,619736192527326 )
Comput. Biol. Med. - A novel electrocardiogram parameterization algorithm and its application in myocardial infarction detection. ( 0,61955191699097 )
Comput Math Methods Med - A harmonic linear dynamical system for prominent ECG feature extraction. ( 0,619408439465178 )
Med Biol Eng Comput - Modeling the relationship between Higuchi's fractal dimension and Fourier spectra of physiological signals. ( 0,618825544838814 )
Comput Methods Programs Biomed - Dual transmission model and related spectral content of the fetal heart sounds. ( 0,618640603942735 )
J Biomed Inform - A general framework for time series data mining based on event analysis: application to the medical domains of electroencephalography and stabilometry. ( 0,617000208131901 )
Telemed J E Health - Wireless patient monitoring system for patients with nasal obstruction. ( 0,616733098828963 )
Med Biol Eng Comput - Comparison of real beat-to-beat signals with commercially available 4?Hz sampling on the evaluation of foetal heart rate variability. ( 0,614930384918885 )
IEEE J Biomed Health Inform - A low-complexity ECG feature extraction algorithm for mobile healthcare applications. ( 0,613893287281524 )
J Telemed Telecare - ECG telemonitoring during home-based cardiac rehabilitation in heart failure patients. ( 0,613800020942061 )
Comput. Biol. Med. - Non-uniform multivariate embedding to assess the information transfer in cardiovascular and cardiorespiratory variability series. ( 0,613786684387619 )
Comput. Biol. Med. - Alcoholism-related alterations in spectrum, coherence, and phase synchrony of topical electroencephalogram. ( 0,613784697953063 )
Med Biol Eng Comput - Cross-correlation of EEG frequency bands and heart rate variability for sleep apnoea classification. ( 0,61345646480355 )
Neural Comput - Delay differential analysis of electroencephalographic data. ( 0,613387724886884 )
J Med Syst - Determining the appropriate amount of anesthetic gas using DWT and EMD combined with neural network. ( 0,613220931646365 )
Comput Math Methods Med - Analyzing EEG of quasi-brain-death based on dynamic sample entropy measures. ( 0,61286769434491 )
J Med Syst - Diagnosis of epilepsy from electroencephalography signals using multilayer perceptron and Elman Artificial Neural Networks and Wavelet Transform. ( 0,610042315642738 )
J Med Syst - Classification of arrhythmia using hybrid networks. ( 0,609979126004727 )
J Med Syst - Employment and comparison of different Artificial Neural Networks for epilepsy diagnosis from EEG signals. ( 0,609444065567305 )
Int J Neural Syst - Application of higher order cumulant features for cardiac health diagnosis using ECG signals. ( 0,608608037868565 )
J Med Syst - The effect of multiscale PCA de-noising in epileptic seizure detection. ( 0,607125794097298 )
Comput Methods Programs Biomed - An EEGLAB plugin to analyze individual EEG alpha rhythms using the channel reactivity-based method. ( 0,605735010774959 )
J Clin Monit Comput - Impaired cerebrovascular reactivity after acute traumatic brain injury can be detected by wavelet phase coherence analysis of the intracranial and arterial blood pressure signals. ( 0,605588037535081 )
Med Biol Eng Comput - A unified treatment of the reference estimation problem in depth EEG recordings. ( 0,605547432470555 )
Comput. Biol. Med. - Wavelet-based denoising method for real phonocardiography signal recorded by mobile devices in noisy environment. ( 0,6050643458795 )
J Clin Monit Comput - Morphological analysis of peripheral arterial signals in Takayasu's arteritis. ( 0,604686005828782 )
Comput. Biol. Med. - Wavelet adaptation for automatic voice disorders sorting. ( 0,601366058770477 )
J Clin Monit Comput - Can short-term heart rate variability be used to monitor fentanyl-midazolam induced changes in ANS preceding respiratory depression? ( 0,601315022563506 )
Comput Methods Programs Biomed - Noninvasive fetal ECG estimation using adaptive comb filter. ( 0,601232587804852 )
Comput Methods Programs Biomed - Power line interference filtering on surface electromyography based on the stationary wavelet packet transform. ( 0,601123884557267 )
Int J Neural Syst - Neural correlates of mathematical problem solving. ( 0,60102583916606 )
Comput Math Methods Med - Fetal ECG extraction from abdominal signals: a review on suppression of fundamental power line interference component and its harmonics. ( 0,60025730828143 )
Methods Inf Med - Automatic heart rate normalization for accurate energy expenditure estimation. An analysis of activities of daily living and heart rate features. ( 0,599783482506225 )
Comput Methods Programs Biomed - Texture analysis of poly-adenylated mRNA staining following global brain ischemia and reperfusion. ( 0,598927660617012 )
Med Biol Eng Comput - Denoising performance of modified dual-tree complex wavelet transform for processing quadrature embolic Doppler signals. ( 0,598512452651029 )
IEEE J Biomed Health Inform - EEG activity during movement planning encodes upcoming peak speed and acceleration and improves the accuracy in predicting hand kinematics. ( 0,598044252561256 )
Comput Math Methods Med - Analysis of visual appearance of retinal nerve fibers in high resolution fundus images: a study on normal subjects. ( 0,597883844320682 )
Comput. Biol. Med. - Computational method for high resolution spectral analysis of fractionated atrial electrograms. ( 0,597637009817785 )