Med Biol Eng Comput - Phonographic signal with a fractional-order chaotic system: a novel and simple algorithm for analyzing residual arteriovenous access stenosis.


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


To detect the early developmental stages of arteriovenous access (AVA) stenosis in hemodialysis patients, this study explored a stenosis detector based on the Burg method and the fractional-order chaos system (FOCS). The bruit developed by the blood flowing through AVA can be a viable noninvasive strategy for monitoring AVA functions. We used the Burg method of the autoregressive model to estimate the frequency spectra of phonographic signals recorded by an electronic stethoscope in patients' AVAs and to identify the spectral peaks in the region of 25-800 Hz. The frequency spectra differed significantly between normal and stenosis statuses in AVA. We found that the frequency and amplitude in power spectra analysis varied in accordance with the severity of AVA stenosis. However, the correlation of these parameters for classifying the degree of stenosis is limited when only using the Burg method. Therefore, we used an FOCS to monitor the differing frequency spectra between the normal condition and AVA stenosis. The variances of these two conditions were dynamic errors that were the coupling variables that tracked the responses between the master system and the slave system. A total of 42 patients who had received percutaneous transluminal angioplasty (PTA) for their failing AVAs was recruited for this study. In this study, the dynamic error, Index , was used to calculate the frequency spectrum redistribution in patients undergoing PTA. In addition, Imp was the index used to evaluate improvements in the luminal diameter between pre- and post-PTA. Therefore, we used linear regression to model the relationship between Imp and Index . The findings indicate that the proposed method has enhanced efficiency, especially in the venous anastomosis (V-site). The FOCS is a novel and simple algorithm for analyzing the residual AVA stenosis of PTA treatment.

Resumo Limpo

detect earli development stage arterioven access ava stenosi hemodialysi patient studi explor stenosi detector base burg method fractionalord chao system foc bruit develop blood flow ava can viabl noninvas strategi monitor ava function use burg method autoregress model estim frequenc spectra phonograph signal record electron stethoscop patient ava identifi spectral peak region hz frequenc spectra differ signific normal stenosi status ava found frequenc amplitud power spectra analysi vari accord sever ava stenosi howev correl paramet classifi degre stenosi limit use burg method therefor use foc monitor differ frequenc spectra normal condit ava stenosi varianc two condit dynam error coupl variabl track respons master system slave system total patient receiv percutan translumin angioplasti pta fail ava recruit studi studi dynam error index use calcul frequenc spectrum redistribut patient undergo pta addit imp index use evalu improv lumin diamet pre postpta therefor use linear regress model relationship imp index find indic propos method enhanc effici especi venous anastomosi vsite foc novel simpl algorithm analyz residu ava stenosi pta treatment

Resumos Similares

J Clin Monit Comput - Non-stationarity of EEG during wakefulness and anaesthesia: advantages of EEG permutation entropy monitoring. ( 0,767157010058643 )
Comput Math Methods Med - Analysis of visual appearance of retinal nerve fibers in high resolution fundus images: a study on normal subjects. ( 0,741578234936916 )
Comput. Biol. Med. - A novel electrocardiogram parameterization algorithm and its application in myocardial infarction detection. ( 0,714627840104961 )
Comput Methods Programs Biomed - Increasing sensitivity in the measurement of heart rate variability: the method of non-stationary RR time-frequency analysis. ( 0,706120164641713 )
J Med Syst - Identification of deep sleep and awake with computational EEG measures. ( 0,705410028042273 )
Comput Math Methods Med - Transfer function analysis of respiratory and cardiac pulsations in human brain observed on dynamic magnetic resonance images. ( 0,701761489188302 )
Comput. Biol. Med. - Spectral analysis of heart rate variability with the autoregressive method: what model order to choose? ( 0,698973300728175 )
Comput Methods Programs Biomed - Linear and nonlinear analysis of normal and CAD-affected heart rate signals. ( 0,684805603355179 )
Comput Math Methods Med - Automatic identification of motion artifacts in EHG recording for robust analysis of uterine contractions. ( 0,680807667303835 )
J Clin Monit Comput - An autocalibrating algorithm for non-invasive cardiac output determination based on the analysis of an arterial pressure waveform recorded with radial artery applanation tonometry: a proof of concept pilot analysis. ( 0,67888680732043 )
Artif Intell Med - Automatic sleep scoring: a search for an optimal combination of measures. ( 0,674132216488912 )
Methods Inf Med - Linear and nonlinear analysis of base lung sound in extrinsic allergic alveolitis patients in comparison to healthy subjects. ( 0,673231251479632 )
Int J Comput Assist Radiol Surg - Automated palpation for breast tissue discrimination based on viscoelastic biomechanical properties. ( 0,673023140861132 )
Comput Math Methods Med - A wavelet transform based method to determine depth of anesthesia to prevent awareness during general anesthesia. ( 0,672929487701988 )
Comput Methods Programs Biomed - Feature extraction of the first difference of EMG time series for EMG pattern recognition. ( 0,672020788591028 )
J Clin Monit Comput - The effect of skin incision on the electroencephalogram during general anesthesia maintained with propofol or desflurane. ( 0,663569042807398 )
Comput Methods Programs Biomed - Optimal channel selection for analysis of EEG-sleep patterns of neonates. ( 0,660832238262629 )
J Med Syst - The effect of multiscale PCA de-noising in epileptic seizure detection. ( 0,660078760429249 )
Comput Methods Programs Biomed - Texture analysis of poly-adenylated mRNA staining following global brain ischemia and reperfusion. ( 0,654990157937696 )
J Clin Monit Comput - Morphological analysis of peripheral arterial signals in Takayasu's arteritis. ( 0,653724286133547 )
J Med Syst - Classification of arrhythmia using hybrid networks. ( 0,648740161356797 )
J Med Syst - A pilot study on image analysis techniques for extracting early uterine cervix cancer cell features. ( 0,647261431874831 )
Comput. Biol. Med. - The dominant morphology of fractionated atrial electrograms has greater temporal stability in persistent as compared with paroxysmal atrial fibrillation. ( 0,646558908996137 )
Neural Comput - Delay differential analysis of electroencephalographic data. ( 0,645944171333598 )
J Telemed Telecare - ECG telemonitoring during home-based cardiac rehabilitation in heart failure patients. ( 0,643991640742309 )
IEEE J Biomed Health Inform - Single Trial Visual Evoked Potential Extraction using Partial Least Squares-based Approach. ( 0,643950887275808 )
Comput Math Methods Med - Higher-order spectrum in understanding nonlinearity in EEG rhythms. ( 0,643691686823502 )
Med Biol Eng Comput - A method for continuously assessing the autonomic response to music-induced emotions through HRV analysis. ( 0,643576987150735 )
Comput Methods Programs Biomed - Automatic moment segmentation and peak detection analysis of heart sound pattern via short-time modified Hilbert transform. ( 0,642090597205394 )
Med Biol Eng Comput - Heart rate variability and nonlinear dynamic analysis in patients with stress-induced cardiomyopathy. ( 0,64126281087069 )
J Med Syst - Variable threshold method for ECG R-peak detection. ( 0,640739922894147 )
Med Biol Eng Comput - The application of Hilbert-Huang transform in the analysis of muscle fatigue during cyclic dynamic contractions. ( 0,639849237243157 )
Comput. Biol. Med. - Current methods in electrocardiogram characterization. ( 0,63790727305404 )
Comput. Biol. Med. - Alcoholism-related alterations in spectrum, coherence, and phase synchrony of topical electroencephalogram. ( 0,637837584203707 )
Comput Methods Programs Biomed - Automatic heart sound detection in pediatric patients without electrocardiogram reference via pseudo-affine Wigner-Ville distribution and Haar wavelet lifting. ( 0,636056789664573 )
J Clin Monit Comput - Intraoperative MRI electrical noise and monitor ECG filters affect arrhythmia detection and identification. ( 0,635509981168469 )
Med Biol Eng Comput - Directional dual-tree complex wavelet packet transforms for processing quadrature signals. ( 0,634719412058046 )
Artif Intell Med - Comparative study of approximate entropy and sample entropy robustness to spikes. ( 0,633358267306799 )
Comput Methods Programs Biomed - Multifractal characterisation of electrocardiographic RR and QT time-series before and after progressive exercise. ( 0,633212847470175 )
J Med Syst - Analysis of spike waves in epilepsy using Hilbert-Huang transform. ( 0,630935958656847 )
Comput. Biol. Med. - Atrial activity selection for atrial fibrillation ECG recordings. ( 0,630505187581072 )
Comput Methods Programs Biomed - QRS detection based on wavelet coefficients. ( 0,630328035895454 )
Comput Methods Programs Biomed - Epileptic seizure classification in EEG signals using second-order difference plot of intrinsic mode functions. ( 0,629953398099568 )
Methods Inf Med - Linear and fractal heart rate dynamics during sleep at high altitude. Investigation with textile technology. ( 0,628194055696445 )
Comput. Biol. Med. - Binary symbolic dynamics classifies heart rate variability patterns linked to autonomic modulations. ( 0,627875991193771 )
IEEE J Biomed Health Inform - Sleep and wake classification with actigraphy and respiratory effort using dynamic warping. ( 0,626426695583218 )
Comput Methods Programs Biomed - Averaging in vitro cardiac field potential recordings obtained with microelectrode arrays. ( 0,625893352542919 )
J Clin Monit Comput - Power spectral analysis of plethysmographic pulse waveform in pregnant women. ( 0,625893352542919 )
J Clin Monit Comput - Multi-scale sample entropy of electroencephalography during sevoflurane anesthesia. ( 0,62569387743239 )
Comput Methods Programs Biomed - A new algorithm for quadratic sample entropy optimization for very short biomedical signals: application to blood pressure records. ( 0,625490665271906 )
IEEE J Biomed Health Inform - Epsilon-tube filtering: reduction of high-amplitude motion artifacts from impedance plethysmography signal. ( 0,625420717254089 )
Comput. Biol. Med. - Non-uniform multivariate embedding to assess the information transfer in cardiovascular and cardiorespiratory variability series. ( 0,625094134728374 )
Methods Inf Med - Prediction of countershock success in patients using the autoregressive spectral estimation. ( 0,624864827837184 )
Int J Neural Syst - Application of empirical mode decomposition (emd) for automated detection of epilepsy using EEG signals. ( 0,624227964998773 )
J Clin Monit Comput - A quantitative EEG method for detecting post clamp changes during carotid endarterectomy. ( 0,624194548966156 )
Telemed J E Health - Reliability and validity of gait analysis by android-based smartphone. ( 0,623868909117282 )
J Med Syst - Determining the appropriate amount of anesthetic gas using DWT and EMD combined with neural network. ( 0,623583052314461 )
J Med Syst - Design and development of a heart rate variability analyzer. ( 0,620282225264351 )
Comput. Biol. Med. - Analysis of heart rate variability using fuzzy measure entropy. ( 0,620213228622515 )
Methods Inf Med - Long-term correlations and complexity analysis of the heart rate variability signal during sleep. Comparing normal and pathologic subjects. ( 0,620135012203 )
IEEE J Biomed Health Inform - Analysis of the Chaotic Characteristics of Human Colonic Activities and Comparison of Healthy Participants to Costive Subjects. ( 0,619714753901617 )
Comput Math Methods Med - Multiscale cross-approximate entropy analysis as a measurement of complexity between ECG R-R interval and PPG pulse amplitude series among the normal and diabetic subjects. ( 0,619609147439689 )
J Clin Monit Comput - Respiratory change in ECG-wave amplitude is a reliable parameter to estimate intravascular volume status. ( 0,616372333129528 )
Med Biol Eng Comput - Stability and distribution of steady-state somatosensory evoked potentials elicited by vibro-tactile stimulation. ( 0,616250553791227 )
J Clin Monit Comput - Parameter selection in permutation entropy for an electroencephalographic measure of isoflurane anesthetic drug effect. ( 0,61586546989583 )
J Clin Monit Comput - Comparison of spectral entropy and BIS VISTA? monitor during general anesthesia for cardiac surgery. ( 0,615149534888476 )
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. ( 0,614956043160213 )
Int J Neural Syst - Detection of driving fatigue by using noncontact EMG and ECG signals measurement system. ( 0,612988069619572 )
IEEE J Biomed Health Inform - A low-complexity ECG feature extraction algorithm for mobile healthcare applications. ( 0,612831505458797 )
Med Biol Eng Comput - Remote sensing of patterns of cardiac activity on an ambulatory subject using millimeter-wave interferometry and statistical methods. ( 0,612438663180517 )
Comput Methods Programs Biomed - Automated sleep stage identification system based on time-frequency analysis of a single EEG channel and random forest classifier. ( 0,611721655227449 )
Med Biol Eng Comput - Denoising and compression of intracortical signals with a modified MDL criterion. ( 0,611509028283085 )
Comput Methods Programs Biomed - An R-peak detection method that uses an SVD filter and a search back system. ( 0,611492220757176 )
J Med Syst - A novel handheld device for use in remote patient monitoring of heart failure patients--design and preliminary validation on healthy subjects. ( 0,611194289399453 )
Comput. Biol. Med. - Mitigating the effect of non-stationarity in spectral analysis-an application to neonate heart rate analysis. ( 0,607079933756901 )
Comput Methods Programs Biomed - QRS detection using S-Transform and Shannon energy. ( 0,60676745302244 )
IEEE J Biomed Health Inform - Compressed sensing technology-based spectral estimation of heart rate variability using the integral pulse frequency modulation model. ( 0,606531669064546 )
Comput Methods Programs Biomed - Increased variation of the response index of nociception during noxious stimulation in patients during general anaesthesia. ( 0,606256448196402 )
Comput. Biol. Med. - Estimating cognitive workload using wavelet entropy-based features during an arithmetic task. ( 0,604859655093397 )
Comput Methods Programs Biomed - Assessment of time-frequency representation techniques for thoracic sounds analysis. ( 0,604815564229875 )
IEEE J Biomed Health Inform - EEG activity during movement planning encodes upcoming peak speed and acceleration and improves the accuracy in predicting hand kinematics. ( 0,60456373776562 )
Int J Neural Syst - Phase synchronization of neuronal noise in mouse hippocampal epileptiform dynamics. ( 0,604531786669337 )
Comput Methods Programs Biomed - Broadband noise suppression and feature identification of ECG waveforms using mathematical morphology and embedding theorem. ( 0,602801662737534 )
Int J Neural Syst - Phase synchronization in brain networks derived from correlation between probabilities of recurrences in functional MRI data. ( 0,602641037439217 )
Med Biol Eng Comput - Dynamic cerebral autoregulation: different signal processing methods without influence on results and reproducibility. ( 0,601635893887397 )
Comput Methods Programs Biomed - A novel method for concentration evaluation of reading behaviors with electrical activity recorded on the scalp. ( 0,601421270118203 )
Int J Neural Syst - Localization of epileptic foci using multimodality neuroimaging. ( 0,600718199235054 )
Med Biol Eng Comput - The effect of precordial lead displacement on ECG morphology. ( 0,597991462646497 )
Methods Inf Med - Classification of sleep stages using multi-wavelet time frequency entropy and LDA. ( 0,597899394754643 )
Med Biol Eng Comput - Spontaneous contractions of isolated rat portal vein under temperature perturbations. ( 0,597508994360441 )
J Biomed Inform - A general framework for time series data mining based on event analysis: application to the medical domains of electroencephalography and stabilometry. ( 0,59727294302024 )
IEEE Trans Image Process - A perceptually tuned watermarking scheme for color images. ( 0,597218190415688 )
Comput Math Methods Med - A harmonic linear dynamical system for prominent ECG feature extraction. ( 0,597040966721484 )
Comput Methods Programs Biomed - Power line interference filtering on surface electromyography based on the stationary wavelet packet transform. ( 0,596764490770691 )
Comput Math Methods Med - A novel automatic detection system for ECG arrhythmias using maximum margin clustering with immune evolutionary algorithm. ( 0,596685088523503 )
Med Biol Eng Comput - Evaluation of a morphological filter in mean cardiac output determination: application to left ventricular assist devices. ( 0,596199781801972 )
Comput. Biol. Med. - Noise/spike detection in phonocardiogram signal as a cyclic random process with non-stationary period interval. ( 0,59605347213372 )
Comput. Biol. Med. - A fixed point algorithm for extracting the atrial activity in the frequency domain. ( 0,595923068222114 )
J Med Syst - Analysis of breast thermograms using Gabor wavelet anisotropy index. ( 0,594393561698106 )
Comput. Biol. Med. - Real-time CHF detection from ECG signals using a novel discretization method. ( 0,594350574072263 )