Med Biol Eng Comput - Automatic video detection of body movement during sleep based on optical flow in pediatric patients with epilepsy.

Tópicos

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

Resumo

The aim of our work is to investigate whether the optical flow algorithm applied to video recordings can be used to detect movement during sleep in pediatric patients with epilepsy. The optical flow algorithm allocates intensities to pixels proportional to their involvement in movement of an object. The average of a percentage of the highest movement vectors was plotted as a function of time (R(t)). The used dataset contains video data acquired at the University Hospital of Leuven consisting of normal sleep movement and seizure movement. We investigated R(t), to make a distinction between movement and non-movement. We used the acquisition parameters (320 x 240 at 12.5 fps), derived from a previous study (Cuppens et al., Proceedings of the 4th European congress of the international federation for medical and biological engineering (MBEC 2008), ECIFBME 2008, Antwerp, Belgium, IFMBE Proceedings, vol 22, pp 784-789, 2008). Two experiments were concluded, one with global thresholds of R(t) in all datasets and one with a variable threshold in each dataset. The latter is obtained by inspecting a non-movement epoch and calculating the mean and standard deviations of R(t) over time. The variable threshold on R(t) was then obtained for each dataset by adding to the mean a fixed multiple of the standard deviation. Optimal thresholds were derived based on a three-fold cross-validation. The best result was achieved when using a variable threshold, which resulted in a sensitivity of one in all the test sets and a PPV of 1, 0.821, and 1, respectively, for the three test sets.

Resumo Limpo

aim work investig whether optic flow algorithm appli video record can use detect movement sleep pediatr patient epilepsi optic flow algorithm alloc intens pixel proport involv movement object averag percentag highest movement vector plot function time rt use dataset contain video data acquir univers hospit leuven consist normal sleep movement seizur movement investig rt make distinct movement nonmov use acquisit paramet x fps deriv previous studi cuppen et al proceed th european congress intern feder medic biolog engin mbec ecifbm antwerp belgium ifmb proceed vol pp two experi conclud one global threshold rt dataset one variabl threshold dataset latter obtain inspect nonmov epoch calcul mean standard deviat rt time variabl threshold rt obtain dataset ad mean fix multipl standard deviat optim threshold deriv base threefold crossvalid best result achiev use variabl threshold result sensit one test set ppv respect three test set

Resumos Similares

Comput Math Methods Med - Investigation of attenuation correction for small-animal single photon emission computed tomography. ( 0,729601530696983 )
Comput Methods Programs Biomed - Estimation algorithm of the bowel motility based on regression analysis of the jitter and shimmer of bowel sounds. ( 0,687795600693785 )
IEEE J Biomed Health Inform - A bicluster-based Bayesian principal component analysis method for microarray missing value estimation. ( 0,68525938502329 )
Comput. Biol. Med. - Real time estimation of generation, extinction and flow of muscle fibre action potentials in high density surface EMG. ( 0,679337290049701 )
Int J Comput Assist Radiol Surg - Needle deflection estimation: prostate brachytherapy phantom experiments. ( 0,67873182839132 )
Int J Comput Assist Radiol Surg - A low-cost tracked C-arm (TC-arm) upgrade system for versatile quantitative intraoperative imaging. ( 0,660771665211883 )
Int J Comput Assist Radiol Surg - Improved human observer performance in digital reconstructed radiograph verification in head and neck cancer radiotherapy. ( 0,65562818784231 )
IEEE Trans Image Process - Efficient registration of nonrigid 3-D bodies. ( 0,655043229606307 )
J. Comput. Biol. - Maximal acyclic agreement forests. ( 0,648463038912971 )
IEEE Trans Image Process - Efficient minimum error bounded particle resampling L1 tracker with occlusion detection. ( 0,648020089249838 )
Telemed J E Health - A new chest compression depth feedback algorithm for high-quality CPR based on smartphone. ( 0,64533986073934 )
Comput Methods Programs Biomed - Novel mathematical algorithm for pupillometric data analysis. ( 0,643859581582632 )
J Clin Monit Comput - Evaluation of a computer program for non-invasive determination of pulmonary shunt and ventilation-perfusion mismatch. ( 0,642418512113622 )
IEEE Trans Image Process - Scale-aware saliency for application to frame rate upconversion. ( 0,642279939003482 )
Int J Comput Assist Radiol Surg - Mesh-based method for measuring intracranial volume in patients with craniosynostosis. ( 0,637519836190373 )
J. Med. Internet Res. - Biological calibration for web-based hearing tests: evaluation of the methods. ( 0,626487263223456 )
Int J Comput Assist Radiol Surg - Optimal setting of image bounding box can improve registration accuracy of diffusion tensor tractography. ( 0,623669549770017 )
Comput. Biol. Med. - Real time identification of active regions in muscles from high density surface electromyogram. ( 0,622723392939813 )
Int J Comput Assist Radiol Surg - Wireless mobile technology to improve workflow and feasibility of MR-guided percutaneous interventions. ( 0,622616352680538 )
J. Comput. Biol. - Threshold group testing on inhibitor model. ( 0,610230710844571 )
IEEE Trans Pattern Anal Mach Intell - Robust Text Detection in Natural Scene Images. ( 0,608311068915623 )
Comput. Biol. Med. - An effective measure for assessing the quality of biclusters. ( 0,607892694228836 )
Int J Comput Assist Radiol Surg - A morphological study of anatomical plates for acetabular posterior column. ( 0,607667096824379 )
Comput Methods Programs Biomed - Adaptive network based on fuzzy inference system for equilibrated urea concentration prediction. ( 0,607520820903368 )
Comput. Biol. Med. - Preoperative implant selection for two stage breast reconstruction with 3D imaging. ( 0,605643910199264 )
Int J Comput Assist Radiol Surg - Intraoperative detection and localization of cylindrical implants in cone-beam CT image data. ( 0,603552726847181 )
Comput. Biol. Med. - Missing value imputation in DNA microarrays based on conjugate gradient method. ( 0,599151602842888 )
Med Biol Eng Comput - Predicting 3D pose in partially overlapped X-ray images of knee prostheses using model-based Roentgen stereophotogrammetric analysis (RSA). ( 0,599105774890916 )
IEEE J Biomed Health Inform - Estimating energy expenditure using body-worn accelerometers: a comparison of methods, sensors number and positioning. ( 0,592796472372818 )
Comput Biol Chem - A novel k-word relative measure for sequence comparison. ( 0,589767824619589 )
Med Biol Eng Comput - Efficient and robust estimation of blood oxygenation levels in single cerebral veins. ( 0,58926763979157 )
Methods Inf Med - Individual Thresholding of Voxel-based Functional Connectivity Maps. Estimation of Random Errors by Means of Surrogate Time Series. ( 0,588114081212352 )
Comput Math Methods Med - Long-term prediction of emergency department revenue and visitor volume using autoregressive integrated moving average model. ( 0,583422192408946 )
Med Biol Eng Comput - A robust method for online heart sound localization in respiratory sound based on temporal fuzzy c-means. ( 0,582675623511499 )
J Clin Monit Comput - Effect of propofol and remifentanil on a somatosensory evoked potential indicator of pain perception intensity in volunteers. ( 0,580472358147892 )
J Clin Monit Comput - Reliable real-time calculation of heart-rate complexity in critically ill patients using multiple noisy waveform sources. ( 0,579831932773109 )
IEEE Trans Image Process - t-Tests, F-tests and Otsu's methods for image thresholding. ( 0,578945581672864 )
Med Biol Eng Comput - Inertial sensors in estimating walking speed and inclination: an evaluation of sensor error models. ( 0,577471564034118 )
IEEE Trans Image Process - Sub-hexagonal phase correlation for motion estimation. ( 0,574144015218282 )
Int J Comput Assist Radiol Surg - Optimized order estimation for autoregressive models to predict respiratory motion. ( 0,572946145593352 )
Int J Comput Assist Radiol Surg - Three-dimensional prediction of free-flap volume in autologous breast reconstruction by CT angiography imaging. ( 0,571490370874102 )
Med Biol Eng Comput - Intra-protocol repeatability and inter-protocol agreement for the analysis of scapulo-humeral coordination. ( 0,569769849289536 )
IEEE J Biomed Health Inform - Accelerometry-based berg balance scale score estimation. ( 0,569047619047619 )
J Clin Monit Comput - Non-invasive measurement of cardiac output in obese children and adolescents: comparison of electrical cardiometry and transthoracic Doppler echocardiography. ( 0,568668310254444 )
Int J Comput Assist Radiol Surg - Multi-modality morphological correlation of axillary lymph nodes. ( 0,567908068147727 )
Comput Methods Programs Biomed - HELOW: a program for testing extreme homogeneity in meta-analysis. ( 0,566707185627876 )
IEEE Trans Pattern Anal Mach Intell - Monotonicity and Error Type Differentiability in Performance Measures for Target Detection and Tracking in Video. ( 0,566095832460455 )
IEEE J Biomed Health Inform - Robust automatic measurement of 3D scanned models for the human body fat estimation. ( 0,564432521030158 )
Med Decis Making - Estimating health state utility values for joint health conditions: a conceptual review and critique of the current evidence. ( 0,562993232388163 )
Comput Methods Programs Biomed - Bayesian sample-size determination for two independent Poisson rates. ( 0,56031746031746 )
J. Med. Internet Res. - Self-test web-based pure-tone audiometry: validity evaluation and measurement error analysis. ( 0,557528131568035 )
J Biomed Inform - Clustering clinical trials with similar eligibility criteria features. ( 0,55714438165989 )
J Clin Monit Comput - Investigation of photoplethysmographic signals and blood oxygen saturation values obtained from human splanchnic organs using a fiber optic sensor. ( 0,55455210219119 )
IEEE Trans Pattern Anal Mach Intell - Tracking-Learning-Detection. ( 0,553632772059058 )
Comput. Biol. Med. - Fully automated computer-aided volume estimation system for thyroid planar scintigraphy. ( 0,551510913551736 )
Methods Inf Med - Analysis of Fluorescence Lifetime Imaging Microscopy (FLIM) data. Based on a fully automated Laguerre deconvolution method. ( 0,549926681330075 )
Comput. Biol. Med. - The identification of the relationship between chemical and electrical parameters of honeys using artificial neural networks. ( 0,546420790483039 )
J Clin Monit Comput - Effect of concurrent oxygen therapy on accuracy of forecasting imminent postoperative desaturation. ( 0,54354606015204 )
J Clin Monit Comput - Capability of a neck worn device to measure sleep/wake, airway position, and differentiate benign snoring from obstructive sleep apnea. ( 0,543269618229463 )
BMC Med Inform Decis Mak - Estimating the re-identification risk of clinical data sets. ( 0,542791266558781 )
Neural Comput - Energy complexity of recurrent neural networks. ( 0,541945597971387 )
Neural Comput - Density-difference estimation. ( 0,541749077979892 )
IEEE Trans Image Process - Feature adaptive co-segmentation by complexity awareness. ( 0,540834898813486 )
Med Biol Eng Comput - A multi-electrode array and inversion technique for retrieving six conductivities from heart potential measurements. ( 0,540826191043866 )
Comput Methods Programs Biomed - Appraisal of adaptive neuro-fuzzy computing technique for estimating anti-obesity properties of a medicinal plant. ( 0,540652538772461 )
J Chem Inf Model - Conformational preferences of modified uridines: comparison of AMBER derived force fields. ( 0,539743639096418 )
J. Comput. Biol. - iGLASS: an improvement to the GLASS method for estimating species trees from gene trees. ( 0,538436518662132 )
Comput Methods Programs Biomed - A passive movement method for parameter estimation of a musculo-skeletal arm model incorporating a modified hill muscle model. ( 0,537998377483052 )
Comput. Biol. Med. - A straightforward approach to computer-aided polyp detection using a polyp-specific volumetric feature in CT colonography. ( 0,534224450635342 )
Comput Methods Programs Biomed - Use of graph theory measures to identify errors in record linkage. ( 0,533053817455206 )
J Clin Monit Comput - Evaluation of techniques for estimating the power spectral density of RR-intervals under paced respiration conditions. ( 0,531769984779918 )
Comput Methods Programs Biomed - Estimation of the elastic parameters of human liver biomechanical models by means of medical images and evolutionary computation. ( 0,529947937593026 )
Lifetime Data Anal - On collapsibility and confounding bias in Cox and Aalen regression models. ( 0,528925235512454 )
Med Biol Eng Comput - Quantitative evaluation of upper-limb motor control in robot-aided rehabilitation. ( 0,527787444252273 )
Comput Math Methods Med - The failure of R0. ( 0,527726910922304 )
Comput. Biol. Med. - Inter- and intra-observer variability analysis of completely automated cIMT measurement software (AtheroEdge?) and its benchmarking against commercial ultrasound scanner and expert Readers. ( 0,527718718315478 )
Comput Math Methods Med - Path-counting formulas for generalized kinship coefficients and condensed identity coefficients. ( 0,525544148331133 )
Int J Neural Syst - Multi-instance dictionary learning for detecting abnormal events in surveillance videos. ( 0,522735041603591 )
J Clin Monit Comput - Non-invasive cardiac output evaluation in postoperative cardiac surgery patients, using a new prolonged expiration-based technique. ( 0,521114418336343 )
IEEE Trans Image Process - Noise reduction of cDNA microarray images using complex wavelets. ( 0,520920548216446 )
Comput Math Methods Med - Prediction of breeding values for dairy cattle using artificial neural networks and neuro-fuzzy systems. ( 0,52091753611094 )
Med Biol Eng Comput - Estimation of impulse response between electromyogram signals for use in conduction delay distribution estimation. ( 0,520719175164266 )
Med Biol Eng Comput - Sensory data fusion of pressure mattress and wireless inertial magnetic measurement units. ( 0,518919012511441 )
IEEE Trans Neural Netw Learn Syst - The Connection Between Bayesian Estimation of a Gaussian Random Field and RKHS. ( 0,517112234714225 )
Med Biol Eng Comput - Patient-specific generation of the Purkinje network driven by clinical measurements of a normal propagation. ( 0,517036490659283 )
IEEE Trans Image Process - Real-time affine global motion estimation using phase correlation and its application for digital image stabilization. ( 0,516694292575496 )
Res Synth Methods - Robust variance estimation in meta-regression with binary dependent effects. ( 0,514893139666411 )
IEEE Trans Image Process - Robust soft-decision interpolation using weighted least squares. ( 0,514791561670229 )
Comput Methods Programs Biomed - Measurement error in statistical models of shape. ( 0,514302850859451 )
Int J Comput Assist Radiol Surg - An error analysis perspective for patient alignment systems. ( 0,51227571863098 )
Comput. Biol. Med. - Differential operator in seizure detection. ( 0,510646204092212 )
Int J Comput Assist Radiol Surg - A laboratory comparison of computer navigation and individualized guides for distal radius osteotomy. ( 0,510286524461884 )
Int J Med Robot - Intraoperative measurement of femoral antetorsion using the anterior cortical angle method: a novel use for smartphones. ( 0,508560146676945 )
Int J Comput Assist Radiol Surg - A pilot study on magnetic navigation for transcatheter aortic valve implantation using dynamic aortic model and US image guidance. ( 0,508092300708077 )
Med Biol Eng Comput - Evaluation of multi-exponential curve fitting analysis of oxygen-quenched phosphorescence decay traces for recovering microvascular oxygen tension histograms. ( 0,506426178285914 )
Int J Comput Assist Radiol Surg - Boundary estimation of fiber bundles derived from diffusion tensor images. ( 0,505734523920321 )
Med Biol Eng Comput - Detection of occult paroxysmal atrial fibrillation. ( 0,505484839270278 )
J Biomed Inform - Recovery at the edge of error: debunking the myth of the infallible expert. ( 0,505173392990834 )
J Clin Monit Comput - Improved spatial resolution and electrogram wave direction independence with the use of an orthogonal electrode configuration. ( 0,505145656152256 )
Med Decis Making - An efficient method for computing single-parameter partial expected value of perfect information. ( 0,504090231936416 )