Comput Methods Programs Biomed - Utility of a novel error-stepping method to improve gradient-based parameter identification by increasing the smoothness of the local objective surface: a case-study of pulmonary mechanics.

Tópicos

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

Resumo

Accurate model parameter identification relies on accurate forward model simulations to guide convergence. However, some forward simulation methodologies lack the precision required to properly define the local objective surface and can cause failed parameter identification. The role of objective surface smoothness in identification of a pulmonary mechanics model was assessed using forward simulation from a novel error-stepping method and a proprietary Runge-Kutta method. The objective surfaces were compared via the identified parameter discrepancy generated in a Monte Carlo simulation and the local smoothness of the objective surfaces they generate. The error-stepping method generated significantly smoother error surfaces in each of the cases tested (p<0.0001) and more accurate model parameter estimates than the Runge-Kutta method in three of the four cases tested (p<0.0001) despite a 75% reduction in computational cost. Of note, parameter discrepancy in most cases was limited to a particular oblique plane, indicating a non-intuitive multi-parameter trade-off was occurring. The error-stepping method consistently improved or equalled the outcomes of the Runge-Kutta time-integration method for forward simulations of the pulmonary mechanics model. This study indicates that accurate parameter identification relies on accurate definition of the local objective function, and that parameter trade-off can occur on oblique planes resulting prematurely halted parameter convergence.

Resumo Limpo

accur model paramet identif reli accur forward model simul guid converg howev forward simul methodolog lack precis requir proper defin local object surfac can caus fail paramet identif role object surfac smooth identif pulmonari mechan model assess use forward simul novel errorstep method proprietari rungekutta method object surfac compar via identifi paramet discrep generat mont carlo simul local smooth object surfac generat errorstep method generat signific smoother error surfac case test p accur model paramet estim rungekutta method three four case test p despit reduct comput cost note paramet discrep case limit particular obliqu plane indic nonintuit multiparamet tradeoff occur errorstep method consist improv equal outcom rungekutta timeintegr method forward simul pulmonari mechan model studi indic accur paramet identif reli accur definit local object function paramet tradeoff can occur obliqu plane result prematur halt paramet converg

Resumos Similares

Med Biol Eng Comput - Computation of a finite element-conformal tetrahedral mesh approximation for simulated soft tissue deformation using a deformable surface model. ( 0,746470323918357 )
Comput Math Methods Med - Hybrid mesh for nasal airflow studies. ( 0,728707017418325 )
Comput. Biol. Med. - Analytical cone-beam SPECT reconstruction algorithm with non-uniform attenuation for general non-circular orbit. ( 0,700149310875996 )
IEEE Trans Image Process - DART: a practical reconstruction algorithm for discrete tomography. ( 0,684411728689203 )
IEEE Trans Image Process - Parametric polytope reconstruction, an application to crystal shape estimation. ( 0,674962661574859 )
Int J Comput Assist Radiol Surg - Three-dimensional prediction of free-flap volume in autologous breast reconstruction by CT angiography imaging. ( 0,674520200166985 )
Comput Math Methods Med - Solid dynamic models for analysis of stress and strain in human hearts. ( 0,665036066312444 )
IEEE Trans Vis Comput Graph - Poisson Coordinates. ( 0,660355314022629 )
IEEE Trans Image Process - Efficient reconstruction of dielectric objects based on integral equation approach with Gauss-Newton minimization. ( 0,658536231460363 )
J Chem Inf Model - Development of surface-SFED models for polar solvents. ( 0,658029796594277 )
Comput Methods Programs Biomed - Comparison of algorithms for out-of-plane artifacts removal in digital tomosynthesis reconstructions. ( 0,647567014728215 )
IEEE Trans Image Process - Missing intensity interpolation using a kernel PCA-based POCS algorithm and its applications. ( 0,637597468519657 )
IEEE Trans Pattern Anal Mach Intell - Flat Refractive Geometry. ( 0,63347312671821 )
IEEE Trans Vis Comput Graph - A Curvature-Adaptive Implicit Surface Reconstruction for Irregularly Spaced Points. ( 0,633234680512129 )
IEEE Trans Vis Comput Graph - The Sinogram Polygonizer for Reconstructing 3D Shapes. ( 0,625458608424133 )
Med Biol Eng Comput - Three-dimensional reconstruction of cranial defect using active contour model and image registration. ( 0,619861844924797 )
Comput. Biol. Med. - Experimental validation of 3D printed patient-specific implants using digital image correlation and finite element analysis. ( 0,617083276196728 )
J Biomed Inform - Foldover-free shape deformation for biomedicine. ( 0,615784787357766 )
IEEE Trans Image Process - Piecewise approximation of contours through scale-space selection of dominant points. ( 0,612412307586692 )
IEEE Trans Vis Comput Graph - Approximation of Loop Subdivision Surfaces for Fast Rendering. ( 0,612363159989447 )
Comput. Biol. Med. - Preoperative implant selection for two stage breast reconstruction with 3D imaging. ( 0,6107150692974 )
Neural Comput - Density-difference estimation. ( 0,608778084862566 )
IEEE Trans Vis Comput Graph - Interactive Visualization of Rotational Symmetry Fields on Surfaces. ( 0,606483797789906 )
Comput Methods Programs Biomed - Fast ray-tracing of human eye optics on Graphics Processing Units. ( 0,605374345811414 )
Comput Math Methods Med - Low-dose and scatter-free cone-beam CT imaging using a stationary beam blocker in a single scan: phantom studies. ( 0,604563321315808 )
Comput Methods Programs Biomed - Measurement error in statistical models of shape. ( 0,601301859838907 )
IEEE Trans Image Process - Geometrically induced force interaction for three-dimensional deformable models. ( 0,599830091132669 )
Int J Med Robot - The effect of proximal tibial corrective osteotomy on menisci, tibia and tarsal bones: a finite element model study of tibia vara. ( 0,599011518411269 )
Comput. Aided Surg. - Mean-shifted surface curvature algorithm for automatic bone shape segmentation in orthopedic surgery planning: a sensitivity analysis. ( 0,596180254159031 )
IEEE Trans Image Process - Skew estimation of document images using bagging. ( 0,595345348541409 )
Comput. Biol. Med. - Volume conductor models in surface electromyography: computational techniques. ( 0,593729709772041 )
IEEE Trans Image Process - 3-D modeling from a single view of a symmetric object. ( 0,593698151517929 )
Comput Biol Chem - An efficient nonlinear finite-difference approach in the computational modeling of the dynamics of a nonlinear diffusion-reaction equation in microbial ecology. ( 0,593623548413031 )
Comput Methods Programs Biomed - Constitutive modeling of the non-linear visco-elasticity of the periodontal ligament. ( 0,593440609614687 )
J Biomed Inform - Using genetic algorithm in reconstructing single individual haplotype with minimum error correction. ( 0,593181880633374 )
IEEE Trans Pattern Anal Mach Intell - Dynamic Refraction Stereo. ( 0,592107266641726 )
IEEE Trans Image Process - Accelerating x-ray data collection using pyramid beam ray casting geometries. ( 0,591823876144982 )
Comput Math Methods Med - A CT Reconstruction Algorithm Based on L1/2 Regularization. ( 0,591763921479045 )
Med Biol Eng Comput - Fast 3D reconstruction of the rib cage from biplanar radiographs. ( 0,591106039157014 )
IEEE Trans Neural Netw Learn Syst - Discrete-Time Zhang Neural Network for Online Time-Varying Nonlinear Optimization With Application to Manipulator Motion Generation. ( 0,588910645871866 )
IEEE Trans Vis Comput Graph - Surface Meshing with Curvature Convergence. ( 0,587759418984479 )
Comput Math Methods Med - Piecewise-constant-model-based interior tomography applied to dentin tubules. ( 0,586268570631863 )
Methods Inf Med - Individual Thresholding of Voxel-based Functional Connectivity Maps. Estimation of Random Errors by Means of Surrogate Time Series. ( 0,585983123138757 )
Comput Methods Programs Biomed - Estimation of the elastic parameters of human liver biomechanical models by means of medical images and evolutionary computation. ( 0,580586709960573 )
Comput Methods Programs Biomed - Numerical and experimental analysis of factors leading to suture dehiscence after Billroth II gastric resection. ( 0,57884123053568 )
Med Biol Eng Comput - High-quality conforming hexahedral meshes of patient-specific abdominal aortic aneurysms including their intraluminal thrombi. ( 0,57721085605879 )
Comput Methods Programs Biomed - Parametric-based brain Magnetic Resonance Elastography using a Rayleigh damping material model. ( 0,575681671603354 )
Comput. Aided Surg. - Computer simulation of thromboexclusion of the complete aorta in the treatment of chronic type B aneurysm. ( 0,574822585054478 )
IEEE Trans Image Process - Geometric flow approach for region-based image segmentation. ( 0,572405886211167 )
IEEE Trans Image Process - Image reduction using means on discrete product lattices. ( 0,572085405668924 )
Comput Methods Programs Biomed - Novel mathematical algorithm for pupillometric data analysis. ( 0,57120869706307 )
IEEE J Biomed Health Inform - Part-based multiderivative edge cross-sectional profiles for polyp detection in colonoscopy. ( 0,567627557620356 )
IEEE Trans Image Process - Surface reconstruction from microscopic images in optical lithography. ( 0,567351233335332 )
IEEE Trans Vis Comput Graph - Stable Feature Flow Fields. ( 0,566390073975135 )
Comput Math Methods Med - Computational approach to seasonal changes of living leaves. ( 0,565689105699691 )
Med Biol Eng Comput - A Kalman filter-based approach to reduce the effects of geometric errors and the measurement noise in the inverse ECG problem. ( 0,565464557098895 )
Comput Methods Programs Biomed - Evaluating iterative algebraic algorithms in terms of convergence and image quality for cone beam CT. ( 0,56518260149451 )
Comput Math Methods Med - Nonrigid medical image registration based on mesh deformation constraints. ( 0,564875204044221 )
Comput Math Methods Med - A meshfree method for simulating myocardial electrical activity. ( 0,564517610370622 )
Int J Comput Assist Radiol Surg - Improved human observer performance in digital reconstructed radiograph verification in head and neck cancer radiotherapy. ( 0,564474297051172 )
Neural Comput - Dynamic state and parameter estimation applied to neuromorphic systems. ( 0,562050836778975 )
Comput Math Methods Med - Modeling schistosomiasis and HIV/AIDS codynamics. ( 0,562038324668011 )
Med Biol Eng Comput - Efficient and robust estimation of blood oxygenation levels in single cerebral veins. ( 0,56142077846863 )
IEEE Trans Pattern Anal Mach Intell - Geodesic Mapping for Dynamic Surface Alignment. ( 0,561136115911472 )
Comput Methods Programs Biomed - Simulation studies on depth of interaction effect correction using a Monte Carlo computed system matrix for brain positron emission tomography. ( 0,560791499138477 )
Comput Math Methods Med - Global hopf bifurcation on two-delays leslie-gower predator-prey system with a prey refuge. ( 0,559724401734378 )
Comput Math Methods Med - Numerical solutions for a model of tissue invasion and migration of tumour cells. ( 0,559346719220902 )
IEEE Trans Image Process - Simulation of fractional Brownian surfaces via spectral synthesis on manifolds. ( 0,559169849592052 )
IEEE Trans Vis Comput Graph - Anisotropic Elliptic PDEs for Feature Classification. ( 0,558143808686278 )
IEEE Trans Vis Comput Graph - Fast Sparse Level Sets on Graphics Hardware. ( 0,557970866961469 )
IEEE Trans Vis Comput Graph - Real-Time Shape Illustration Using Laplacian Lines. ( 0,5577208452139 )
IEEE Trans Image Process - 3-D reconstruction of microtubules from multi-angle total internal reflection fluorescence microscopy using Bayesian framework. ( 0,55709208556406 )
Comput Methods Programs Biomed - Validated finite element models of the proximal femur using two-dimensional projected geometry and bone density. ( 0,55705448666395 )
IEEE Trans Image Process - Discretization error analysis and adaptive meshing algorithms for fluorescence diffuse optical tomography in the presence of measurement noise. ( 0,556023426077625 )
IEEE Trans Image Process - Improving shape retrieval by spectral matching and meta similarity. ( 0,555735815990036 )
Neural Comput - Functional identification of spike-processing neural circuits. ( 0,555150703070057 )
J Chem Inf Model - Fitting of dihedral terms in classical force fields as an analytic linear least-squares problem. ( 0,554855790392802 )
J Chem Inf Model - Conformational preferences of modified uridines: comparison of AMBER derived force fields. ( 0,55398016634348 )
Neural Comput - On convergence rates of mixtures of polynomial experts. ( 0,553665912313536 )
Comput. Biol. Med. - An implicit evolution scheme for active contours and surfaces based on IIR filtering. ( 0,550471331510756 )
IEEE Trans Image Process - From point to local neighborhood: polyp detection in CT colonography using geodesic ring neighborhoods. ( 0,550413624123189 )
Comput Math Methods Med - An object-oriented simulator for 3D digital breast tomosynthesis imaging system. ( 0,550075687782871 )
Neural Comput - Effect of phase response curve skewness on synchronization of electrically coupled neuronal oscillators. ( 0,549326668145886 )
IEEE Trans Pattern Anal Mach Intell - Active Learning Based on Locally Linear Reconstruction. ( 0,545803068539457 )
Med Biol Eng Comput - Computer simulation of three-dimensional plaque formation and progression in the carotid artery. ( 0,545713451723235 )
Int J Comput Assist Radiol Surg - Mesh-based method for measuring intracranial volume in patients with craniosynostosis. ( 0,545205662118926 )
Med Biol Eng Comput - Patient-specific computational fluid dynamics: structured mesh generation from coronary angiography. ( 0,544387206146022 )
IEEE Trans Image Process - A model based iterative reconstruction algorithm for high angle annular dark field-scanning transmission electron microscope (HAADF-STEM) tomography. ( 0,544300040588037 )
Med Biol Eng Comput - CSF dynamic analysis of a predictive pulsatility-based infusion test for normal pressure hydrocephalus. ( 0,544159521664671 )
Comput Math Methods Med - Numerical stability of partitioned approach in fluid-structure interaction for a deformable thin-walled vessel. ( 0,542327567880824 )
IEEE Trans Image Process - Example-driven manifold priors for image deconvolution. ( 0,542265868439573 )
Neural Comput - Computing confidence intervals for point process models. ( 0,542106448665844 )
Int J Comput Assist Radiol Surg - A morphological study of anatomical plates for acetabular posterior column. ( 0,540859294702275 )
IEEE J Biomed Health Inform - A bicluster-based Bayesian principal component analysis method for microarray missing value estimation. ( 0,536927093469605 )
J Chem Inf Model - Comparison of resonance assisted and charge assisted effects in strengthening of hydrogen bonds in dipyrrins. ( 0,536553259251469 )
Int J Comput Assist Radiol Surg - Open-source surface mesh-based ultrasound-guided spinal intervention simulator. ( 0,536534855214108 )
IEEE Trans Image Process - Feature adaptive co-segmentation by complexity awareness. ( 0,534948490659832 )
Comput Math Methods Med - Global stability of HIV infection of CD4+ T cells and macrophages with CTL immune response and distributed delays. ( 0,534558310449005 )
Comput Math Methods Med - Bifurcations and stability of nondegenerated homoclinic loops for higher dimensional systems. ( 0,533957570171583 )
Comput Math Methods Med - Fitting C? continuous parametric surfaces to frontiers delimiting physiologic structures. ( 0,53341570772214 )