2022
Co-attention spatial transformer network for unsupervised motion tracking and cardiac strain analysis in 3D echocardiography
Ahn S, Ta K, Thorn S, Onofrey J, Melvinsdottir I, Lee S, Langdon J, Sinusas A, Duncan J. Co-attention spatial transformer network for unsupervised motion tracking and cardiac strain analysis in 3D echocardiography. Medical Image Analysis 2022, 84: 102711. PMID: 36525845, PMCID: PMC9812938, DOI: 10.1016/j.media.2022.102711.Peer-Reviewed Original ResearchConceptsSpatial transformer networkMotion trackingNoisy displacement fieldReliable motion estimationMotion tracking methodCardiac strain analysisTransformer networkDisplacement fieldDisplacement pathsMotion fieldTracking methodMotion estimationExperimental resultsStrain analysisSuperior performanceTemporal constraintsCardiac motionTrackingRegularization functionDependent featuresEchocardiography imagesNetworkPrior assumptionsField
2007
4D Elasticity Imaging of PVA LV Phantom Integrated with Pulsatile Circulation System Using 2D Phased Array
Jia C, Kim K, Kolias T, Rubin J, Weitzel W, Yan P, Dione D, Sinusas A, Duncan J, O'Donnell M. 4D Elasticity Imaging of PVA LV Phantom Integrated with Pulsatile Circulation System Using 2D Phased Array. 2014 IEEE International Ultrasonics Symposium 2007, 876-879. DOI: 10.1109/ultsym.2007.224.Peer-Reviewed Original ResearchData volumeComplex cardiac motionCardiac motionPulsatile circulation systemChallenging issueLV phantomReal timeElasticity imagingKernel sizeTrackingData setsPlane motionElasticity imaging techniquesHeart motionPolyvinyl alcohol cryogelPulsatile pumpCommercial 2DThird dimensionPVA cryogelElasticity imagesCirculation systemFreeze-thaw cyclesUltrasound scatterersVentricular phantomAzimuthal displacement
2003
Analysis of Left Ventricular Motion Using a General Robust Point Matching Algorithm
Lin N, Papademetris X, Sinusas A, Duncan J. Analysis of Left Ventricular Motion Using a General Robust Point Matching Algorithm. Lecture Notes In Computer Science 2003, 2878: 556-563. DOI: 10.1007/978-3-540-39899-8_69.Peer-Reviewed Original ResearchPoint matching algorithmRobust point matching algorithmMatching algorithmNon-rigid cardiac motionDimensional medical imagesShape-based informationRobust Point MatchingCardiac magnetic resonance imagesNon-rigid transformationMedical imagesNumber of applicationsPoint matchingSynthetic dataAlgorithmOwn previous workLeft ventricular motionMagnetic resonance imagesCardiac motionImagesPrevious workResonance imagesSegmentationMatchingVentricular motionPriors
1996
Dense nonrigid motion tracking from a sequence of velocity fields
Meyer F, Constable R, Sinusas A, Duncan J. Dense nonrigid motion tracking from a sequence of velocity fields. 2015 IEEE Conference On Computer Vision And Pattern Recognition (CVPR) 1996, 839-844. DOI: 10.1109/cvpr.1996.517169.Peer-Reviewed Original Research