2024
Residual Ultrasound-Enhancing Agents Mimicking Portal Venous Gas
Bitar R, Langdon J, Kaur M, Crandall I, McNamara R, Revzin M. Residual Ultrasound-Enhancing Agents Mimicking Portal Venous Gas. Ultrasound Quarterly 2024, 40: e00694. PMID: 39466239, DOI: 10.1097/ruq.0000000000000694.Peer-Reviewed Original ResearchConceptsUltrasound enhancing agentsPortal venous gasBowel ischemiaAbdominal ultrasoundVenous gasEchogenic fociContrast-enhanced echocardiographyEvaluation of cardiac functionPortal venous systemSeries of casesSonographic detectionCardiac functionDifferential diagnosisPortal veinVenous systemObservational studyLiver parenchymaPortal triadsVascular patencyBowelIschemiaEchocardiographyLiverUltrasound
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 ResearchMeSH KeywordsEchocardiographyEchocardiography, Three-DimensionalHeartHumansMyocardial InfarctionVentricular Dysfunction, LeftConceptsSpatial 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