2014
Phase rotation in correlation coefficient filtering and multi-pass methods for 3-D speckle tracking in 4-D echocardiography
Wong E, O'Donnell M, Compas C, Lin B, Sinusas A, Duncan J. Phase rotation in correlation coefficient filtering and multi-pass methods for 3-D speckle tracking in 4-D echocardiography. 2014, 1-4. DOI: 10.1109/ultsym.2014.0001.Peer-Reviewed Original ResearchPeak hopping artifactsTwo-pass processingPeak hoppingPhase rotationLocal strain distributionLow strain casesMulti-pass processMulti-pass methodDisplacement accuracyLarge strainsStrain distributionAxial displacementDisplacement estimatesStrain casePrevious passSubsequent passOrthogonal directionsTransition zoneFrame rateFilterTrackingConventional correlation filtersSpeckle trackingFilteringCorrelation filter
2013
4-D echocardiography assessment of local myocardial strain using 3-D speckle tracking combined with shape tracking
Wong E, O'Donnell M, Thiele K, Comnas C, Huang X, Sampath S, Lin B, Pal P, Papademetris X, Dione D, Staib L, Sinusas A, Duncan J. 4-D echocardiography assessment of local myocardial strain using 3-D speckle tracking combined with shape tracking. 2013, 100-103. DOI: 10.1109/ultsym.2013.0026.Peer-Reviewed Original Research
2012
Multi-Band Confidence Processing for Two-Pass Speckle Tracking
Wong E, Odonnell M, Compas C, Lin B, Sinusas A, Duncan J. Multi-Band Confidence Processing for Two-Pass Speckle Tracking. 2012, 200-203. DOI: 10.1109/ultsym.2012.0050.Peer-Reviewed Original ResearchTwo-pass approachCorrelation-based trackingSmall search regionSub-band imagesPeak hoppingAdjacent framesSearch regionTwo-pass methodConfidence weightsSingle-pass methodInterframe displacementTrackingPixelsImagesInitial guessRF imagesCubic interpolationRF dataPrevious passMulti-band algorithmDisplacement estimatesDifferent frequency componentsBroadband imagesConfidence indexAlgorithm