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
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