3D cardiac strain imaging using a novel tracking method

R. G.P. Lopata, M. M. Nillesen, I. H. Gerrits, H. H.G. Hansen, L. Kapusta, J. M. Thijssen, C. L. De Korte

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

9 Scopus citations

Abstract

Current developments in 3D ultrasound imaging are boosting research in 3D strain imaging. 3D cardiac strain imaging seems promising considering the complex 3D structure and deformation of the heart. Segmentation and tracking of the tissue-of-interest is necessary for proper strain imaging. This study focuses on tracking of myocardial tissue using displacements and strain, derived from radio frequency ultrasound data. A novel tracking method was implemented to reconstruct strain from inter-frame strain measurements (i.e. strain rate). A region-of-interest (ROI) was deformed using displacement measurements and regularized using the behavior of neighbouring pixels. The forces were weighted using the difference between theoretical and measured cross-correlation values. The tracking method was tested using a tube phantom, which was heavily translated and dilated using a pressure column. Displacements and strain rate were estimated using the radio frequency data. Next, Biplane images of a canine heart were acquired. The strain algorithm was applied on the data. ROIs in the lateral wall in both the short and long axis view were manually segmented and subsequently tracked. In the phantom, each pixel within the ROI was tracked separately. The local strains were reconstructed correctly after tracking, despite large translations and deformations. Using the translational behavior of neighbouring pixels was favored over mesh regularization. In the animals, the strain curves were consistent with other animal and human studies on strain imaging. Furthermore, the strain curves showed less drift and higher peak strains after tracking.

Original languageEnglish
Title of host publication4th European Conference of the International Federation for Medical and Biological Engineering - ECIFMBE 2008
Pages697-700
Number of pages4
DOIs
StatePublished - 2008
Externally publishedYes
Event4th European Conference of the International Federation for Medical and Biological Engineering, ECIFMBE 2008 - Antwerp, Belgium
Duration: 23 Nov 200827 Nov 2008

Publication series

NameIFMBE Proceedings
Volume22
ISSN (Print)1680-0737

Conference

Conference4th European Conference of the International Federation for Medical and Biological Engineering, ECIFMBE 2008
Country/TerritoryBelgium
CityAntwerp
Period23/11/0827/11/08

Keywords

  • 3D
  • Cardiac strain
  • Strain imaging
  • Tracking
  • Ultrasound

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