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Performance of elastic image registration against speckle tracking for 2D cardiac motion and strain estimation

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Abstract
Despite the availability of multiple solutions for assessing myocardial strain, little is currently known about the relative performance of the different methods. In this study, we sought to contrast two popular strain estimation techniques directly (block-matching and registration) in an in-vivo setting by comparing both to a gold standard reference measurement. Mid short-axis images were acquired with a GE Vivid7 ultrasound system in five open-chest sheep instrumented with ultrasonic microcrystals. Radial (epsilon(RR)) and circumferential strain (epsilon(CC)) were estimated during four stages: at rest, during esmolol and dobutamine infusion, and during acute ischemia. While the correlations of a well-validated block matching approach and the elastic registration method were comparable for the epsilon(CC) component (0.82 vs 0.81 respectively), imposing regularization during the motion estimation process (i.e. as embedded in the elastic registration method), showed to be advantageous to estimate epsilon(RR) as it improved performance significantly (0.63 vs 0.83; p=0.05). Moreover, the bias and the limits of agreement were also smaller in this direction (p<0.01).
Keywords
VALIDATION, TOOL, cardiac strain assessment, 2-DIMENSIONAL STRAIN, REGIONAL MYOCARDIAL-FUNCTION, in-vivo setup, Elastic registration, sonomicrometry, block matching

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MLA
Heyde, Brecht, et al. “Performance of Elastic Image Registration against Speckle Tracking for 2D Cardiac Motion and Strain Estimation.” 2011 IEEE International Ultrasonics Symposium (IUS), IEEE, 2011, pp. 931–34, doi:10.1109/ULTSYM.2011.0228.
APA
Heyde, B., Jasaityte, R., Bouchez, S., Vandenheuvel, M., Claus, P., Wouters, P., & D’hooge, J. (2011). Performance of elastic image registration against speckle tracking for 2D cardiac motion and strain estimation. In 2011 IEEE International Ultrasonics Symposium (IUS) (pp. 931–934). New York, NY, USA: IEEE. https://doi.org/10.1109/ULTSYM.2011.0228
Chicago author-date
Heyde, Brecht, Ruta Jasaityte, Stefaan Bouchez, Michaël Vandenheuvel, Piet Claus, Patrick Wouters, and Jan D’hooge. 2011. “Performance of Elastic Image Registration against Speckle Tracking for 2D Cardiac Motion and Strain Estimation.” In 2011 IEEE International Ultrasonics Symposium (IUS), 931–34. New York, NY, USA: IEEE. https://doi.org/10.1109/ULTSYM.2011.0228.
Chicago author-date (all authors)
Heyde, Brecht, Ruta Jasaityte, Stefaan Bouchez, Michaël Vandenheuvel, Piet Claus, Patrick Wouters, and Jan D’hooge. 2011. “Performance of Elastic Image Registration against Speckle Tracking for 2D Cardiac Motion and Strain Estimation.” In 2011 IEEE International Ultrasonics Symposium (IUS), 931–934. New York, NY, USA: IEEE. doi:10.1109/ULTSYM.2011.0228.
Vancouver
1.
Heyde B, Jasaityte R, Bouchez S, Vandenheuvel M, Claus P, Wouters P, et al. Performance of elastic image registration against speckle tracking for 2D cardiac motion and strain estimation. In: 2011 IEEE International Ultrasonics Symposium (IUS). New York, NY, USA: IEEE; 2011. p. 931–4.
IEEE
[1]
B. Heyde et al., “Performance of elastic image registration against speckle tracking for 2D cardiac motion and strain estimation,” in 2011 IEEE International Ultrasonics Symposium (IUS), Orlando, FL, USA, 2011, pp. 931–934.
@inproceedings{3262943,
  abstract     = {Despite the availability of multiple solutions for assessing myocardial strain, little is currently known about the relative performance of the different methods. In this study, we sought to contrast two popular strain estimation techniques directly (block-matching and registration) in an in-vivo setting by comparing both to a gold standard reference measurement. Mid short-axis images were acquired with a GE Vivid7 ultrasound system in five open-chest sheep instrumented with ultrasonic microcrystals. Radial (epsilon(RR)) and circumferential strain (epsilon(CC)) were estimated during four stages: at rest, during esmolol and dobutamine infusion, and during acute ischemia. While the correlations of a well-validated block matching approach and the elastic registration method were comparable for the epsilon(CC) component (0.82 vs 0.81 respectively), imposing regularization during the motion estimation process (i.e. as embedded in the elastic registration method), showed to be advantageous to estimate epsilon(RR) as it improved performance significantly (0.63 vs 0.83; p=0.05). Moreover, the bias and the limits of agreement were also smaller in this direction (p<0.01).},
  author       = {Heyde, Brecht and Jasaityte, Ruta and Bouchez, Stefaan and Vandenheuvel, Michaël and Claus, Piet and Wouters, Patrick and D'hooge, Jan},
  booktitle    = {2011 IEEE International Ultrasonics Symposium (IUS)},
  isbn         = {9781457712524},
  keywords     = {VALIDATION,TOOL,cardiac strain assessment,2-DIMENSIONAL STRAIN,REGIONAL MYOCARDIAL-FUNCTION,in-vivo setup,Elastic registration,sonomicrometry,block matching},
  language     = {eng},
  location     = {Orlando, FL, USA},
  pages        = {931--934},
  publisher    = {IEEE},
  title        = {Performance of elastic image registration against speckle tracking for 2D cardiac motion and strain estimation},
  url          = {http://dx.doi.org/10.1109/ULTSYM.2011.0228},
  year         = {2011},
}

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