Evaluation of circumferential and longitudinal strain in a rabbit fetal heart model using 4D echocardiography

Vineet Apte, Lydia Tam, Angela Han, Meihua Zhu, Muhammad Ashraf, David Sahn, Zhijun Zhang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Strain determination in fetal hearts is essential but conventional methods do not provide opportunities for orthogonal strain analysis and require the use of EKG-gating. A new non-gated 4D echocardiography method was tested for accuracy in strain computation. Fifteen rabbit hearts were studied. Each heart was mounted in a water tank to facilitate ultrasound scanning, connected to a calibrated pump by a balloon sutured into the left ventricle (LV), and pumped at Stroke Volumes (SV) 1-5 ml and Stroke Rates (SR) 40 and 80 bpm. Three 0.7mm sonomicrometry crystals were secured in the myocardium to conduct longitudinal strain (LS) and circumferential strain (CS) measurements. At each SV and each SR, 4D images were obtained by an X6-1 probe interfaced with the Philips iU-22 ultrasound system while sonomicrometry displacement was recorded. This process was performed pre and post simulated myocardial infarction (MI). 4D images were analyzed offline for strain by a MATLAB-based program. 4D echocardiography- derived strain data correlated with sonomicrometry-derived strain at each SV (CS: R2; = 0.91, p2; = 0.87, p

Original languageEnglish (US)
Title of host publicationProceedings of the IEEE Annual Northeast Bioengineering Conference, NEBEC
Pages23-24
Number of pages2
DOIs
StatePublished - 2013
Event39th Annual Northeast Bioengineering Conference, NEBEC 2013 - Syracuse, NY, United States
Duration: Apr 5 2013Apr 7 2013

Other

Other39th Annual Northeast Bioengineering Conference, NEBEC 2013
CountryUnited States
CitySyracuse, NY
Period4/5/134/7/13

Fingerprint

Echocardiography
Ultrasonics
Water tanks
Strain measurement
Balloons
Electrocardiography
MATLAB
Pumps
Scanning
Crystals

Keywords

  • cardiac
  • cardiology
  • echocardiography
  • fetal
  • myocardial infarction

ASJC Scopus subject areas

  • Bioengineering

Cite this

Apte, V., Tam, L., Han, A., Zhu, M., Ashraf, M., Sahn, D., & Zhang, Z. (2013). Evaluation of circumferential and longitudinal strain in a rabbit fetal heart model using 4D echocardiography. In Proceedings of the IEEE Annual Northeast Bioengineering Conference, NEBEC (pp. 23-24). [6574338] https://doi.org/10.1109/NEBEC.2013.18

Evaluation of circumferential and longitudinal strain in a rabbit fetal heart model using 4D echocardiography. / Apte, Vineet; Tam, Lydia; Han, Angela; Zhu, Meihua; Ashraf, Muhammad; Sahn, David; Zhang, Zhijun.

Proceedings of the IEEE Annual Northeast Bioengineering Conference, NEBEC. 2013. p. 23-24 6574338.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Apte, V, Tam, L, Han, A, Zhu, M, Ashraf, M, Sahn, D & Zhang, Z 2013, Evaluation of circumferential and longitudinal strain in a rabbit fetal heart model using 4D echocardiography. in Proceedings of the IEEE Annual Northeast Bioengineering Conference, NEBEC., 6574338, pp. 23-24, 39th Annual Northeast Bioengineering Conference, NEBEC 2013, Syracuse, NY, United States, 4/5/13. https://doi.org/10.1109/NEBEC.2013.18
Apte V, Tam L, Han A, Zhu M, Ashraf M, Sahn D et al. Evaluation of circumferential and longitudinal strain in a rabbit fetal heart model using 4D echocardiography. In Proceedings of the IEEE Annual Northeast Bioengineering Conference, NEBEC. 2013. p. 23-24. 6574338 https://doi.org/10.1109/NEBEC.2013.18
Apte, Vineet ; Tam, Lydia ; Han, Angela ; Zhu, Meihua ; Ashraf, Muhammad ; Sahn, David ; Zhang, Zhijun. / Evaluation of circumferential and longitudinal strain in a rabbit fetal heart model using 4D echocardiography. Proceedings of the IEEE Annual Northeast Bioengineering Conference, NEBEC. 2013. pp. 23-24
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