The characterisation of blood rotation in a human heart chamber based on statistical analysis of vorticity maps

Kelvin K L Wong, Richard M. Kelso, Stephen G. Worthley, Prashanthan Sanders, Jagannath Mazumdar, Derek Abbott

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

Abstract

Modelling of non-stationary cardiac structures is complicated by the complexity of their intrinsic and extrinsic motion. The first known study of haemodynamics due to the beating of heart was made by Leonardo Da Vinci, giving the idea of fluid-solid interaction by describing how vortices develop during cardiac structural interaction with the blood. Heart morphology affects in changes of cardio dynamics during the systolic and diastolic phrases. In a chamber of the heart, vortices are discovered to exist as the result of the unique morphological changes of the cardiac chamber wall by using flow-imaging techniques such as phase contrast magnetic resonance imaging. The first part of this paper attempts to quantify vortex characteristics by means of calculating vorticity numerically and devising two dimensional vortical flow maps. The technique relies on determining the properties of vorticity using a statistical quantification of the flow maps and comparison of these quantities based on different scenarios. As the characteristics of our vorticity maps vary depending on the phase of a cardiac cycle, there is a need for robust quantification method to analyse vorticity. In the second part of the paper, the approach is then utilised for examining vortices within the human right atrium. Our study has shown that a proper quantification of vorticity for the flow field can indicate the strength and number of vortices within a heart chamber.

LanguageEnglish
Title of host publicationBiomedical Applications of Micro- and Nanoengineering IV and Complex Systems
Volume7270
DOIs
Publication statusPublished - 19 Jun 2009
EventBiomedical Applications of Micro- and Nanoengineering IV and Complex Systems - Melbourne, VIC, Australia
Duration: 10 Dec 200812 Dec 2008

Other

OtherBiomedical Applications of Micro- and Nanoengineering IV and Complex Systems
CountryAustralia
CityMelbourne, VIC
Period10/12/0812/12/08

Keywords

  • Histogram
  • Phase contrast magnetic resonance imaging
  • Segmentation
  • Vorticity

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Atomic and Molecular Physics, and Optics
  • Radiology Nuclear Medicine and imaging

Cite this

Wong, K. K. L., Kelso, R. M., Worthley, S. G., Sanders, P., Mazumdar, J., & Abbott, D. (2009). The characterisation of blood rotation in a human heart chamber based on statistical analysis of vorticity maps. In Biomedical Applications of Micro- and Nanoengineering IV and Complex Systems (Vol. 7270) https://doi.org/10.1117/12.810703