2 Citations (Scopus)

Abstract

Non-invasive estimation of the pressure gradient in cardiovascular stenosis has much clinical importance in assisting the diagnosis and treatment of stenotic diseases. In this research, a systematic comparison is conducted to investigate the accuracy of a group of stenosis models against the MRI- and catheter-measured patient data under the aortic coarctation condition. Eight analytical stenosis models, including six from the literature and two proposed in this study, are investigated to examine their prediction accuracy against the clinical data. The two improved models proposed in this study consider comprehensively the Poiseuille loss, the Bernoulli loss in its exact form, and the entrance effect, of the blood flow. Comparison of the results shows that one of the proposed models demonstrates a cycle-averaged mean prediction error of −0.15 ± 3.03 mmHg, a peak-to-peak prediction error of −1.8 ± 6.89 mmHg, which is the best among the models studied.

Original languageEnglish
Pages (from-to)171-190
Number of pages20
JournalJOURNAL OF BIOLOGICAL PHYSICS
Volume47
Issue number2
DOIs
Publication statusPublished - Jun 2021

Keywords

  • Aortic coarctation
  • Bernoulli loss
  • Entrance effect
  • Poiseuille loss
  • Pressure gradient
  • Stenosis model

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