Estimation of mechanical properties of atherosclerosis plaque from endovascular echography data : Revisited palpography technic
type: Dataset
description: Estimation of mechanical properties of atherosclerosis plaque from endovascular echography data: Revisited palpography technic. The main aim of my works was to develop and propose biomechanical tools based on intravascular (IVUS) sequences to detect and characterize vulnerable coronary atherosclerosis plaques. In the first part of my PhD thesis, I revisited the palpography technique proposed by Céspedes et al. and initially published in Ultrasound in Medicine & Biology in 2000. Céspedes et al. developed the elasticity-palpography approach which allows a fast wall stiffness quantification based on the arterial strain and blood pressure measurements. However, this technique suffers of major limitations since it has been developed for homogeneous, isotropic, quasi incompressible, circular and concentric atherosclerotic plaques, only. Therefore in the current study, the native palpography technique was successfully revisited and improved to account for complex plaque and arbitrary palpography domain geometries. The revisited elasticity-palpography technique was successfully applied to six coronary lesions of patients imaged in vivo with intravascular ultrasound (IVUS). Validation of this method was conducted on simulated data and on IVUS sequences performed on PVA-c phantoms. This new IVUS technique, which successfully estimates the vessel compliance, has been patented. One major limitation of the elasticity reconstruction method proposed recently by our collaborative laboratories (Le Floch et al., Ultrasound Med Bio 2012) is the need to quantify accurately the strain field in the entire lesion. Such global strain-elastogram may be often difficult to extract when using intravascular imaging techniques (as OCT or HD-IVUS ) with limited depth penetration signals or due to the fact that the amplitude of the original signal becomes attenuated as the depth of penetration increases. Therefore, in the second part of my PhD manuscript I revisited and improved our previous appro…
landing page: https://theses.hal.science/tel-00949099
identifier: NNT: 2013GRENS016
keyword: atheroma
keyword: atherome
keyword: carotid
keyword: carotide
keyword: infoeu-reposemanticsdoctoralthesis
keyword: modulographie
keyword: modulography
keyword: morphometric
keyword: morphometrique
keyword: palpographie
keyword: palpography
keyword: plaque
keyword: sdvmheplife-sciences-q-biohuman-health-and-pathology
keyword: theses
issued: 2026-05-06T07:59:03.213387
modified: 2026-05-06T07:59:03.213392
language: fr
contact point: Organization
  fn: CCSD

test_moissonnage_selune
type: Agent

Estimation of mechanical properties of atherosclerosis plaque from endovascular echography data : Revisited palpography technic
type: Distribution
format: HTML
access URL: https://theses.hal.science/tel-00949099
issued: 2026-05-06T07:59:03.217834
modified: 2026-05-06T07:59:03.191876