Knowledge of the Young's modulus distribution of an atherosclerotic artery allows for differentiation between its components. Intravascular elastography generates an artifactual image of this Young's modulus distribution. A finite element model (FEM) can assist in interpreting the elastogram and give its Young's modulus distribution by inverse problem solution. Intravascular ultrasound (IVUS) measurements were performed on a hard phantom with soft eccentric plaque and an atherosclerotic coronary artery. The complex FEM geometry and Young's modulus distribution were defined using a custom-made graphical user interface. Next elastograms were calculated from IVUS data and compared with FEM elastograms. IVUS and FEM elastograms showed excellent agreement in case of the phantom and a similar pattern in case of the artery. Strain values in the FEM elastogram appeared highly sensitive for variations in the Young's modulus but not in the Poisson's ratio.
|Number of pages||4|
|Journal||Proceedings of the IEEE Ultrasonics Symposium|
|Publication status||Published - 2002|
|Event||2002 IEEE Ultrasonics Symposium - Munich, Germany|
Duration: 8 Oct 2002 → 11 Oct 2002