Estimation of arterial wall strain based on IVUS image registration.
In this study, we propose a method to estimate arterial wall strain using intravascular ultrasound (IVUS) images. The method is based on a nonrigid image registration algorithm, which represents the displacement field by cubic B-splines, and incorporates smoothness and incompressibility constraints. The 2D displacement field is then used to calculate the local strain tensors. With the 2D strain tensors, both radial and circumferential strain distributions can be obtained, and color-coded for display. The algorithm has been evaluated with synthetic motion IVUS images and phantom IVUS images under two luminal pressures.
Liang
Yun
Y
Dept. of Biomed. Eng., Duke Univ., Durham, NC 27708, USA. YL18@duke.edu
Oakeson
Kevin D
KD
Zhu
Hui
H
Friedman
Morton H
MH
D000465:Algorithms; D001158:Arteries / Q000000981:diagnostic imaging* / Q000503:physiopathology; D050197:Atherosclerosis / Q000000981:diagnostic imaging / Q000503:physiopathology; D001698:Biomedical Engineering; D054459:Elasticity Imaging Techniques / Q000379:methods / Q000706:statistics & numerical data; D006801:Humans; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D019047:Phantoms, Imaging