Title :
Estimation of Arterial Wall Strain Based on IVUS Image Registration
Author :
Liang, Yun ; Oakeson, Kevin D. ; Zhu, Hui ; Friedman, Morton H.
Author_Institution :
Dept. of Biomed. Eng., Duke Univ., Durham, NC
fDate :
Aug. 30 2006-Sept. 3 2006
Abstract :
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
Keywords :
biomechanics; biomedical ultrasonics; blood vessels; cardiovascular system; image colour analysis; image motion analysis; image registration; medical image processing; phantoms; splines (mathematics); tensors; 2D displacement field; 2D strain tensors; arterial wall strain estimation; circumferential strain distributions; color coding; cubic B-splines; intravascular ultrasound images; luminal pressures; nonrigid image registration algorithm; phantom; radial strain distributions; synthetic motion IVUS images; Arteries; Capacitive sensors; Cost function; Geometry; Image registration; Imaging phantoms; Motion estimation; Strain measurement; Tensile stress; Ultrasonic imaging;
Conference_Titel :
Engineering in Medicine and Biology Society, 2006. EMBS '06. 28th Annual International Conference of the IEEE
Conference_Location :
New York, NY
Print_ISBN :
1-4244-0032-5
Electronic_ISBN :
1557-170X
DOI :
10.1109/IEMBS.2006.260038
