# Fast rigid registration of vascular structures in IVUS sequences

Carlo Gatta, Oriol Pujol, Oriol Rodriguez Leor, Josepa Mauri Ferre, Petia Radeva

Research output: Contribution to journalArticleResearchpeer-review

19 Citations (Scopus)

## Abstract

Intravascular ultrasound (IVUS) technology permits visualization of high-resolution images of internal vascular structures. IVUS is a unique image-guiding tool to display longitudinal view of the vessels, and estimate the length and size of vascular structures with the goal of accurate diagnosis. Unfortunately, due to pulsatile contraction and expansion of the heart, the captured images are affected by different motion artifacts that make visual inspection difficult. In this paper, we propose an efficient algorithm that aligns vascular structures and strongly reduces the saw-shaped oscillation, simplifying the inspection of longitudinal cuts; it reduces the motion artifacts caused by the displacement of the catheter in the short-axis plane and the catheter rotation due to vessel tortuosity. The algorithm prototype aligns $\hbox{3.16}$ frames/s and clearly outperforms state-of-the-art methods with similar computational cost. The speed of the algorithm is crucial since it allows to inspect the corrected sequence during patient intervention. Moreover, we improved an indirect methodology for IVUS rigid registration algorithm evaluation. © 2006 IEEE.
Original language English 5175464 1006-1011 IEEE Transactions on Information Technology in Biomedicine 13 6 https://doi.org/10.1109/TITB.2009.2027230 Published - 1 Nov 2009

## Keywords

• Catheter motion artifacts
• Fast radial symmetry transform (FRST)
• Intravascular ultrasound (IVUS)
• Spectral correlation analysis