PT Unknown
AU Simone Balocco
   Francesco Ciompi
   Juan Rigla
   Xavier Carrillo
   J. Mauri
   Petia Radeva
TI Intra-Coronary Stent localization In Intravascular Ultrasound Sequences, A Preliminary Study
BT International workshop on Computing and Visualization for Intravascular Imaging and Computer Assisted Stenting  (CVII-STENT)
PY 2017
AB An intraluminal coronary stent is a metal scaold deployed in a stenotic artery during Percutaneous Coronary Intervention (PCI).Intravascular Ultrasound (IVUS) is a catheter-based imaging technique generally used for assessing the correct placement of the stent. All the approaches proposed so far for the stent analysis only focused on the struts detection, while this paper proposes a novel approach to detect the boundaries and the position of the stent along the pullback.The pipeline of the method requires the identication of the stable framesof the sequence and the reliable detection of stent struts. Using this data,a measure of likelihood for a frame to contain a stent is computed. Then,a robust binary representation of the presence of the stent in the pullbackis obtained applying an iterative and multi-scale approximation of the signal to symbols using the SAX algorithm. Results obtained comparing the automatic results versus the manual annotation of two observers on 80 IVUS in-vivo sequences shows that the method approaches the inter-observer variability scores.
ER