Second-generation optical coherence tomography in clinical practice. High-speed data acquisition is highly reproducible in patients undergoing percutaneous coronary intervention.
OBJECTIVE
The development of second-generation optical coherence tomography (i.e. Fourier domain optical coherence tomography, FD-OCT) has made it possible to perform high speed pullbacks during image acquisition without the need for transient occlusion of the coronary artery. The objective of this study was to assess the reproducibility of FD-OCT systems for characterizing plaque and evaluating stent implantation in patients undergoing a percutaneous coronary intervention.


METHODS
The study included 45 patients scheduled for percutaneous coronary intervention who were enrolled between May and December 2008. Image acquisition was performed by FD-OCT using a non-occlusive technique and employing pullback speeds ranging from 5 to 20 mm/s. Interstudy, interobserver and intraobserver reproducibility of plaque characterization and stent analysis were assessed.


RESULTS
Fourier domain imaging was successfully performed in all patients (n=45). The average flush rate was 3+/-0.4 mL/s and the contrast volume per pullback was 16.1+/-3.5 mL. The mean pullback duration and length were 3.2+/-1.2 s and 53.3+/-12.4 mm, respectively. The interstudy reproducibility for visualizing edge dissection, tissue prolapse, intrastent dissection and malapposition was excellent (k=1). The kappa values for interstudy, interobserver and intraobserver agreement on plaque characterization were 0.92, 0.82 and 0.95, respectively.


CONCLUSIONS
A second-generation OCT system (i.e. FD-OCT) involving high-speed data acquisition demonstrated good interstudy, interobserver and intraobserver reproducibility for characterizing plaque and evaluating stent implantation in patients undergoing a percutaneous coronary intervention.
Gonzalo
Nieves
N
Thoraxcenter, Erasmus MC, Rotterdam, Países Bajos.
Tearney
Guillermo J
GJ
Serruys
Patrick W
PW
van Soest
Gijs
G
Okamura
Takayuki
T
García-García
Héctor M
HM
Jan van Geuns
Robert
R
van der Ent
Martin
M
Ligthart
Jurgen
J
Bouma
Brett E
BE
Regar
Evelyn
E
D015906:Angioplasty, Balloon, Coronary; D003324:Coronary Artery Disease / Q000175:diagnosis* / Q000628:therapy*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015203:Reproducibility of Results; D015607:Stents; D013997:Time Factors; D041623:Tomography, Optical Coherence / Q000379:methods