TY - JOUR
T1 - Analysis and compensation for the effect of the catheter position on image intensities in intravascular optical coherence tomography
AU - Liu, Shengnan
AU - Eggermont, Jeroen
AU - Wolterbeek, Ron
AU - Broersen, Alexander
AU - Busk, Carol A.G.R.
AU - Precht, Helle
AU - Lelieveldt, Boudewijn P.F.
AU - Dijkstra, Jouke
PY - 2016
Y1 - 2016
N2 - Intravascular optical coherence tomography (IVOCT) is an imaging technique that is used to analyze the underlying cause of cardiovascular disease. Because a catheter is used during imaging, the intensities can be affected by the catheter position. This work aims to analyze the effect of the catheter position on IVOCT image intensities and to propose a compensation method to minimize this effect in order to improve the visualization and the automatic analysis of IVOCT images. The effect of catheter position is modeled with respect to the distance between the catheter and the arterial wall (distance-dependent factor) and the incident angle onto the arterial wall (angle-dependent factor). A light transmission model incorporating both factors is introduced. On the basis of this model, the interaction effect of both factors is estimated with a hierarchical multivariant linear regression model. Statistical analysis shows that IVOCT intensities are significantly affected by both factors with p<0.001, as either aspect increases the intensity decreases. This effect differs for different pullbacks. The regression results were used to compensate for this effect. Experiments show that the proposed compensation method can improve the performance of the automatic bioresorbable vascular scaffold strut detection.
AB - Intravascular optical coherence tomography (IVOCT) is an imaging technique that is used to analyze the underlying cause of cardiovascular disease. Because a catheter is used during imaging, the intensities can be affected by the catheter position. This work aims to analyze the effect of the catheter position on IVOCT image intensities and to propose a compensation method to minimize this effect in order to improve the visualization and the automatic analysis of IVOCT images. The effect of catheter position is modeled with respect to the distance between the catheter and the arterial wall (distance-dependent factor) and the incident angle onto the arterial wall (angle-dependent factor). A light transmission model incorporating both factors is introduced. On the basis of this model, the interaction effect of both factors is estimated with a hierarchical multivariant linear regression model. Statistical analysis shows that IVOCT intensities are significantly affected by both factors with p<0.001, as either aspect increases the intensity decreases. This effect differs for different pullbacks. The regression results were used to compensate for this effect. Experiments show that the proposed compensation method can improve the performance of the automatic bioresorbable vascular scaffold strut detection.
KW - angle-dependency of near-infrared light
KW - backscattered intensity
KW - distance-dependency of near-infrared
KW - hierarchical linear regression
KW - intracoronary optical coherence tomography
KW - Intravascular optical coherence tomography
UR - http://www.scopus.com/inward/record.url?scp=85004009807&partnerID=8YFLogxK
UR - http://resolver.tudelft.nl/uuid:320a952f-7328-4449-90b3-8111ea4b9ad5
U2 - 10.1117/1.JBO.21.12.126005
DO - 10.1117/1.JBO.21.12.126005
M3 - Article
C2 - 27926746
AN - SCOPUS:85004009807
SN - 1083-3668
VL - 21
SP - 1
EP - 10
JO - Journal of Biomedical Optics
JF - Journal of Biomedical Optics
IS - 12
M1 - 126005
ER -