TY - JOUR
T1 - Image-based gating of intravascular ultrasound pullback sequences
AU - O'Malley, Sean M.
AU - Granada, Juan F.
AU - Carlier, Stéphane
AU - Naghavi, Morteza
AU - Kakadiaris, Ioannis A.
N1 - Funding Information:
Manuscript received March 12, 2007; revised October 27, 2007. This work was supported in part by the National Science Foundation (NSF) under Grant IIS-0431144 and in part by the NSF Graduate Research Fellowship (SMO). S. M. O’Malley and I. A. Kakadiaris are with the Computational Biomedicine Laboratory, Department of Computer Science, University of Houston, Houston, TX 77204 USA (e-mail: [email protected]; [email protected]). J. F. Granada is with the Methodist Hospital Research Institute, Houston, TX 77002 USA (e-mail: [email protected]). S. Carlier is with the Cardiovascular Research Foundation, New York, NY 10022 USA (e-mail: [email protected]). M. Naghavi is with the Association for Eradication of Heart Attack, Houston, TX 77054 USA (e-mail: [email protected]). Color versions of one or more of the figures in this paper are available online at http://ieeexplore.ieee.org. Digital Object Identifier 10.1109/TITB.2008.921014
PY - 2008/5
Y1 - 2008/5
N2 - Intravascular ultrasound (IVUS) sequences recorded in vivo are subject to a wide array of motion artifacts as the majority of these studies are performed within the coronary arteries of a beating heart. To eliminate these artifacts, an electrocardiogram (ECG) signal is typically used to gate (collect) those frames recorded at the points in time associated with a particular fraction of the cardiac cycle. However, this technique may be suboptimal for a number of reasons, among which is the difficulty of determining the optimal fraction at which to gate. This value is generally nonobvious. To circumvent this problem, we introduce a frame-gating method for IVUS pullbacks that mimics ECG (i.e., in the sense that it selects only one frame per cardiac cycle), but will automatically choose the fraction of the cycle that renders the most stable gated frame set. Stability here is gauged by measuring interframe similarity. Our method operates exclusively on the imagery data and does not require ECG or any form of image segmentation or other high-level image analysis. To validate our algorithm, we compare its behavior versus true ECG gating.
AB - Intravascular ultrasound (IVUS) sequences recorded in vivo are subject to a wide array of motion artifacts as the majority of these studies are performed within the coronary arteries of a beating heart. To eliminate these artifacts, an electrocardiogram (ECG) signal is typically used to gate (collect) those frames recorded at the points in time associated with a particular fraction of the cardiac cycle. However, this technique may be suboptimal for a number of reasons, among which is the difficulty of determining the optimal fraction at which to gate. This value is generally nonobvious. To circumvent this problem, we introduce a frame-gating method for IVUS pullbacks that mimics ECG (i.e., in the sense that it selects only one frame per cardiac cycle), but will automatically choose the fraction of the cycle that renders the most stable gated frame set. Stability here is gauged by measuring interframe similarity. Our method operates exclusively on the imagery data and does not require ECG or any form of image segmentation or other high-level image analysis. To validate our algorithm, we compare its behavior versus true ECG gating.
KW - Cardiac cycle
KW - Electrocardiogram
KW - Frame gating
KW - Heart rate
KW - Intravascular ultrasound (IVUS)
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U2 - 10.1109/TITB.2008.921014
DO - 10.1109/TITB.2008.921014
M3 - Article
C2 - 18693497
AN - SCOPUS:44449158939
SN - 1089-7771
VL - 12
SP - 299
EP - 306
JO - IEEE Transactions on Information Technology in Biomedicine
JF - IEEE Transactions on Information Technology in Biomedicine
IS - 3
ER -