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- W2187413145 abstract "Intravascular ultrasound (IVUS) is an imaging modality that enables the physician to visualize structures of coronaries from inside. However, since it is performed on living patients, the heart motion generates artifacts that make structure tracking more difficult for both humans and computers. This study is a quantitative analysis of the impact of heart motion on structures deformation estimation using the classical algorithm of Lucas-Kanade for Optical Flow (OF). This work included a 3D IVUS simulation with artifacts caused by catheter longitudinal displacement and blood vessel deformation due to blood pressure variation. Then, OF was applied to the IVUS images sequence and to a subset of the sequence that considers one phase of the cardiac cycle. The points located at the border of structures presented good movement estimation. In the other hand, for the point located in a homogeneous region, the error of the movement estimation with heart motion was four times greater than the related movement estimation considering only one phase." @default.
- W2187413145 created "2016-06-24" @default.
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- W2187413145 date "2014-01-01" @default.
- W2187413145 modified "2023-09-26" @default.
- W2187413145 title "IMPACT OF CARDIAC MOTION ON DEFORMATION ESTIMATION OF STRUCTURES IN INTRAVASCULAR ULTRASOUND" @default.
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