David Rotger

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OBJECTIVES This study sought to evaluate late recoil of a novel bioabsorbable everolimus-eluting coronary stent (BVS), which is composed of a poly-L-lactic acid backbone, coated with a bioabsorbable polymer containing everolimus. BACKGROUND Little is known about the mechanical behavior of bioabsorbable polymer stents after deployment in diseased human(More)
The growing appreciation of the pathophysiological and prognostic importance of arterial morphology have led to the realization that angiograms are inherently limited in defining the distribution and extension of coronary wall disease. By IntraVascular UltraSound (IVUS) physicians have a picture of the composition of vessel in detail. However, observing an(More)
Lumen volume variations is of great interest by the physicians given it reduces the probability of infarction as it increases. In this paper we present a fast and efficient method to detect the lumen borders in longitudinal cuts of IVUS sequences using an AdaBoost classifier trained with several local features assuring their stability. We propose a(More)
This article is devoted to the creation of a near-real time framework to discriminate between tissue and blood. We perform a fast supervised learning of local texture patterns of the plaque using Local Binary Patterns. A classifier is build by assembling weak classifiers using boosting schemes that allow quick performance and reliability. After that, a(More)
ActiveVessel is a new multimedia workstation which enables the visualization, acquisition and handling of both image modalities, onand offline. It enables DICOM v3.0 decompression and browsing, video acquisition, reproduction and storage for IntraVascular UltraSound (IVUS) and angiograms with their corresponding ECG, automatic catheter segmentation in(More)
The growing appreciation of the pathophysiological and prognostic importance of arterial morphology has led to the realization that angiograms are inherently limited in defining the distribution and extension of coronary wall disease. By Intravascular Ultrasound images physicians have a picture of the composition of vessel in detail. However, observing an(More)
Bioabsorbable drug-eluting coronary stents present a very promising improvement to the common metallic ones solving some of the most important problems of stent implantation: the late restenosis. These stents made of poly-L-lactic acid cause a very subtle acoustic shadow (compared to the metallic ones) making difficult the automatic detection and(More)
The objective of this work is to segment the human left ventricle myocardium (LVM) in contrast echocardiography imaging and thus track it along a cardiac cycle in order to extract quantitative data about heart function. Ultrasound images are hard to work with due to their speckle appearance. To overcome this we report the combination of active contour(More)
ActiveVessel is a new multimedia workstation that enables the visualization, acquisition, and handling of different medical image modalities onand off-line for cardiology purposes. The workstation implements image decompression and browsing, video acquisition, reproduction, and storage for intravascular ultrasound (IVUS) and angiogram (X-ray) analysis. A(More)
In this paper we address the problem of multimodal registration of coronary vessels by developing a 3D parametrical model of vessel trees from computer tomography data and registering it to angiography images during intervention.Thus, the interventionist takes profit from 3D data otherwise only available before the intervention. This facilitates orientation(More)