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QCA, IVUS and OCT in interventional cardiology in 2011
2011
Cardiovascular Diagnosis and Therapy
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Over the past 30 years, quantitative coronary arteriography (QCA) has been used extensively as an objective and reproducible tool in clinical research to assess changes in vessel dimensions as a result ...
From the 3D QCA the selection of the optimal angiographic views can also be facilitated. ...
Acknowledgements Disclosure: The authors declare no conflict of interest. ...
doi:10.3978/j.issn.2223-3652.2011.09.03
pmid:24282685
pmcid:PMC3839131
fatcat:2gdxwzhigre67mw6d77q7oj6ge
Accurate and reproducible reconstruction of coronary arteries and endothelial shear stress calculation using 3D OCT: Comparative study to 3D IVUS and 3D QCA
2015
Atherosclerosis
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Methods-Results: 35 coronary artery segments derived from 30 patients were reconstructed in 3D space using 3D OCT. 3D OCT was validated against 3D IVUS and 3D QCA. ...
There was a very high agreement between 3D OCT vs. 3D IVUS and 3D OCT vs. 3D QCA in terms of total reconstructed artery length and volume, as well as in terms of segmental morphometric and ESS metrics ...
A detailed assessment of blood flow properties in coronary arteries requires accurate 3D imaging of the arterial lumen. ...
doi:10.1016/j.atherosclerosis.2015.04.011
pmid:25932791
fatcat:v6yw2wwvgrcsfonbwjrx7ypmji
Fusion of 3D QCA and IVUS/OCT
2011
The International Journal of Cardiovascular Imaging
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In this work a new and robust three-dimensional (3D) segmentation and registration approach is presented and validated. ...
The approach starts with standard QCA of the vessel of interest in the two angiographic views (either biplane or two monoplane views). ...
Figure 2a and b show the segment of interest in the LAD and its extracted 2D contours, superimposed on the two angiographic views. ...
doi:10.1007/s10554-011-9809-2
pmid:21264684
pmcid:PMC3078305
fatcat:p6ywzeqb45eanhdsyglyw2wenu
Optimized Computer-Aided Segmentation and Three-Dimensional Reconstruction Using Intracoronary Optical Coherence Tomography
2018
IEEE journal of biomedical and health informatics
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[19] used 2D cross sectional DICOM OCT images to segment the lumen border and to detect stent struts, and were as accurate and robust as manual segmentation performed by experts. Ughi et al. ...
anatomy of the coronary arteries. ...
doi:10.1109/jbhi.2017.2762520
pmid:29989976
pmcid:PMC6042877
fatcat:fm3jiccjqrbx7hyylfee7yfcam
A graph-based approach for spatio-temporal segmentation of coronary arteries in X-ray angiographic sequences
2016
Computers in Biology and Medicine
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The segmentation and tracking of coronary arteries (CAs) are critical steps for the computation of biophysical measurements in pediatric interventional cardiology. ...
In addition, the proposed method returned a Dice index of 70% in segmenting and tracking right coronary arteries and circumflex arteries. $ This work was supported by the Fonds de recherche du Quebec Nature ...
This research was funded by the Fonds Figure 1 : 1 Overview of the segmentation of a coronary artery in 2D+time: Segmenting and tracking the right coronary artery (highlighted in yellow) in an angiographic ...
doi:10.1016/j.compbiomed.2016.10.001
pmid:27744180
fatcat:axlrqgvvlref3msjnvgkdf4d2q
Clinical expert consensus document on quantitative coronary angiography from the Japanese Association of Cardiovascular Intervention and Therapeutics
2020
Cardiovascular Intervention and Therapeutics
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Quantitative coronary angiography (QCA) remains to play an important role in clinical trials and post-marketing surveillance related to the safety and efficacy of new PCI devices. ...
In this document, the current standard methodology of QCA is summarized. In addition, its history, recent development and future perspectives are also reviewed. ...
Following the determination of a start point and an end point in the image of enhanced coronary artery, a vessel pathline is created. ...
doi:10.1007/s12928-020-00653-7
pmid:32125622
fatcat:el7gebeayfdzlkesstudak4nju
The Evolution of Data Fusion Methodologies Developed to Reconstruct Coronary Artery Geometry From Intravascular Imaging and Coronary Angiography Data: A Comprehensive Review
2020
Frontiers in Cardiovascular Medicine
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However, a significant limitation of these novel imaging catheters is that they provide two-dimensional (2D) visualization of the lumen and vessel wall and thus they cannot portray vessel geometry and ...
These are able to off-line process and fuse intravascular imaging data with X-ray or computed tomography coronary angiography (CTCA) to reconstruct coronary artery anatomy. ...
FIGURE 3 | 3 Reconstruction of a right coronary artery from IVUS and angiographic data with the lumen surface portrayed in a red color and the outer vessel wall in a semi-transparent fashion (A). ...
doi:10.3389/fcvm.2020.00033
pmid:32296713
pmcid:PMC7136420
fatcat:pwzpdrazhrcvrpvc2gxeyvrqny
Quantitative evaluation and comparison of coronary artery characteristics by 3D coronary volume reconstruction
2021
Scientific Reports
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A total of 1105 coronary segments were analysed using QAngio XA 3D (Research Edition, Medis medical imaging systems, Leiden, The Netherlands). ...
This included 42 patients with angiographically normal coronary arteries, 36 diabetic patients with unobstructed coronaries, and 53 patients with abnormal coronary dilatation (aneurysm and ectasia). ...
Acknowledgements We thank all the staff working in the cardiac catheterisation laboratories and CCU at Bristol Heart Institute for their commitment to this study. ...
doi:10.1038/s41598-020-80928-4
pmid:33441962
fatcat:azqhr2junjfizpwodqttxnhrnm
Segmentation and Reconstruction Techniques for Modeling of Blood Vessel
2017
International Journal of Computer Applications
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This paper gives extensive literature survey on segmentation and reconstruction techniques for artery modeling that uses various image modalities such as X Ray Angiography, Magnetic Resonance Angiography ...
Number of researchers at different universities as well as medical device manufacturers are working in this field for better understanding of the vascular characteristics. ...
In computer assisted diagnosis of coronary artery diseases, vascular structure identification and matching in sequential angiographic images obtained at different angles have great significance. ...
doi:10.5120/ijca2017913392
fatcat:6jyulin3sfadjgdjddm2xa23hi
Fractional flow reserve for coronary stenosis assessment derived from fusion of intravascular ultrasound and X-ray angiography
2021
Quantitative Imaging in Medicine and Surgery
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This study aimed to develop a novel method to estimate fractional flow reserve (FFR) value for determining the functional significance of coronary artery disease through the fusion of IVUS and X-ray angiographic ...
Intravascular ultrasound (IVUS) provides good insight into lumen boundary and plaques; however, it is still difficult to detect functionally significant stenosis from IVUS images for the guidance of coronary ...
was developed to segment the lumen of 2D IVUS images automatically (11) . ...
doi:10.21037/qims-20-1324
pmid:34737922
pmcid:PMC8511737
fatcat:zqwxkxsgafch7dprkbhvehkqpa
Point-Cloud Method for Automated 3D Coronary Tree Reconstruction from Multiple Non-Simultaneous Angiographic Projections
2019
IEEE Transactions on Medical Imaging
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X-ray angiography is the most commonly used imaging modality for the detection of coronary stenoses due to its high spatial and temporal resolution of lumen contour and its utility to guide coronary interventions ...
This could be addressed by the 3D reconstruction of the coronary arterial (CA) tree. ...
ACKNOWLEDGMENT The authors acknowledge the use of services and facilities of the Oxford Acute Vascular Imaging Centre (AVIC) and the Institute of Biomedical Engineering (IBME), University of Oxford, United ...
doi:10.1109/tmi.2019.2944092
pmid:31613752
fatcat:a7hdsrzxujhk5jicaf4jkc7m54
Cardiovascular magnetic resonance profiling of coronary atherosclerosis: vessel wall remodelling and related myocardial blood flow alterations
2014
European Heart Journal-Cardiovascular Imaging
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level of epicardial coronary and myocardial blood flow in patients. --- Keywords Magnetic resonance imaging † Coronary atherosclerosis † Vessel wall imaging † Coronary flow reserve † Myocardial blood ...
The combined CMR protocol consisted of the following imaging modules at rest: 3D vessel wall imaging and flow measurement of the proximal right coronary artery (RCA), myocardial T2*, and first-pass perfusion ...
robust. ...
doi:10.1093/ehjci/jeu148
pmid:25104810
fatcat:wkjwtby3rbeutedqf5p7ym2yl4
Correction of Stent Distortion and Overhanging Stent Struts during Left Main Bifurcation Stenting by Selective Distal Stent Cell Re-Wiring: A Novel Guidewire Approach
2015
Acta Cardiologica Sinica
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main coronary artery stenting. ...
We herein present 2 cases, in which optical frequency domain imaging and intravascular ultrasound effectively revealed stent malapposition and overhanging struts inside the ostium of the SB following left ...
(B) Good angiographic results after deployment of a Nobori 3.5 mm´24 in left main coronary artery crossed to proximal LAD. ...
pmid:27122906
pmcid:PMC4804810
fatcat:lrukutv4ofg47iwoc7hc4eqwmq
Finding Similar 2D X-Ray Coronary Angiograms
[chapter]
2012
Lecture Notes in Computer Science
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In this paper, we show how these visual features can be automatically extracted from coronary artery images and used for finding similar coronary angiograms from a database. ...
In clinical practice, physicians often exploit previously observed patterns in coronary angiograms from similar patients to quickly assess the state of the disease in a current patient. ...
While the majority of the work is on 3D CT angiography data, relying on a good 3D vessel tree model and a robust 2D-3D shape alignment algorithm, [1, 15] , junction detection in 2D X-ray angiography has ...
doi:10.1007/978-3-642-33454-2_62
fatcat:i6zdvsp6arbqpf66t6r5wslj6u
Accuracy and reproducibility of fast fractional flow reserve computation from invasive coronary angiography
2017
The International Journal of Cardiovascular Imaging
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In a small number of patients we showed good accuracy of three QFR techniques (aQFR, cQFR and fQFR) to predict invasive FFR. ...
angiography QCA Quantitative coronary angiography QFR Quantitative flow ratio TIMI Thrombolysis in myocardial infarction fQFR models which showed good correlation with invasively measured FFR and good ...
, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. ...
doi:10.1007/s10554-017-1190-3
pmid:28642995
pmcid:PMC5539270
fatcat:rkvhhmxmbvf6diio4lgjcbwera
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