Davies, AG, Conway, D, Reid, S et al. (2 more authors) (2013) Assessment of coronary stent deployment using computer enhanced x-ray images-validation against intravascular ultrasound and best practice recommendations. Catheterization and Cardiovascular Interventions, 81 (3). 419 - 427. ISSN 1522-1946
Abstract
Objective: To investigate the accuracy of stent measurements using coronary x-ray angiograms with a computer based stent enhancement algorithm applied (StentBoost, SB). To derive recommendations for best practice when using such systems. Background: Computer enhancement algorithms allow better visualization of intracoronary stents to assist in ensuring adequate stent deployment. Factors that affect the accuracy of measurements taken on such systems are yet to be fully understood. Methods: We analysed stent deployment of 43 stents in 33 patients measuring minimum stent diameter and cross sectional area (CSA) using intravascular ultrasound (IVUS), SB enhanced x-ray images, and quantitative coronary angiography (QCA). We investigated if the use of two projections and method of calibration influenced correlation between IVUS and SB measurements. Results: Using two views and performing calibration via the guide catheter improved agreement between SB and IVUS measurements. For example, minimum stent diameter assessed with SB using one view and balloon markers for calibration produced a correlation coefficient, r, of 0.21, whereas using two views and the guide catheter for calibration increased agreement to r = 0.62. Relative measures of stent deployment, such as the ratio of minimum to maximum CSA, produced good correlation between IVUS and SB (r = 0.74). Conclusions: When using the SB system, two projection angles should be used to image the stent. For absolute measurements, the guide catheter should be used for calibration purposes. Relative measures of stent size, which are probably sufficient for assessment of deployment, also give good agreement with similar measures on IVUS, and require no calibration.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | (c) 2013, owner. This is an author produced version of a paper published in Catheterization and Cardiovascular Interventions. Uploaded in accordance with the publisher's self-archiving policy |
Keywords: | Angioplasty, balloon, coronary; Coronary angiography; Coronary artery disease; Coronary vessels; Follow-up studies; Humans; Image processing, computer-assisted; Practice guidelines as topic; Prospective studies; Reproducibility of results; Stents; Ultrasonography, interventional |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Medicine and Health (Leeds) > School of Medicine (Leeds) > Leeds Institute of Genetics, Health and Therapeutics (LIGHT) > Academic Unit of Medical Physics (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 11 Mar 2014 11:33 |
Last Modified: | 14 Mar 2014 12:07 |
Published Version: | http://dx.doi.org/10.1002/ccd.23366 |
Status: | Published |
Publisher: | Wiley |
Identification Number: | 10.1002/ccd.23366 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:77971 |