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European Radiology

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01-04-2011 | Cardiac

CT comparison of visual and computerised quantification of coronary stenosis according to plaque composition

Authors: Doo Kyoung Kang, Nae Jung Im, Soon Mo Park, Hong Seok Lim

Published in: European Radiology | Issue 4/2011

Abstract

Objective

To compare the diagnostic performance of computerised quantification with visual assessment for the detection of significant coronary stenosis using MDCT, and to determine the impact of plaque composition on diagnostic procedure.

Methods

We retrospectively evaluated 1564 coronary segments of 127 patients who underwent 64-slice MDCT and quantitative coronary angiography (QCA). The lesions were analysed with both methods of visual assessment and computerised quantification using an automatic vessel contour detection tool, and the results were compared with the QCA results. Plaques detected with MDCT were classified as calcified, mixed, and non-calcified according to plaque composition.

Results

The sensitivity and PPV of visual assessment (computerised quantification) were 95% (86%) and 76% (81%), respectively. Bland-Altman analysis demonstrated a mean difference of −5.2 ± 21.6% for all lesions, 2.2 ± 23.7 for calcified plaques, and −12.0 ± 17.2% for non-calcified plaques. The correlation coefficients and limits of agreement between CTA and QCA were 0.48 and ±46.5% (0.74 and ±33.7%) in the lesions with calcified plaques (non-calcified plaques).

Conclusions

The computerised quantification decreases the sensitivity due to underestimation of non-calcified plaques compared with visual assessment, and had a poorer correlation and a larger limit of agreement in the lesions with calcified plaque compared with non-calcified plaques.

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Title: CT comparison of visual and computerised quantification of coronary stenosis according to plaque composition
Authors: Doo Kyoung Kang
Nae Jung Im
Soon Mo Park
Hong Seok Lim
Publication date: 01-04-2011
Publisher: Springer-Verlag
Published in: European Radiology / Issue 4/2011
Print ISSN: 0938-7994
Electronic ISSN: 1432-1084
DOI: https://doi.org/10.1007/s00330-010-1970-9

Keynote webinar | Spotlight on medication adherence

Springer Medicine

CT comparison of visual and computerised quantification of coronary stenosis according to plaque composition

Abstract

Objective

Methods

Results

Conclusions

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

Objective

Methods

Results

Conclusions

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