A method for calcium quantification by means of CT coronary angiography using 64-multidetector CT: very high correlation with agatston and volume scores |
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Authors: | Bernhard Glodny Bettina Helmel Thomas Trieb Claudia Schenk Bernadette Taferner Verena Unterholzner Alexander Strasak Johannes Petersen |
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Institution: | 1. Department of Radiology, Innsbruck Medical University, Anichstrasse 35, 6020, Innsbruck, Austria 2. Department of Medical Statistics, Informatics and Health Economics, Innsbruck Medical University, Schoepfstra?e 41, A-6020, Innsbruck, Austria
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Abstract: | To find out whether calcium scoring of the coronary arteries (CAC scoring) could be carried out with a CT angiography of the
coronary arteries (CTCA) in a single CT data acquisition. The Agatston and V130 scores for 113 patients were assessed. A calcium
volume score (V600 score) was compiled from the CTCA data sets. Intra- and interobserver correlations were excellent (ρ > 0.97).
The intra- and interobserver repeatability coefficients were extremely low, increasing in magnitude from the V600 score to
the V130 and Agatston scores. The V600 score underestimates the coronary calcium burden. However, it has a linear relation
to the Agatston and V130 scores. Thus, they are predictable from the values of the V600 score. The V600 score shows a linear
relation to the classic CAC scores. Due to its extremely high reliability, the score may be a feasible alternative for classic
CAC scoring methods in order to reduce radiation dosages. |
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Keywords: | Multidetector computed tomography Coronary calcium scoring Coronary artery disease Radiation dosage Cardiac CT Coronary angiography |
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