Inter- and intra-observer reproducibility of CT-Leaman score by an independent core lab.

Autor: Revaiah PC; CORRIB Research Centre for Advanced Imaging and Core Laboratory, University of Galway, Galway, Ireland., Kageyama S; CORRIB Research Centre for Advanced Imaging and Core Laboratory, University of Galway, Galway, Ireland., Masuda S; CORRIB Research Centre for Advanced Imaging and Core Laboratory, University of Galway, Galway, Ireland., Ninomiya K; CORRIB Research Centre for Advanced Imaging and Core Laboratory, University of Galway, Galway, Ireland., Kotoku N; CORRIB Research Centre for Advanced Imaging and Core Laboratory, University of Galway, Galway, Ireland., Wang B; CORRIB Research Centre for Advanced Imaging and Core Laboratory, University of Galway, Galway, Ireland., He X; CORRIB Research Centre for Advanced Imaging and Core Laboratory, University of Galway, Galway, Ireland., Tsai TY; CORRIB Research Centre for Advanced Imaging and Core Laboratory, University of Galway, Galway, Ireland., Garg S; Department of Cardiology, Royal Blackburn Hospital, Blackburn, UK., Mushtaq S; Department of Perioperative Cardiology and Cardiovascular Imaging, Centro Cardiologico Monzino IRCCS, Milan, Italy., Reiber JHC; Department of Radiology, Leiden University Medical Center, Leiden, The Netherlands., Leaman DM; Milton Hershey Medical Center, Penn State Heart and Vascular Institute, Hershey, PA, USA., Bax JJ; Department of Cardiology, Leiden University Medical Center, Leiden, The Netherlands., Budoff MJ; Department of Medicine, Lundquist Institute at Harbor-UCLA, Torrance, CA, USA., Andreini D; Division of Cardiology and Cardiac Imaging, IRCCS Galeazzi Sant'Ambrogio, Milan, Italy.; Department of Biomedical and Clinical Sciences, University of Milan, Milan, Italy., Serruys PW; CORRIB Research Centre for Advanced Imaging and Core Laboratory, University of Galway, Galway, Ireland. patrick.serruys@nuigalway.ie.; Interventional Cardiology, Cardiovascular Research Centre for Advanced Imaging and Core Laboratory (CORRIB) (Cardiovascular Imaging and Atherosclerosis), University of Galway, University Road, Galway, H91 TK33, Ireland. patrick.serruys@nuigalway.ie., Onuma Y; CORRIB Research Centre for Advanced Imaging and Core Laboratory, University of Galway, Galway, Ireland. yoshinobuonuma@gmail.com.; Interventional Medicine and Innovation, Cardiovascular Research Centre for Advanced Imaging and Core Lab (CORRIB) Research Centre, Investigator of the Science Foundation of Ireland (SFI), University of Galway, University Road, Galway, H91 TK33, Ireland. yoshinobuonuma@gmail.com.
Jazyk: angličtina
Zdroj: The international journal of cardiovascular imaging [Int J Cardiovasc Imaging] 2023 Nov; Vol. 39 (11), pp. 2269-2277. Date of Electronic Publication: 2023 Oct 24.
DOI: 10.1007/s10554-023-02962-3
Abstrakt: To assess the reproducibility of CT-based Leaman score (CT-LeSc). CT-LeSc can non-invasively quantify total coronary atherosclerotic burden and is an independent long-term predictor of cardiac events. Its calculation however relies on the subjective assessment of lesions using coronary computed tomography angiography and therefore is subject to intra- and inter-observer variability. Inter-observer reproducibility was assessed by calculating the CT-LeSc in 50 patients randomly selected from the SYNTAX III REVOLUTION and ABSORB trials by two separate teams, each made up of two cardiologists, who reported results by consensus. For intra-observer reproducibility, the CT-LeSc was calculated in same 50 patients on two occasions eight weeks apart, by the same team of two cardiologists. The level of agreement was measured by the weighted kappa statistic, with intra- and inter-observer variability used to evaluate the CT-LeSc's reproducibility. The variables evaluated by weighted kappa statistics were total number of lesions; number of calcified lesions; number of non-calcified lesions; number of mixed lesions; number of obstructive lesions; number of non-obstructive lesions; and the total CT-LeSc in increments of ten and five. During assessment of inter-observer variability the mean ± standard deviation (SD) CT-LeSc calculated by the first and second team was 15.36 ± 5.57 versus 15.24 ± 5.16. The mean of the differences (precision) was 0.97, with a SD (accuracy) 1.17. The inter-observer variability was lowest for Leaman score in increments of five (weighted kappa 0.93), and highest for the total number of calcified lesions (weighted kappa 0.66). During assessment of intra-observer variability, the mean ± SD CT-LeSc were 16.61 ± 5.28 versus 16.82 ± 5.55. The mean ± SD of the differences was 1.28 ± 1.02. The intra-observer variability was the lowest for Leaman score in increments of five (weighted kappa 0.93), and the highest for the total number of lesions and calcified lesions (weighted kappa 0.65). CT-LeSc has substantial to near-perfect agreement for reproducibility.
(© 2023. The Author(s), under exclusive licence to Springer Nature B.V.)
Databáze: MEDLINE
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