Impact of PVCs noted during coronary calcium scan on image quality and accuracy in subsequent coronary dual-source CT angiography
| Autor: | Birgit Strozyk, Martin Niedermayer, Wolfgang Eicher, Birgit Senft, Maria Sinzig, Klaus A. Hausegger, Thomas Kau |
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| Rok vydání: | 2010 |
| Předmět: |
Adult
Male medicine.medical_specialty Image quality Coronary Angiography Electrocardiography Heart Rate Predictive Value of Tests Internal medicine medicine Humans Radiology Nuclear Medicine and imaging Sinus rhythm Prospective Studies Prospective cohort study Cardiac imaging Aged Aged 80 and over Chi-Square Distribution medicine.diagnostic_test business.industry Coronary Stenosis Calcinosis Discriminant Analysis Middle Aged Ventricular Premature Complexes Coronary Calcium Score Austria Case-Control Studies Predictive value of tests Angiography Cardiology Radiographic Image Interpretation Computer-Assisted Female Artifacts Tomography X-Ray Computed Cardiology and Cardiovascular Medicine business |
| Zdroj: | The International Journal of Cardiovascular Imaging. 27:601-610 |
| ISSN: | 1573-0743 1569-5794 |
| DOI: | 10.1007/s10554-010-9699-8 |
| Popis: | The purpose of this study was to investigate the impact of the presence of one or more premature ventricular contractions (PVCs) during coronary calcium score scan (CS) on image quality and accuracy of subsequent dual-source coronary CT angiography (DS CCTA). Fifty-three out of 502 patients showed one or more PVCs during CS and built the study group. Sixty consecutively registered patients with sinus rhythm formed the control group. Two independent, blinded readers classified 1,723 coronary artery segments as being of diagnostic or non-diagnostic image quality. All segments with diagnostic image quality were assessed for the presence for significant coronary artery stenosis. Accuracy was calculated using conventional angiography as standard of reference. The percentage of DS CCTA data sets with diagnostic image quality was significantly lower in the study group (79.2%) compared to the control group (90.6%, P < 0.05). The rate of coronary segment with diagnostic image quality was highly significant lower in the study group (89.5%; n = 723/808) compared to the control group (99.4%; n = 908/915; P < 0.001). However, accuracy did not differ in both groups. Significant correlation between non-diagnostic image quality and mean HR was only found in the study group (P = 0.019). The presence of one or more PVCs during CS does not affect accuracy but impairs image quality of subsequent DS CCTA. Mean HR is a predictor of non-diagnostic data sets only in the study group, suggesting more aggressive HR control could be beneficial. |
| Databáze: | OpenAIRE |
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