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DATASET RELATED TO THE ARTICLE "Interpretability of coronary CT angiography performed with a novel whole-heart coverage high-definition CT scanner in 300 consecutive patients with coronary artery bypass grafts"

<p>This record contains raw data related to the article: Interpretability of coronary CT angiography performed with a novel wholeheart</p> <p>coverage high-definition CT scanner in 300 consecutive patients with</p> <p>coronary artery bypass grafts&#39;</p> <p>Aims: Coronary CT angiography (CCTA) is an accurate non-invasive tool for the evaluation of coronary artery</p> <p>bypass graft (CABG). However, inability to sustain a long breath-hold, high heart rate (HR) and atrial fibrillation</p> <p>may affect image quality. Moreover, radiation exposure is still a matter of some concern. A scanner combining</p> <p>0.23-mm spatial resolution, new iterative reconstruction and fast gantry rotation time has been recently introduced</p> <p>in the clinical field. The aims of our study were to evaluate interpretability, radiation exposure and</p> <p>diagnostic accuracy of CCTA performed with the latest generation of cardiac-CT scanners compared to invasive</p> <p>coronary angiography (ICA) in the assessment of bypass grafts, and non-grafted and post-anastomotic native</p> <p>coronary arteries.</p> <p>Methods and results: We prospectively enrolled 300 patients undergoing clinically indicated CCTA with a 16-cm</p> <p>z-axis coverage, 256-detector rows, and 0.28-sec gantry rotation time scanner. Coronary artery and graft interpretability,</p> <p>image quality and effective dose (ED) were assessed in all patients and diagnostic accuracy was</p> <p>evaluated in a subgroup of 100 patients who underwent ICA.</p> <p>Mean HR during the scan was 69.6 &plusmn; 10.8. Sinus rhythm was present in 118 patients with HR &lt; 75 bpm</p> <p>and in 112 patients with HR&ge;75 bpm, while 70 patients had atrial fibrillation. CABG interpretability was</p> <p>100%. Compared to ICA, CCTA was able to correctly detecting occlusions or significant stenoses of all CABG</p> <p>segments. Overall interpretability of native coronary segments was 95.6%. Sensitivity, specificity, positive</p> <p>predictive value, negative predictive value and accuracy of coronary arteries were 98.3%, 97.4%, 93.1%, 99.3%</p> <p>and 96.5%, respectively. The diagnostic accuracy in a patient based analysis was 95.2%. Mean ED was</p> <p>3.14 &plusmn; 1.7 mSv.</p> <p>Conclusions: The novel whole-heart coverage CT scanner allows to evaluating CABG and native coronary arteries</p> <p>with excellent interpretability and low radiation exposure even in the presence of unfavorable heart rhythm.</p>