Background and objective: Non-invasive assessment of coronary artery disease become an important method especially for patients with low to intermediate pretest probability. This work aimed to investigate the correlation between CAC score and SPECT in a group of patients with suspected CAD and its severity.
Methods: The study was conducted at Kobry Alkobba Military hospital, Cairo, Egypt, during the period from January 2018 to March 2019. The study protocol was approved by Department of Cardiology at Zagazig University and Ethical committee of faculty of medicine. An overall 50 patients out of 500 patients who presented with chest pain with low and intermediate pretest probability (PTP) for CAD to outpatient clinic were consecutively included into our study. All study population will undergo coronary artery calcium scoring by computed tomography and myocardial perfusion imaging by SPECT.
Results: The study showed that there is statistically significant data for the relationship between severity of myocardial perfusion imaging and CACS severity. About 37 patients out of 50 had abnormal Ca score (more than 11) found to have abnormal myocardial perfusion imaging from mild to sever affection.
Conclusion: CAC score carries a strong value in predicting adverse events in patients with suspected CAD and myocardial perfusion imaging with mild-moderate perfusion defects and may be useful in risk stratification of these patients and there is statistically significant data for the relationship between severity of myocardial perfusion imaging and CACS severity.
Key words: Coronary Calcium Score, Computed Tomography, Myocardial Perfusion Imaging, Coronary Artery Disease, vessel disease.