Detection of Coronary Artery Disease Using Coronary Flow Velocity Reserve by Transthoracic Doppler Echocardiography versus Multidetector Computed Tomography Coronary Angiography: Influence of Calcium Score

Transthoracic Doppler echocardiography and 320-row multidetector CTCA successfully diagnosed significant coronary artery stenosis with high feasibility and accuracy. However, only the diagnostic performance of CTCA was negatively affected by the extent of a patient's coronary artery calcification, and therefore the diagnostic performance of CFVR measurement for detecting coronary artery stenosis surpassed that of CTCA when the calcium score exceeded specified cutoff values.