Comparison of Diagnostic Accuracy of CT Derived Fractional Flow Reserve for Predicting Revascularization.

Purpose: CT-derived fractional-flow-reserve (FFR) is recommended for determining the indication of revascularization. Consensus on optimal fractional-flow-reserve (FFR) measurement methods and lesions is lacking. To investigate the diagnostic accuracy of FFR measurement methods for predicting revascularization and factors affecting FFR measurement methods.

Impact of Heterogeneous Plaque Deposition on Computed Tomography Derived Fractional Flow Reserve.

L/P ratio, which indicates the proportion of lumen volume to plaque volume of the vessel, is lower in lesion than in per-lesion (RCA, 0.9 vs. 7.

Impact of Advanced Extravascular Calcified Plaque on the Assessment of Coronary Stenosis Severity.

Coronary computed tomography angiography (CCTA) and CT-derived fractional flow reserve (FFRCT) provide high diagnostic accuracy for coronary artery disease (CAD), consistent with invasive coronary angiography (ICA), the gold standard diagnostic technique. The presence of calcified components, however, complicates the interpretation of coronary stenosis severity. We present a case where there was a discrepant assessment of coronary stenosis severity between CCTA/FFRCT (indicating significant obstructive CAD) and ICA (showing no apparent obstructive CAD).

Impact of vessel morphology on CT-derived fractional-flow-reserve in non-obstructive coronary artery disease in right coronary artery.

Objectives: Computed tomography (CT)-derived fractional flow reserve (FFR) decreases continuously from proximal to distal segments of the vessel due to the influence of various factors even in non-obstructive coronary artery disease (NOCAD). It is known that FFR is dependent on vessel-length, but the relationship with other vessel morphologies remains to be explained.

Purpose: To investigate morphological aspects of the vessels that influence FFR in NOCAD in the right coronary artery (RCA).

Impact of Pulmonary Artery-to-Aorta Ratio by CT on the Clinical Outcome in Heart Failure.

Introduction: Previous studies have indicated that the ratio of pulmonary artery (PA) to ascending aorta (Ao) diameter as measured by computed tomography (PA/Ao) is strongly associated with pulmonary artery pressure. However, the clinical significance of PA/Ao in heart failure (HF) has not been fully characterized. We sought to investigate the prognostic impact of PA/Ao in HF.