Abstract Coronary computed tomography angiography (CCTA) is an effective noninvasive method for detecting atherosclerotic disease, especially in symptomatic patients with low-to-moderate disease probability. Despite good accuracy in detecting obstructions, its relationship with functional lesion severity is limited. For a more accurate assessment, anatomical evaluation can be associated with myocardial computed tomography perfusion and fractional flow reserve derived from CCTA (FFRct). Myocardial perfusion computed tomography identifies areas of ischemia. FFRct, which assesses the hemodynamic significance of stenoses, has shown high accuracy […]

Abstract Background: Myocardial perfusion scintigraphy is an important non-invasive method for diagnosing coronary artery disease, but it is not free from artifacts. Performing the combined supine-prone protocol can bring benefits to images with artifacts from the standard protocol in the supine position. The lack of unanimity in the implementation of the combined protocol may be related to the lack of objective data for the prior selection of patients. Objective: To evaluate which anthropometric profiles may be associated with a greater […]

Introduction The microvascular integrity of the myocardial bed can be assessed by coronary flow reserve (CFR), which is a calculation of the ratio between the absolute coronary blood flow under vasodilator stress and under resting conditions. This measurement is capable of estimating vasomotor dysfunction, and it reflects the hemodynamic effect of focal, diffuse, or small-vessel coronary disease. Currently, it is possible to measure CFR invasively using the techniques of thermodilution or intracoronary Doppler and through non-invasive methods, such as echocardiography, […]

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Abstract To systematically assess the literature on the applicability of myocardial perfusion scintigraphy with phase analysis in the investigation of cardiac dyssynchrony and in the selection of patients for cardiac resynchronization therapy (CRT), manuscripts published on the PubMed database over the past five years have been reviewed. The following MeSH terms were used: heart failure, left ventricular, dyssynchrony, gated-spect, phase analysis and resynchronization therapy. Altogether, 99 manuscripts were included for discussion. Speckle-tracking echocardiography is still widely used in the evaluation […]