Nuno Bettencourt

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OBJECTIVES This study sought to compare the diagnostic performance of a multidetector computed tomography (MDCT) integrated protocol (IP) including coronary angiography (CTA) and stress-rest perfusion (CTP) with cardiac magnetic resonance myocardial perfusion imaging (CMR-Perf) for detection of functionally significant coronary artery disease (CAD). (More)
BACKGROUND Cardiovascular Magnetic Resonance myocardial feature tracking (CMR-FT) is a quantitative technique tracking tissue voxel motion on standard steady-state free precession (SSFP) cine images to assess ventricular myocardial deformation. The importance of left atrial (LA) deformation assessment is increasingly recognized and can be assessed with(More)
Hypertrophic scarring occurs frequently in the trunk and extremities, and sporadically in other areas even under favorable circumstances. Unfortunately, the existing methods of scar manipulation have not been effective in preventing these unfavorable scars. Established hypertrophic scars have been treated by Anderson and Parrish, Alster, and others using(More)
BACKGROUND Multislice computed tomography (MSCT) has shown high negative predictive value in ruling out obstructive coronary artery disease. Preliminary studies in patients with valvular heart disease (VHD) have demonstrated the potential of MSCT angiography (CTA) in such patients, precluding need for invasive angiography (XA). However, larger prospectively(More)
INTRODUCTION Smoking is a well-known cardiovascular risk factor. Despite this, smokers seem to have a better prognosis after an acute coronary syndrome (ACS). It has been suggested that the thrombogenicity of smoke could explain this phenomenon; by causing occlusions or sub-occlusions in minor coronary lesions and leading to earlier ACS in terms of coronary(More)
INTRODUCTION Acute coronary syndromes (ACS) in young women are relatively unusual. This subgroup of patients presents a premature risk of death and disability, with significant social repercussions. OBJECTIVE/METHODOLOGY This retrospective study was undertaken to define risk factors, symptoms and signs at presentation, electrocardiographic and(More)
In this work, we present a technique to semi-automatically quantify the epicardial fat in non-contrasted computed tomography (CT) images. The epicardial fat is very close to the pericardial fat, being separated only by the pericardium that appears in the image as a very thin line, which is hard to detect. Therefore, an algorithm that uses the anatomy of the(More)
BACKGROUND & AIMS Cardiac dysfunction has been described in patients with cirrhosis. Conventional echocardiographic methods are frequently unable to detect abnormalities at rest and have limitations. We aimed to evaluate cardiac function in cirrhosis patients assessing: (i) left ventricular systolic function using speckle-tracking imaging; (ii) diastolic(More)
OBJECTIVES This study sought to compare computed tomography delayed enhancement (CTDE) against cardiac magnetic resonance (CMR) late gadolinium enhancement (LGE) for detection of ischemic scar and to test the additive value of CTDE as part of a comprehensive multidetector computed tomography (MDCT) stress-rest protocol including computed tomography(More)
INTRODUCTION Clinical depression is associated with poor compliance in risk reduction recommendations and has been suggested as an independent risk factor for increased postmyocardial infarction morbidity and mortality. AIM To determine the prevalence of depressive symptoms, their main determinants and their influence on clinical evolution in acute(More)