Carlos E. Rochitte

Learn More
BACKGROUND Tagged MRI of the heart is difficult to implement clinically because of the lack of fast analytical techniques. We investigated the accuracy of harmonic phase (HARP) imaging for rapid quantification of myocardial strains and for detailed analysis of left ventricular (LV) function during dobutamine stimulation. METHODS AND RESULTS Tagged MRI was(More)
After reading this article and taking the test, the reader will be able to: Ⅲ Describe the technique of delayed enhancement myocar-dial MR imaging. Ⅲ Discuss the use of delayed enhancement MR imaging in ischemic myocardial disease. Ⅲ Identify the features of nonischemic myocardial diseases at delayed enhancement MR imaging. Use of magnetic resonance (MR)(More)
Imaging delayed hyperenhancement of myocardial infarction is most commonly performed using an inversion recovery (IR) prepared 2D breathhold segmented k-space gradient echo (FGRE) sequence. Since only one slice is acquired per breathhold in this technique, 12-16 successive breathholds are required for complete anatomical coverage of the heart. This prolongs(More)
OBJECTIVES The goal of this study was to characterize detailed transmural left ventricular (LV) function at rest and during dobutamine stimulation in subendocardial and transmural experimental infarcts. BACKGROUND The relation between segmental LV function and the transmural extent of myocardial necrosis is complex. However, its detailed understanding is(More)
High serum phosphorus levels have been associated with mortality and cardiovascular events in patients with chronic kidney disease and in the general population. In addition, high phosphorus levels have been shown to induce vascular calcification and endothelial dysfunction in vitro. The aim of this study was to evaluate the relation of phosphorus and(More)
BACKGROUND Although there have been recent advances in echocardiography, many studies remain suboptimal due to poor image quality and unclear blood-myocardium border. We developed a novel image processing technique, cardiac variability imaging (CVI), based on the variance of pixel intensity values during passage of ultrasound microbubble contrast into the(More)
Multislice computed tomography (MSCT) for the noninvasive detection of coronary artery stenoses is a promising candidate for widespread clinical application because of its non-invasive nature and high sensitivity and negative predictive value as found in several previous studies using 16 to 64 simultaneous detector rows. A multi-centre study of CT coronary(More)
BACKGROUND Non-invasive detection of atherosclerosis is critical for its prevention. OBJECTIVE To correlate non-invasively detectable indicators of coronary atherosclerosis, or Coronary Artery Disease (i.e., classical risk factors, hs-CRP test results, carotid intima-media thickness, endothelial function, ankle-brachial index and calcium score by computed(More)
BACKGROUND Chagas' heart disease is an important public health problem in South America. Several aspects of the pathogenesis are not fully understood, especially in its subclinical phases. On pathology Chagas' heart disease is characterized by chronic myocardial inflammation and extensive myocardial fibrosis. The latter has also been demonstrated by late(More)
This manuscript describes a rare situation where after acute myocardial infarction a patient underwent cardiovascular magnetic resonance (CMR), which identified a previously undiagnosed rupture of the free wall of the LV, leading to successful surgical management.