Methods Patients clinically referred for treadmill stress SPECT for the evaluation of known or suspected CAD were prospectively enrolled across 4 centers. After rest Tc99m SPECT imaging, patients underwent resting cine CMR. In-room stress was then performed using an MR-compatible treadmill with continuous 12-lead ECG monitoring and the Bruce exercise protocol. At peak stress, Tc99m was injected...

Thermoluminescent dosimetry was used to measure the radiation exposure to the skin, thyroid and gonads in 50 consecutive pediatric patients undergoing cardiac catheterization and angiocardiography using cine photofluorography. Average exposures were 17.1 R to the skin, 2.3 R to the thyroid and 0.1 R to the gonads. Fluoroscopy accounted for approximately 80% of the skin and thyroid exposure and ...

We propose an automatic approach to aorta segmentation in axial cardiac cine MRI. The segmentation task is formulated as a probabilistic inference problem, seeking for the most probable constellation of aorta locations and shapes in time. To this end, a graphical model is developed that implements the mutual dependencies of the aorta parameters along the cine sequence. Our approach integrates e...

Este artículo se refiere al rol de los cines arte y ensayo en contextos crisis exhibición. Se focaliza, particular, la gestión del Cine Arte Normandie entre 1982 2001 frente a dos grandes exhibición cinematográfica Chile – década 1980, durante dictadura militar, 1990, luego retorno democracia que relacionaron tanto con el contexto local como las dinámicas industria global. El analiza particular...

It has become more apparent in recent years that increasing numbers of children continue to have obstructive sleep apnea despite previous removal of the tonsils and adenoids. This occurs not only in children in “at-risk” populations, such as those with Down syndrome and obesity, but also in otherwise “normal” children. Sleep cine magnetic resonance imaging (MRI) provides a high-resolution exami...

BACKGROUND Cine cardiovascular magnetic resonance (CMR) is challenging in patients who cannot perform repeated breath holds. Real-time, free-breathing acquisition is an alternative, but image quality is typically inferior. There is a clinical need for techniques that achieve similar image quality to the segmented cine using a free breathing acquisition. Previously, high quality retrospectively ...

A34-year-old woman was referred to our department for evaluation of her known congenital heart disease (tricuspid atresia [TA] with an atrial septal defect [ASD] and a ventricular septal defect [VSD]). She had refused surgery in her adolescence and had since been followed up medically. A contrast enhancement CT examination using multidetector CT was performed by use of 2 methods.1–3 Figures 1 a...

BACKGROUND In patients with the preexcitation syndrome who are undergoing transcatheter or surgical ablation, accurate localization of accessory pathways is critical. Because preexcitation is known to alter ventricular activation sequence and result in focal areas with presystolic contraction, we investigated whether phase analysis applied to two-dimensional echocardiographic cine loops objecti...