Niall Keenan

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This paper presents a novel approach to shape extraction and interpretation in 4-D cardiac magnetic resonance imaging data. Statistical modeling of spatiotemporal interlandmark relationships is performed to enable the decomposition of global shape constraints and subsequently of the image analysis tasks. The introduced descriptors furthermore provide(More)
Intracoronary testosterone infusions induce coronary vasodilatation and increase coronary blood flow. Longer term testosterone supplementation favorably affected signs of myocardial ischemia in men with low plasma testosterone and coronary heart disease. However, the effects on myocardial perfusion are unknown. Effects of longer term testosterone treatment(More)
BACKGROUND Multi-contrast weighted cardiovascular magnetic resonance (CMR) allows detailed plaque characterisation and assessment of plaque vulnerability. The aim of this preliminary study was to show the potential of Ultra-short Echo Time (UTE) subtraction MR in detecting calcification. METHODS 14 ex-vivo human carotid arteries were scanned using CMR and(More)
BACKGROUND There is recent evidence suggesting that rosiglitazone increases death from cardiovascular causes. We investigated the direct effect of this drug on atheroma using 3D carotid cardiovascular magnetic resonance. RESULTS A randomized, placebo-controlled, double-blind study was performed to evaluate the effect of rosiglitazone treatment on carotid(More)
BACKGROUND Cardiac phenotypes, such as left ventricular (LV) mass, demonstrate high heritability although most genes associated with these complex traits remain unidentified. Genome-wide association studies (GWAS) have relied on conventional 2D cardiovascular magnetic resonance (CMR) as the gold-standard for phenotyping. However this technique is(More)