2006
DOI: 10.1590/s0066-782x2006001800005
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Avaliação tardia de endopróteses coronarianas com sirolimus: comparação da tomografia computadorizada por múltiplos detectores com a angiografia quantitativa e o ultra-som intracoronariano

Abstract: objective: To assess the performance of multidetector computed tomography in determining late clinical outcomes of patients undergoing sirolimus-eluting stent implantation.Methods: Thirty patients, successfully submitted to sirolimus-eluting stent implantation for more than six months, were selected to participate in the study. All underwent invasive angiography and intravascular ultrasound following CT angiography using iodinated contrast medium at a dose of 1.5 ml/kg. Results:Mean proximal reference diameter… Show more

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Cited by 2 publications
(2 citation statements)
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“…Even though in the final table this indication has been ranked as IIb, I believe that, in the symptomatic patient, it could potentially be considered as IIa level, given the tremendous technological advances offered by 64-slice CT scanners 4 . This discussion emphasizes the importance of the quantitative data presented by Pinto et al 3 .…”
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confidence: 65%
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“…Even though in the final table this indication has been ranked as IIb, I believe that, in the symptomatic patient, it could potentially be considered as IIa level, given the tremendous technological advances offered by 64-slice CT scanners 4 . This discussion emphasizes the importance of the quantitative data presented by Pinto et al 3 .…”
mentioning
confidence: 65%
“…In fact, the ability of new scanners to detect in-stent stenosis depends on a range of technical aspects, such as the type and design of the metal alloy the stent is made of, stent final diameter and expansion, the X-ray beam angle relative to the stent, spatial resolution (now with an isotropic voxel size of 0.35 mm 3 ), acquisition and reconstruction techniques (such as the convolution kernel that controls the signal-to-noise ratio), contrast agent concentration, X-ray tube capacity, and heart rate and frequency at the time of image acquisition, among others. Depending on how well these factors act together, instent luminal images may be accurate or hampered by artifacts, particularly the blooming effect and intraluminal dark images mimicking neointimal hyperplasia, but that are, in fact, the result of beam hardening.…”
mentioning
confidence: 99%