[Multidetector computed tomography of coronary arteries: state of the art. Second part: clinical applications].

At the beginning of the evaluation of Coronary Artery Disease (CAD), Coronary Multidetector Computed Tomography (MDCT) was exclusively used to detect calcified plaques in coronary arteries through the Calcium Score, whose value by itself is limited. Nowadays, thanks to the technological advancements, potential clinical applications, with this method, include detection of coronary arterial stenosis, assessment of coronary bridges, and evaluation of anomalous coronaries. The intraluminal coronary stent evaluation is not possible yet, but this might become possible with the new-generation scanners.

[Endothelial function assessment by positron emission tomography in patients with hypercholesterolemia].

Unlabelled: Hypercholesterolemia prompts to endothelial dysfunction (ED) and ED predisposes to atherogenesis. ED appears early in the course of atherogenesis and it is considered a coronary artery disease (CAD) marker.

Objectives: To assess endothelial function (EF) using Positron Emission Tomography (PET) in asymptomatic patients with recent dyslipidemia diagnosis and without history of ischemic heart disease and previous hypolipemiant treatment.

[A method designed for the assessment of myocardial metabolism in rats with 18F-FDG using small-animal-PET. Initial experience in Mexico].

Purpose: To standarize an acquisition protocol for the study of myocardial metabolism in adult rats.

Material And Methods: Three Wistar adult male rats were studied in three different protocols: no fasting group, fasting group over a period of 12 hr before the study with only water provided ad libitum, and fasting group by the same time receiving an oral 50% glucose solution. Thirty-minute acquisition images were obtained with a micro-PET, thirty and sixty minutes after the administration of 370-555 MBq 18F-FDG.

[Computer multidetector tomography of coronary arteries. State-of-the-art. Part 1. Technical aspects].

The study of atherosclerotic disease in coronary arteries is fundamental since it is the first cause of death in the Western hemisphere. The gold standard for its diagnosis is invasive angiography, but it contributes to an increase in costs for this group of patients. Nowadays fourth generation computed tomography (CT) equipments can construct acquisition data of up to 256 images in only 400 milliseconds (ms), which is 900 to 1000 times faster than first generation apparatus.

[Study of myocardial viability: comparison of PET and MRI].

Background: In the last years, few methods for the assessment of myocardial viability have been developed. Now a days the gold standard test for this purpose is the Positron Emission Tomography (PET). Recently, the expansion of Cardiovascular Magnetic Resonance imaging (MRI) has promoted the research for indexes or scores than can predict myocardial viability; so far, the late enhancement has proved to be one of the most accurate scores.