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Myocardial Mechanics: Structure and Function of Myocardial Fibers

…respectively. Figure 1. Layers of the left ventricular wall, pericardium and ventricular cavity. The endocardium The endocardium lines the atria, ventricles and the heart valves…

Physics of myocardial perfusion imaging (SPECT, PET): Radiotracers, perfusion, blood flow and viability

…radiotracers emit gamma photons directly. These gamma rays are detected by gamma cameras to create tomographic images of the left ventricle. In PET (Positron Emission…

Left Main Coronary Artery Disease: Revascularisation Strategy

…defined as a diameter reduction of at least 50%. Severe proximal disease of both the proximal left anterior descending and proximal left circumflex arteries may…

Left atrial enlargement (P mitrale) & right atrial enlargement (P pulmonale) on ECG

…first half of the P wave is therefore a reflection of right atrial activation and the second half is a reflection of left atrial activation…

Myocardial ischemia and infarction: lack of oxygen or imbalance between supply/demand

…to describe a reduction of blood flow to tissues and organs. A few decades later Cohnheim demonstrated that ligation of the left anterior descending artery…

Vulnerable Plaque and Mechanisms of Acute Coronary Occlusion

…with or without left ventricular hypertrophy. Among patients with NSTE ACS undergoing angiography, approximately 10% have no critical epicardial stenosis. In some of these patients…

Assessing left ventricular systolic function

…change (% reduction) in left ventricular diameter during systole. It is considered a poor measure of systolic function; it is only reliable if the left ventricle…

Overview of the ECG Waves, Deflections, Intervals, Durations

…left ventricle is usually considerably larger than the right ventricle, the QRS complex is actually a reflection of the electrical potentials generated by the left…

Technical aspects of the ultrasound image

…ventricular cavity. Directing and focusing ultrasound waves The direction and focus of ultrasound waves can be adjusted by varying the sequence of activation of the…

ECG interpretation: Characteristics of the normal ECG (P-wave, QRS complex, ST segment, T-wave)

…the left ventricle is many times larger than the vector generated by the right ventricle, the QRS complex is actually a reflection of left ventricular…

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