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What is electrocardiography? how to diagnose?

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 What is electrocardiography? how to diagnose?  Electrocardiography (ECG or EKG) is a diagnostic test that records the electrical activity of the heart. The test is used to evaluate the heart's electrical activity and rhythm, and to diagnose and evaluate conditions such as heart attacks, arrhythmias, and heart disease. ECG test is performed by attaching electrodes to the skin of the chest, arms, and legs. The electrodes are connected to an ECG machine, which records the electrical activity of the heart. The test is usually done while the patient is lying down, and it takes about 5-10 minutes to complete. The ECG tracing, which is a graph of the heart's electrical activity, is analyzed by a healthcare professional. The tracing shows the electrical activity of the heart as it goes through its normal cycle of contraction and relaxation. The healthcare professional can use this information to diagnose and evaluate conditions such as: Heart attacks: A heart attack occurs when the b...
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functional mri explained | fmri

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Functional mri explained | fmri Functional MRI (fMRI) is a type of MRI scan that uses blood flow to indicate which parts of the brain are active. It works by measuring changes in the oxygen levels in blood flowing through the brain, which increase in areas where neural activity is taking place. This is done by injecting a contrast agent into the bloodstream, which makes the blood in active areas appear bright on the scan. fMRI is commonly used in research to map brain activity and can be used to diagnose brain disorders and injuries, as well as to study brain function in various cognitive and behavioral tasks.
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is it ok to get married during PhD

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