False-colour scintigram of a human heart

False-colour scintigram of a human heart

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Caption: False-colour scintigram (gamma camera scan) of a human heart showing ischaemia (reduced blood flow) following myocardial infarction, the death of a section of heart muscle following obstruction of a coronary artery - a heart attack. The image shows the uptake of a radio-isotope, Thallium-201, by the heart's muscle cells. Radioactive emissions recorded by the gamma camera are colour-coded to reveal a defect ("cold spot"), represented by the incomplete U-shaped feature (the break is at bottom left). Healthy heart muscle is coloured mauve, green & light blue. This type of "cold spot" scan is used to demonstrate the performance of the heart at rest & during exercise.

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Keywords: cardiac, condition, disease, disorder, false-coloured, gamma camera scan, healthcare, heart, heart attack, heart disease, heart scan, infarction, ischaemia, medical, medicine, myocardial, myocardial infarction, scintigram

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