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Reduced cardiac blood flow, SPECT scan

Reduced cardiac blood flow, SPECT scan

M172/0628

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Credit

ISM / SCIENCE PHOTO LIBRARY ISM / SCIENCE PHOTO LIBRARY

Caption

Reduced cardiac blood flow. Coloured single photon emission computed tomography (SPECT) scan of myocardial ischaemia (reduced blood flow to the myocardium, the heart muscle). The scan shows areas well-supplied with blood in red, with the surrounding colours (yellow, green, blue) showing decreasing amounts of blood supply. This is a axial (horizontal) section, where the wall of the heart would normally form a red ring. The gap at lower centre is where the reduced blood supply (ischaemia) has occurred. Ischaemia can be caused by blockages of the coronary arteries, and can lead to a heart attack. SPECT scanning uses the radioactive tracer technetium-99m (Tc-99m), which emits gamma ray photons, to examine the blood supply to organs like the brain and the heart.

Release details

Model release not required. Property release not required.

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