Coloured SPECT scans of blood flow through heart

Coloured SPECT scans of blood flow through heart

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Credit: OUELLETTE & THEROUX/PUBLIPHOTO DIFFUSION/ SCIENCE PHOTO LIBRARY

Caption: Healthy heart muscle. Coloured SPECT (single photon emission computed tomography) scans showing blood flow through a human heart. Two cross- sectional, transverse scans (at top) show blood being ejected from the ventricles of the heart, a white line is drawn over the left ventricle (at top right). Rate of blood flow is shown by the colour bar at far lower right: white fastest and blue slowest. A frontal section is seen at lower right and a graph indicates tracer ejected from the heart at each contraction. Blood flow is measured by injecting the patient with a radioact- ive tracer (technetium-99m) and gamma scanning.

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Keywords: anatomy, blood flow, healthy, heart, heart muscle, human body, myocardial, myocardial perfusion scintigrm, perfusion, scintigram, spect, spect scan

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