Study note
MedicineCardiology

Blood pool imaging: technique and measurements

THE CONTEXT
Blood pool imaging evaluates cardiac isotope distribution to measure ventricular function and assess chamber structure.

Procedure

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Radioisotope-labelled blood cells are injected intravenously.
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After 4–5 minutes, a gamma camera evaluates isotope distribution in the heart at different phases of the cardiac cycle.

Information obtained

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The assessment permits calculation of ventricular ejection fraction.
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Blood pool imaging can also assess the size and shape of cardiac chambers.
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