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SPECT Image of the Heart

Topic Overview

Single photon emission computed tomography (SPECT) is a nuclear medicine imaging test. It is a type of positron emission tomography, also called a PET scan.

Doctors use SPECT to:

  • Diagnose a person who has symptoms of heart disease.
  • Assess your risk of heart attack.
  • Find damaged heart tissue after a heart attack.

SPECT locates areas of the heart muscle that have inadequate blood flow compared with areas that have normal flow. Inadequate blood flow may mean that coronary arteries are narrowed or that a heart attack has occurred.

It is a noninvasive imaging scan that exposes you to radiation. For this test, your doctor injects a tiny amount of radioactive tracers through a vein in your arm. After the radioactive tracer is injected, a camera that can detect the radiation emitted by these tracers rotates around you. This creates images of your heart from different angles. Then, computer graphics are used to create three-dimensional images of your heart.

For more information about PET scans, see Positron Emission Tomography (PET Scan).

Related Information

References

Other Works Consulted

  • Udelson JE, et al. (2015). Nuclear cardiology. In DL Mann et al., eds., Braunwald's Heart Disease: A Textbook of Cardiovascular Medicine, 10th ed., vol. 1, pp. 271-315. Philadelphia: Saunders.

Credits

ByHealthwise Staff
Primary Medical ReviewerRakesh K. Pai, MD - Cardiology, Electrophysiology
E. Gregory Thompson, MD - Internal Medicine
Martin J. Gabica, MD - Family Medicine
Adam Husney, MD - Family Medicine
Specialist Medical ReviewerStephen Fort, MD, MRCP, FRCPC - Interventional Cardiology

Current as ofDecember 6, 2017


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