Cardiac Performance, Dr. D. Penney

Nuclear Imaging of the Heart:

Normal MUGA Scan:

The subject is a 55-year-old male admitted with chest pain and symptoms of mild thyrotoxicosis.

A multi-gated wall motion (MUGA) study of the heart was carried out.

Twenty milliliters of the patient's blood cells was removed, labelled with a radioactive substance (Technetium - 99m) and re-injected into the patient.

The patient was attached to an ECG machine, computer and nuclear medicine imager, called a gamma camera.

Images in the left anterior oblique projection were obtained. End-diastolic and end-systolic images are shown.

The motion of each chamber was analyzed clinically and an ejection fraction (EF) calculated by the computer.

The images indicate normal wall motion, and show excellent contraction of the heart and an EF of 83%.


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