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Localization of ^99mTc-Sn-Pyrophosphate in Left Ventricular Aneurysms

Bowman Gray School of Medicine, Winston-Salem, North Carolina

Correspondence: For reprints contact: C. Douglas Maynard, Div. of Nuclear Medicine, Bowman Gray School of Medicine, 300 S. Hawthorne Rd., Winston-Salem, NC 27103.

ABSTRACT

Concentration of ^99mTc-pyrophosphate (^99mTc-PP_i) in the area of left ventricular aneurysms is discussed. In three cases clinical, laboratory, and electrocardiographic (ECG) evidence did not indicate that these patients currently had an acute myocardial infarction, but each patient had a clinical history and an ECG picture compatible with an old myocardial infarction. Cardiac catheterization revealed a large left ventricular aneurysm in all three cases. The reason for the preferential uptake of the radionuclide in the area of these aneurysms is not certain at this time.