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Fourier Amplitude Ratio: A New Way to Assess Valvular Regurgitation

Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania

Correspondence: For reprints contact: P. Todd Makler, Jr., MD, Hospital of the University of Pennsylvania, Sec. of Nucl. Med., 3400 Spruce St., Philadelphia, PA 19104.

ABSTRACT

The stroke-volume ratio determined from the equilibrium gated blood-pool study has been utilized to assess valvular regurgitation, but it is difficult to get reproducible results using generally available equipment. We have developed a new approach utilizing the Fourier amplitude ratio of the left and right ventricles, which is easily implemented and reproducible. Initial clinical experience shows that 17 patients with valvular regurgitation were clearly distinguished from 30 patients without valve disease.

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