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Severe Right Ventricular Contraction Asynchronism Revealing a Large Pericardial Effusion

Nuclear Medicine Service, Centre G.F. Leclerc, Dijon
Cardiology Service, Hôpital du Bocage, Dijon
Internal Medicine Service, Hôpital du Bocage, Dijon, France

Correspondence: For correspondence or reprints contact: Sophie Roy, Service de Medecine Nucleaire, Centre G.F. Leclerc, 1 rue Pr Marion, 21034 Dijon Cedex, France.

ABSTRACT

A gated blood-pool equilibrium radionuclide angiography was performed in a patient to determine the ejection fraction for doxorubicin cardiotoxicity evaluation. The phase image of the first harmonic of the Fourier analysis revealed a severe delay of the right ventricular contraction compared with that of the left ventricle. This right ventricular contraction asynchronism was due to a large pericardial effusion, confirmed by the presence of the halo sign on the summed gated images and by echocardiography. The phase delay moves towards normalization after pericardiocentesis. Although radionuclide angiocardiography is not the best method for identification of pericardial effusion, this diagnosis should be evoked when a severe homogenous delay of the right ventricular contraction is observed.

Key Words: pericardial effusion • Fourier phase analysis • radionuclide angiography