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Radionuclide detection of mild valvular regurgitation: Its significance as assessed by Doppler sonography

Abstract

Radionuclide ventriculography (RNV) indices of regurgitation, Fourier amplitude ratio (FAR) and additional RNV variables were prospectively compared to Doppler echocardiography (DE) in 108 consecutive patients with no or mild left ventricular regurgitation to assess RNV accuracy in detecting regurgitation in patients with different cardiac disorders. Exclusion of left ventricular or tricuspid regurgitation allowed investigation of the FAR range at rest and during exercise in a sufficiently large appropriate reference group without regurgitation. FAR, as well as other RNV variables, failed to provide more information for the diagnosis of mild (clinically irrelevant) left ventricular regurgitation than the diagnosis upon admission alone. Despite the superiority of DE as a gold standard in the detection of mild regurgitation, at present evaluation of RNV regurgitation indices might be the only method to discover regurgitation arising during dynamic exercise.

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Correspondence to Leo Fridrich.

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Fridrich, L., Weihs, W., Sommer, G. et al. Radionuclide detection of mild valvular regurgitation: Its significance as assessed by Doppler sonography. Eur J Nucl Med 14, 125–130 (1988). https://doi.org/10.1007/BF00293535

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Key words

  • Regurgitation
  • Fourier amplitude ratio
  • Doppler echocardiography