Comparison between echocardiographic subtraction method and first-pass radionuclide ventriculography for measuring right ventricular volume after operative "repair" of patients with tetralogy of Fallot
In the long-term follow-up of patients after repair of tetralogy of Fallot, monitoring right ventricular function is mandatory. The echocardiographic subtraction method proposed by Tomita seems to be easily applicable to a pediatric age population and accurate enough to be included in the longitudinal surveillance of such a group of patients.