title: [Error introduced in the radiocardiographic measurement of right volume by the non linearity of the detector in high count rates (author's transl)].
abstract: The short life tracers permit the use of high activities and so allow to follow with a good statistic accuracy fast phenomenons such as the different phases of cardiac revolution. However, this advantage may be quickly limited by the dead-time of the detection unit used. It results from this, in high activities, a non linear response which introduces non negligible errors which we have calculated and verifies thanks to experience in the measurement of right ventricular volumes.
mesh_terms: D006328:Cardiac Catheterization; D002302:Cardiac Output; D002306:Cardiac Volume; D006334:Heart Function Tests; D006352:Heart Ventricles; D011652:Pulmonary Circulation; D011865:Radioisotope Dilution Technique
vernacular_title: Erreur introduite sur la mesure radiocardiographique du volume cavitaire droit par la non-linéarité du détecteur aux forts taux de comptage