Why the study?
Does cardiothoracic ratio on chest radiography reliably indicate left ventricular impairment compared to radionuclide ventriculography and echocardiography in patients with chronic heart failure?
Does cardiothoracic ratio on chest radiography reliably indicate left ventricular impairment compared to radionuclide ventriculography and echocardiography in patients with chronic heart failure?
Cardiothoracic ratio on chest radiography is an unreliable marker of left ventricular dysfunction in heart failure, supporting the use of echocardiography or radionuclide ventriculography.
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Cardiothoracic ratio should not guide LV assessment in chronic HF; leaves open any adjunctive prognostic role pending prospective studies.
Clark et al. (2000) studied this question.