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[Audio] Which of the following diagnostic modalities can best evaluate the right ventricular function in Cor Pulmonale? 2d echo can measure RV wall thickness and chamber dimensions; the interventricular septum may move paradoxically during systole in the presence of RV pressure overload HRCT may be able to document interstitial lung diseases and the extent of emphysema/ COPD that may cause Cor Pulmonale Chest CT angiogram may demonstrate acute pulmonary emboli Chest xray may show enlargement of the main central pulmonary arteries and hilar vessels and other pulmonary diseases.