Fig. 9From: Pathophysiology of right ventricular failure in acute pulmonary embolism and chronic thromboembolic pulmonary hypertension: a pictorial essay for the interventional radiologistMeasurement of RV/LV ratio. Axial CT images demonstrate the best approximated four-chamber view. Calipers are placed from inner wall to inner wall at the maximal diameter on a view that best approximates the four-chamber viewBack to article page