Chronic thromboembolic pulmonary hypertension (CTEPH) results from incomplete resolution of the vascular obstruction caused by pulmonary thromboemboli. If left untreated, over time, a gradual hemodynamic and symptomatic decline can be observed in these patients. As a consequence, prognosis in CTEPH is poor and proportional to the degree of pulmonary hypertension [1].

Pulmonary endarterectomy (PEA) represents the therapy of choice for patients with surgically accessible disease. PEA may be performed with a low mortality risk and results in clinical improvement and improved prognosis [2-4].

Radiologic assessment, most commonly with Computed Tomography (CT), is central in the evaluation of Pulmonary Hypertension (PH) and can assist in elucidating the underlying cause [5-9].

The aim of this study was to retrospectively assess the relationship between radiological and hemodynamic parameters in patients with Chronic Thromboembolic Pulmonary Hypertension (CTEPH). We introduced a New CT Score to evaluate hemodynamic changes only employing CT-Pulmonary-Angiography (CTPA).