This study is a effectiveness study of the application of high-definition enhanced computed-tomography for patients with chronic thromboembolic pulmonary hypertension(CTEPH).The patients with CTEPH was randomized into 2 groups,precise pulmonary endarterectomy group(guided by enhanced CT scanning) and traditional pulmonary endarterectomy group,the hemodynamic changes tested with right sided heart catherization from baseline to post-operative period and end-point including peri-operative deaths,follow-up mortality,follow-up parameters of ultrasonic cardiogram(UCG),right-sided heart catherization(RHC),nuclear magnetic resonance imaging(MRI),cardiac pulmonary exercise test(CPET) are documented,so as to compare the prognosis between these 2 groups.

Inclusion Criteria:

• Definite diagnosed with chronic thromboembolic pulmonary hypertension with the right-sided cathrization and pulmonary angiography;
• The computed tomography imaging implied that the location of the embolism could be reached with surgeries;

Exclusion Criteria:

• Beyond the age limit described above,or combined with other severe conditions such as severe organ dysfunction and considered contraindicated for surgical therapy by the cardiac surgeons;
• Without the consent by the patient or his/her families;
• Acute pulmonary embolism;
• Pulmonary sarcoma;
• Pulmonary arteritis;
• Combined with cardiogenic pulmonary hypertension or idiopathic pulmonary hypertension;

We have yet no plan to share IPD with other researchers