Evaluating Lung Doppler Signals in Patients With Systemic Sclerosis (SSc)

Inclusion Criteria

• •1. Able and willing to give signed informed consent prior to enrollment
• •2. Male or female, ≥ 18 years of age
• •3. Diagnosis of SSc according to 2013 ACR/EULAR SSc Classification Criteria (van den Hoogen 2013): Score ≥ 9.
• •4. Patients with RHC data available from measurement within 3 weeks prior to TPD assessment
• •5. No change in or initiation of PAH specific therapy between the last RHC and TPD