FIGURE 2.

Comparison of screening algorithms for pulmonary arterial hypertension (PAH) in systemic sclerosis. a) The DETECT algorithm and b) the Australian Scleroderma Interest Group (ASIG) algorithm. FVC: forced vital capacity; D_LCO: diffusing capacity of the lung for carbon monoxide; NT-proBNP: N-terminal pro-brain natriuretic peptide; TRV: tricuspid regurgitation velocity; RHC: right heart catheterisation; PFT: pulmonary function test; HRCT: high-resolution computed tomography; V/Q: ventilation perfusion scan.