<qa>  What is the goal of the present study?Aim of the present study is to evaluate the role of 68Ga-DOTA-NOC PETCT in patients with idiopathic pulmonary fibrosis, in particular in patients with IPFUIP and in cases with NSIP, that are characterized by a more indolent progression. PETCT data will be compared with HRCT findings for the early detection of fibrotic areas and to non-invasively assess somatostatin receptors expression at lung level in these patients, with potential therapeutic implications. Moreover, the SUVmax maximum standardized uptake value will be analyzed in comparison with disease site and extension on HRCT. 