 The frescoes created by Saturnino Gatti in the apse of the Church of St. Panthillo in Villa Grande de Torne in part, Ellaquila, were the subject of a thorough diagnostic study involving several tests, including sonic pulse velocity tests, hygrometric tests and infrared thermography. The results of these tests revealed significant insight into the condition of the frescoes, as well as their plaster and wall support. Sonic pulse velocity tests indicated areas of detachment or degradation while hygrometric analysis described humidity variations near the boundary between the conch area and the church nave. Passive infrared thermography detected temperature in homogeneities, particularly in areas where there were differences in wall texture and masonry structure. Furthermore, the comparison of sonic pulse velocity and passive thermography images revealed a correlation between hot areas and slow areas, suggesting the presence of detachments. This article was authored by Sarah Calandra, Irene Santoro, Stefano Loreti and others.