“…However, FDG-PET and FDG-PET/CT began to be advocated in the 1990s and it was suggested that it was more useful than CT, and came to be frequently applied in routine clinical practice in the 2000s because FDG-PET and FDG-PET/CT provide glucose metabolism-based information within pulmonary nodules and masses. [32][33][34][35][36][37][38] In contrast to CT, PET, and PET/CT, MRI has been tested to demonstrate its clinical relevance for diagnosis of pulmonary nodules by means of various noncontrastenhanced MRI techniques. These include conventional T 1and T 2 -weighted imaging, STIR turbo SE imaging and DWI, nondynamic and dynamic contrast-enhanced MRI, as well as molecular MRI techniques that have recently come into use, such as chemical exchange saturation transfer (CEST) imaging.…”