Fig. 1
A 59-year-old female MM patient undergoing [18F]FDG PET/CT before and after HDT and ASCT. A Maximum intensity projection (MIP) PET/CT before therapy revealed an increased, diffuse bone marrow uptake of the tracer in the axial skeleton and the proximal parts of both humeri and femora, as well as several focal bone marrow lesions (arrows). According to IMPeTUs, the patient was classified at baseline as follows: BM4, F3 Sp, ExtraSp (DS5), L2. B Follow-up [18F]FDG PET/CT after ASCT demonstrated a complete remission of both diffuse bone marrow uptake as well as focal medullary lesions. [18F]FDG uptake in cervical lymph nodes was attributed to inflammatory reaction after therapy, thus considered benign. The respective results according to IMPeTUs at follow-up were: BM3, F1, L2, Fr