Figure 5.

Example of DW-MRI image with treatment response of PD. A case of a 60-year-old man who was diagnosed with MM (type of IgG λ, RISS Stage II) is presented here. (A–C) Coronal images of DWI, inverted images, and ADC map at baseline visit. (D–F) Corresponding images of the same patient after three courses of induction chemotherapy (3 VCD). The treatment effect was evaluated as PD. Diffuse abnormal signal can be seen in the pelvis. It can be observed that the number of lesions increases and the scopes of most lesions expand. The mean ADC value of lesions in the scan range also increased from 0.743 × 10⁻³ to 0.881 × 10⁻³ mm²/s.