Figure 6.

Example of DW-MRI image with treatment response of sCR. A case of 60-year-old man who was diagnosed with MM (type of IgG kappa, RISS Stage II) is inserted 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 + 1 VD). The treatment effect was evaluated as sCR. It has been observed that multiple focal abnormal signals can be seen on the baseline images. However, the number of lesions shown on the images after induction chemotherapy decreased significantly. The mean ADC value of lesions in the scan range also increased slightly from 0.462 × 10⁻³ to 0.570 × 10⁻³ mm²/s.