Fig. 8. Dual T1–T2 contrast variation after intra-tumoral injection. (A and B) T2 weighted and (C and D) T1 weighted MR image (coronal section) of subcutaneous tumor after intratumoral nCP: Fe injection. (E) T2 weighted and (F) T1 weighted MRI of subcutaneous tumor (axial sections) 10 min after intratumoral injection of nCP: Fe. (G) T2 weighted and (H) T1 weighted MRI of subcutaneous tumor (axial sections) 18 hours after intratumoral injection of nCP: Fe. Sample injected regions are shown in white dotted boxes.