Fig. 1

Static PET, T1 MRI_CE and fused PET/MR images of the cerebral tumour from scans 1–4. Axial view of the patient’s metastasis in the lateral precentral gyrus of the right hemisphere acquired using hybrid PET/MR imaging at four time points: scan 1—before stereotactic radiation, scan 2—1 month after the end of stereotactic radiation, scan 3—on suspicion of recurrence 1 month after scan 2, and scan 4—1 month after scan 3. Static PET (20–35 min), T1 MRI_CE and fused PET/MR images are shown from the top to bottom rows, respectively. Columns a–d show scans 1–4. The SUV scale for static PET images was 0–3.3, and the SUV scale of fused PET/MR images was 0.45–3.3