Figure 2. Example of a patient with incomplete resection and following residual tumor growth at the 6-month follow-up examination.

In the upper row (A) anatomical images are shown. The second row (B) shows ASL data in which residual tumor can be clearly seen in all time points and the last row (C) show DSC data with visualization of elevated perfusion in all cases except the intraoperative image acquisition, which might be attributed to the low signal-to-noise ratio in the intraoperative setting. All three images around the surgical intervention were acquired on 1.5T except the 6-month follow-up image, which was acquired using 3T.