Figure 4: Transverse MR images obtained in 53-year-old man with GBM (RTOG-RPA class V). A, T2-weighted (3700/96), and, B, contrast-enhanced T1-weighted (627/17) images show an enhancing tumor with a cystic component and peritumor edema. C, On DW image (5378/139), the enhancing area has moderately high signal intensity. D, On ADC map, the enhancing area (arrow) has a minimum ADC of 1.2103 x 10–3 mm2/sec. This patient survived for 44 months after the initial MR examination.