Magnetic resonance imaging appearance and changes on intracavitary Gliadel wafer placement: A pilot study

Figure 2 Magnetic resonance imaging appearance in a 54-year-old male patient without tumor progression (Patient 1). A: Post-operative day 7, (A) T2 weighted image (T2WI) (TR, 3000 ms; TE, 80 ms) and (B) post-contrast T1 weighted image (T1WI) (TR, 509 ms; TE, 14 ms) demonstrate increase in T2 hyperintensity and enhancement, respectively, surrounding the resection cavity site compared to the baseline post-operative images (not shown); C, D: Post-operative day 20, (C) T2WI (TR, 3000 ms; TE, 80 ms) and (D) T1WI (TR, 509 ms; TE, 14 ms) demonstrate a decrease in T2 hyperintensity and enhancement, respectively, surrounding the resection cavity site; E: MR perfusion [relative cerebral blood volume (rCBV) maps] do not show any increase in rCBV confirming previous that findings were due to post-treatment changes (pseudoprogression) rather than recurrence.