Fig 3. Case 3. Preoperative images. Midsagittal postcontrast FSE T1- (A) and T2-weighted (B) views showing usual features of a spinal cord glioma. C–E. Intraoperative images. Midsagittal precontrast FSE T1-weighted (C), postcontrast FSE T1-weighted (D), and FSE T2-weighted views: observe similar phenomenon of air bubble trapping within surgical field (arrow in C) as in case 2 and contrast-enhancement of the margins of the resection cavity (thin arrows in D) at this early postcontrast phase of the intraoperative MR procedure. Observe true intraoperative conditions with a Gelfoam roll plugged on open dura (ball arrowhead in C). Similar PSPs as for the previous patient were used. F–H, Intraoperative images. Serial transverse FSE T1-weighted sections at the level of C7, before contrast agent perfusion (F), at 8 minutes (G), and at 30 minutes (H) after perfusion: striking increase in thickness of enhanced margins of the resection cavity were obvious comparing F to G and H. PSPs were as follows: TR, 530 ms; TE, 7.8 ms; ETL, 4; 4 NEX; SENSE acceleration factor, 1.6; AT, 3'15" for 16 4-mm-thick sections.