Brain tumor resection: Intraoperative monitoring with high-field-strength MR imaging-initial results

被引:69
作者
Martin, AJ
Hall, WA
Liu, HY
Pozza, CH
Michel, E
Casey, SO
Maxwell, RE
Truwit, CL
机构
[1] Univ Minnesota, Dept Radiol, Minneapolis, MN 55455 USA
[2] Univ Minnesota, Dept Neurosurg, Minneapolis, MN 55455 USA
关键词
brain; surgery; brain neoplasms; MR; magnet resonance (MR); guidance;
D O I
10.1148/radiology.215.1.r00ap31221
中图分类号
R8 [特种医学]; R445 [影像诊断学];
学科分类号
1002 ; 100207 ; 1009 ;
摘要
PURPOSE: To investigate the challenges and benefits of magnetic resonance (MR) imaging during brain tumor resection. MATERIALS AND METHODS: A short-bore 1.5-T MR system equipped with echo-planar-capable gradients was used in resection of brain tumors in 30 patients. MR sequences and need for contrast material enhancement were determined on the basis of the targeted lesion. MR images were acquired before, during, and after surgery. Tissue obtained at biopsy or excised as a result of intraoperative MR findings was examined histopathologically. RESULTS: MR images of enhancing lesions proved to be the most challenging to interpret intraoperatively, and relative enhancement at the resection cavity boundary was not specific for residual tumor. The ability to detect residual tumor intraoperatively resulted in a radiologically complete resection in 24 (80%) of 30 patients. The frequency of complications was low, and no untoward effects related to the MR environment were observed. CONCLUSION: Intraoperative MR imaging provided valuable information on the completeness of resection, and resection progress was well demonstrated during surgery.
引用
收藏
页码:221 / 228
页数:8
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