Preoperative 3T high field blood oxygen level dependent functional magnetic resonance imaging for glioma involving sensory cortical areas.
BACKGROUND
Localization of sensory cortical areas during the operation is essential to preserve the sensory function. Intraoperative direct electrostimulation under awake anesthesia is the golden standard but time-consuming. We applied 3T high field blood oxygen level-dependent (BOLD) functional magnetic resonance imaging (fMRI) to identify the relationship between glioma and cortical sensory areas preoperatively and to guide intraoperative direct electrostimulation for quick and precise localization.


METHODS
Five glioma patients with sensory cortex involvement by or next to the lesion had preoperative BOLD fMRI to determine the spatial relationship of cortical sensory areas to the tumours. Bilateral hand opposite movement was performed by these patients for fMRI. Precentral and postcentral gyri were identified by electrical stimulation during the operation. Karnofsky Performance Status scores of the patients' pre- and postoperative and the role of BOLD fMRI were evaluated.


RESULTS
The cortical sensory areas were all activated in five glioma patients involving postcentral gyrus areas by BOLD fMRI with bilateral hand opposite movement. The detected activation areas corresponded with the results from cortical electrical stimulation.


CONCLUSIONS
The relationship between cortical sensory areas and tumour can be accurately shown by BOLD fMRI before operation. And the information used to make the tumour resection could obtain good clinical results.
Li
Shao-wu
SW
Neuroimaging Center, Beijing Neurosurgical Institute, Capital Medical University, China.
Wang
Jiang-fei
JF
Jiang
Tao
T
Li
Shou-wei
SW
Zhang
Wen-bo
WB
Li
Zi-xiao
ZX
Zhang
Zhong
Z
Dai
Jian-ping
JP
Wang
Zhong-cheng
ZC
D000328:Adult; D005260:Female; D005910:Glioma / Q000097:blood / Q000473:pathology*; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D008875:Middle Aged; D010100:Oxygen / Q000097:blood*; D013003:Somatosensory Cortex / Q000502:physiology*; D055815:Young Adult
D010100:Oxygen