title: Preoperative 3T high field blood oxygen level dependent functional magnetic resonance imaging for glioma involving sensory cortical areas.
abstract: 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.
authors.affiliation: Neuroimaging Center, Beijing Neurosurgical Institute, Capital Medical University, China.
authors.forename: Shao-wu
authors.initials: SW
authors.lastname: Li
authors.forename: Jiang-fei
authors.initials: JF
authors.lastname: Wang
authors.forename: Tao
authors.initials: T
authors.lastname: Jiang
authors.forename: Shou-wei
authors.initials: SW
authors.lastname: Li
authors.forename: Wen-bo
authors.initials: WB
authors.lastname: Zhang
authors.forename: Zi-xiao
authors.initials: ZX
authors.lastname: Li
authors.forename: Zhong
authors.initials: Z
authors.lastname: Zhang
authors.forename: Jian-ping
authors.initials: JP
authors.lastname: Dai
authors.forename: Zhong-cheng
authors.initials: ZC
authors.lastname: Wang
mesh_terms: 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
chemical_list: D010100:Oxygen