The Application of ZOOMit-fMRI to Identify Language Functional Cortex
试验速览
- 阶段
- 不适用
- 入组人数
- 60
- 试验地点
- 1
- 主要终点
- The accurate rate for language related cortex localization with BOLD-fMRI and ZOOMit-fMRI
研究概览
简要总结
This Study was designed to collect a series of patients with gliomas which were involved in language related cortex to analyze difference accuracy of language related cortex localization between BOLD-fMRI and ZOOMit-fMRI.
详细描述
Gliomas can cause language dysfunction when they are involved in language related cortex. However, tumor resection also have risk to lead postoperatively language function deficits if destroy patients' language related cortex when tumor removed. Hence, it is important for neurosurgeon to realize the situation of patients' language related cortex locations in order to determine personal operative protocol.
The blood oxygen level dependent fMRI (BOLD-fMRI) is a prevalent preoperative method to localization language related cortex. It shows language relevant cortex by the change of blood oxygen level when patients cooperate to finish language tasks. The advantage of BOLD-fMRI includes higher time and spatial resolution, higher sensitivity, non-invasive. However, its accuracy of localization has not been satisfactory because neurovascular uncoupling. The ZOOMit-fMRI is a novel technic which is evolved from conventional BOLD-fMRI to localize language functional cortex.The advantage of ZOOMit-fMRI is smaller field of view (FOV) and higher spatial resolution comparing with BOLD-fMRI which helps to reduce other region of brain interference and elevate accuracy of localizations.
In this study, the investigators plan to enroll 60 patients, whose gliomas are involved in language related cortex, to acquire their BOLD-fMRI and ZOOMit-fMRI data in order to analyze their difference in the accuracy of language related cortex localization.
研究设计
- 研究类型
- Observational
- 观察模型
- Case Crossover
- 时间视角
- Prospective
入排标准
- 年龄范围
- 18 Years 至 70 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •age ≥ 18 years;
- •no history of surgical treatment or radiotherapy;
- •no contraindication to MRI scanning;
- •agreeable to receive the fMRI scanning and awake craniotomy with DCS
排除标准
- •basing on the anatomic MRI, the distance from the tumor to the hand-knob area lower than 20 mm;
- •disable to finish the task of clenching fist during fMRI scanning.
结局指标
主要结局
The accurate rate for language related cortex localization with BOLD-fMRI and ZOOMit-fMRI
时间窗: From scanning with BOLD-fMRI and ZOOMit-fMRI to getting the overlap indexes,assessed up to 2 weeks in each patient.
To illustrate the accurate rate of language functional cortex localization, the overlap indexes in BOLD-fMRI or ZOOMit-fMRI will be calculated. The results in BOLD-fMRI and ZOOMit-fMRI will be defined with 300 maximum value voxels via Statistical Parametric Mapping 8 (SPM8) software. According to the photographs and records of direct cortical stimulation (DCS) during awaken craniotomy, the DCS results will be confirmed as a global region with 5 mm diameter. Subsequently, the overlap of the BOLD-fMRI/ZOOMit-fMRI and DCS results will be calculated. In this way, the overlap indexes can be calculated as a ratio between the number of voxels overlapping and the number of total voxels in BOLD-fMRI and ZOOMit-fMRI. We defined if the overlap index is larger than 0, the localization result is accurate. In contrast, if the overlap index is equal to zero, the localization result is inaccurate. Finally, the accurate rate of language functional cortex localization can be calculated.
次要结局
未报告次要终点