Investigating the Cortical Correlates of Spinal Cord Stimulation Using Functional Magnetic Resonance Imaging
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 10
- 试验地点
- 1
- 主要终点
- Effects of spinal cord stimulation on patients with neuropathic leg pain through fMRI analysis
研究概览
简要总结
The overall objective of this study is to assess patterns of fMRI cortical activation with spinal cord stimulation (SCS) in patients with neuropathic leg pain and therefore define cortical correlates, as well as to investigate cortical representations of pain and pain relief and the interactions therein, in the setting of neuropathic leg pain and SCS.
详细描述
The main objective is to define, using functional magnetic resonance imaging, the effects of spinal cord stimulation (SCS) on cortical and subcortical BOLD effects in patients with neuropathic leg pain. Our hypothesis is that SCS will demonstrate a consistent pattern of BOLD activation that will correlate with symptomatic improvement.
研究设计
- 研究类型
- Observational
- 观察模型
- Other
- 时间视角
- Prospective
入排标准
- 年龄范围
- 18 Years 至 55 Years（Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Age 18-55 years at time of enrollment.
- •Have previous implantation of thoracic epidural Medtronic Restore Ultra, Prime Advanced and Restore Advanced SCS in place for the treatment of CPRS-type 1 or chronic refractory neuropathic leg pain following FBSS. The implantation must be 3 or more months prior to enrollment.
- •Patient must have reported significant pain improvement (>50%) following implantation of the SCS.
- •Have consistently reproducible pain relief (> 50%) within 10 minutes of switching SCS from an OFF state to an ON state (with "optimal" parameters - see below).
- •The SCS battery is implanted in the buttocks region.
- •Unilateral or bilateral extremity pain.
- •Able to provide informed consent.
排除标准
- •Contraindication to MRI such as: SCS lead in the cervical epidural region Cardiac pacemaker Intracranial aneurysm clips, metallic implants or external clips within 10mm of the head Metallic foreign metals within the orbits Pregnancy; (urine pregnancy test will be done to confirm) Claustrophobia
- •Pattern of response to spinal cord stimulation Inconsistent response of pain to spinal cord stimulation Long interval (> 10 minutes) before pain relief following switching SCS from an OFF state to an ON state (with "optimal" parameters) - long "washout" period Lack of significant pain improvement (< 50%) following implantation of SCS
- •Positive history of significant brain lesions or pathology including:
- •Prior ablative neurosurgery
- •History of large vessel strokes or brain tumors
- •Psychological Screening
结局指标
主要结局
Effects of spinal cord stimulation on patients with neuropathic leg pain through fMRI analysis
时间窗: 1 year
We are analyzing the data from fMRI scans to understand more the functional activation of the cerebral cortex
次要结局
未报告次要终点
研究者
Vibhor Krishna
Assistant Professor of Neurological Surgery
Ohio State University