Brain Activation Evoked by Sensory Stimulation in Patients with Spinal Cord Injury : Functional Magnetic Resonance Imaging Correlations with Clinical Features.
10.3340/jkns.2015.58.3.242
- Author:
Jun Ki LEE
1
;
Chang Hyun OH
;
Ji Yong KIM
;
Hyung Chun PARK
;
Seung Hwan YOON
Author Information
1. Department of Neurosurgery, College of Medicine, Inha University, Incheon, Korea. nsyoon@gmail.com
- Publication Type:Original Article
- Keywords:
Functional MRI;
Spinal cord injury;
Proprioceptive;
Neuropathic pain
- MeSH:
Asia;
Brain*;
Frontal Lobe;
Humans;
Magnetic Resonance Imaging;
Neuralgia;
Oxygen;
Spinal Cord Injuries*;
Spinal Cord*;
Spinal Injuries;
Toes
- From:Journal of Korean Neurosurgical Society
2015;58(3):242-247
- CountryRepublic of Korea
- Language:English
-
Abstract:
OBJECTIVE: The purpose of this study is to determine whether the changes of contralateral sensorimotor cortical activation on functional magnetic resonance imaging (fMRI) can predict the neurological outcome among spinal cord injury (SCI) patients when the great toes are stimulated without notice. METHODS: This study enrolled a total of 49 patients with SCI and investigated each patient's preoperative fMRI, postoperative fMRI, American Spinal Injury Association (ASIA) score, and neuropathic pain occurrence. Patients were classified into 3 groups according to the change of blood oxygenation level dependent (BOLD) response on perioperative fMRI during proprioceptive stimulation with repetitive passive toe movements : 1) patients with a response of contralateral sensorimotor cortical activation in fMRI were categorized; 2) patients with a response in other regions; and 3) patients with no response. Correlation between the result of fMRI and each parameter was analyzed. RESULTS: In fMRI data, ASIA score was likely to show greater improvement in patients in group A compared to those belonging to group B or C (p<0.001). No statistical significance was observed between the result of fMRI and neuropathic pain (p=0.709). However, increase in neuropathic pain in response to the signal change of the ipsilateral frontal lobe on fMRI was statistically significant (p=0.030). CONCLUSION: When there was change of BOLD response at the contralateral sensorimotor cortex on perioperative fMRI after surgery, relief of neurological symptoms was highly likely for traumatic SCI patients. In addition, development of neuropathic pain was likely to occur when there was change of BOLD response at ipsilateral frontal lobe.
