The effects of functional magnetic resonance imaging on motor cortex function in patients with cerebral ischemic stroke
- VernacularTitle:脑缺血性卒中患者运动功能康复的功能性磁共振成像研究
- Author:
Zi-Qian CHEN
;
Ping NI
;
Hui XIAO
;
You-Qiang YE
;
Gen-Nian QIAN
;
Xi-Zhang YANG
;
Jin-Liang WANG
;
Shang-Wen XU
;
Mei NIE
;
Yu SONG
;
Biyun ZHANG
;
- Publication Type:Journal Article
- Keywords:
Ischemic Stroke;
Functional magnetic resonance imaging;
Brain reoranization
- From:
Chinese Journal of Physical Medicine and Rehabilitation
2003;0(12):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the effects of functional magnetic resonance imaging (fMRI)with acute ischemic stroke (AIS) patients,and to evaluate the relationship between brain reorganization and motor recovery.Methods Nine AIS patients and 9 healthy volunteers were assessed by fMR1 during passive finger clenching at a pace of 1 Hz.The fMRI results were analyzed using SPM2 software.Lateral indices (LIs) and activated regions were calculated,and the relationship between LI and muscle strength was examined.Results In the control group,activation was observed in the contralateral sensorimotor cortex (SMC) and the bilateral supplementary area (SMA) during the passive movement.In the AIS group,similar results were recorded dur- ing unaffected hand movement,but the ipsilateral activation areas were greater than those on the eontralateral side during movement of the affected hand.LI results confirmed that movement of the affected hand mainly elici- ted activation in the ipsilateral hemisphere.Conclusion The different fMRI manifestations of patients and nor- mal subjects reflect brain compensation,and fMRI is valuable for studying the correlation between motor function and brain reorganization.
