Predictive value of magnetic resonance diffusion tensor imaging in motor function of patients with tumors in the motor areas of cerebral cortex after surgery on the hemiplegic limbs
10.3760/cma.j.issn.1671-8925.2012.06.020
- VernacularTitle:DTI对脑皮质运动区肿瘤患者偏瘫肢体术后运动功能的预测价值
- Author:
Lin ZHAO
1
;
Shou-Sen WANG
;
Yin-xing NG HUA
;
Xiao-Ping ZHOU
Author Information
1. 南京军区福州总医院
- Keywords:
Brain tumor,Cortical motor area;
Magnetic resonance diffusion tensor imaging
- From:
Chinese Journal of Neuromedicine
2012;11(6):626-629
- CountryChina
- Language:Chinese
-
Abstract:
Objective To discuss the predictive value of magnetic resonance diffusion tensor imaging (MR-DTI) in motor function of patients with tumors in the motor areas of cerebral cortex after surgery on the hemiplegic limbs. Methods Twenty patients with tumors in the motor areas of cerebral cortex,admitted to our hospital from March 2009 to January 2011,were recruited in our study; all these patients underwent MR-DTI and motor function of the hemiplegic limbs was evaluated with Brunnstrom scale before and after the surgery.According to the results of DTI test,the injured corticospinal tract (CST) was divided into 4 grades:type Ⅰ (CST integrity),type Ⅱ (CST integrity with mild compression),type Ⅲ (CST partial disruption) and type Ⅳ (CST mostly/completely disruption).The correlations between the CST damaged level and motor function of the hemiplegic limbs before and after surgery were analyzed. Results FA values ofipsilateral brain parenchyma (0.387±0.012) were statistically lower than those of the contralateral normal brain tissue (0.498±0.015,P＜0.05).No significant differences on CST damaged level and motor function of the hemiplegic limbs were noted between before and after surgery (P＞0.05).CST damaged level and motor function of the hemiplegic limbs had a negative correlation (P＜0.05).Motor function of the hemiplegic limbs and CST damaged level before the surgery and 6 months after the surgery had a significantly negative correlation (before the surgery:r=-0.901,P=0.000; after the surgery:r=-0.912,P=0.000). Conclusion DTI can display damaged level of the tumors in the motor area of cerebral cortex and reflect the motor function of the hemiplegic limbs after the surgery.
