MRI evaluation of superficial siderosis of the central nervous system after traumatic subarachnoid hemorrhage
10.3969/j.issn.1002-1671.2017.02.006
- VernacularTitle:外伤性蛛网膜下腔出血致中枢神经系统表面铁质沉积症的 MRI 评价
- Author:
Hongwei ZHAO
;
Zhonglie LU
;
Qingjie WU
;
Hu LIU
;
Haijuan LV
;
Xiangyang GONG
- Keywords:
magnetic resonance imaging;
superficial siderosis of the central nervous system;
traumatic subarachnoid hemorrhage
- From:
Journal of Practical Radiology
2017;33(2):186-189
- CountryChina
- Language:Chinese
-
Abstract:
Objective To assess the diagnostic value of 3D-enhanced T2 ? weighted angiography (ESWAN )in evaluating superficial siderosis of the central nervous system (SS-CNS)after traumatic subarachnoid hemorrhage (tSAH).Methods ESWAN and GRE T2 ? WI sequence were performed on 30 patients with tSAH,detection rate and the number of distribution areas of SS-CNS were compared between the two sequences.A McNemar’s test and Wilcoxon signed-rank test were used to analyze the differences between T2 ? WI and ESWAN images sequences. Results In the tSAH group,29 of 30 patients (96.7%)showed SS-CNS on ESWAN images,the total number of SS-CNS regions was 134.Identified SS-CNS positive rate respectively was 95.8% (23/24)on ESWAN images and 66.7% (1 6/24)on T2 ? WI in 24 patients simultaneously perform ESWAN and T2 ? WI sequences.A McNemar ’s test showed that there was significant difference between the positive rates of two sequences in detecting the SS-CNS (χ2 =7.0,P <0.05).The number of SS-CNS regions on ESWAN images and T2 ? WI was 106 and 34 respectively.The Wilcoxon signed rank test showed that the number of SS-CNS regions difference between two sequences was significant (Z =-4.225,P <0.01).Conclusion Various degress of SS-CNS are detected in a majority of tSAH atients.ESWAN sequence is a reliable and efficient method for assessment of SS-CNS.
