With 3D-MPRAGE and DWI sequence evaluation of intraplaque hemorrhage before carotid artery stenting
10.3969/j.issn.1002-1671.2014.11.006
- VernacularTitle:3D-MPRAGE 及 DWI 序列评价颈动脉支架术前斑块内出血的研究
- Author:
Bin YAO
;
Honglu SHI
;
Guangbin WANG
;
Li YANG
;
Xingyue ZHENG
- Publication Type:Journal Article
- Keywords:
carotid intraplaque hemorrhage;
diffusion-weighted imaging;
3D-MPRAGE;
carotid artery stenting
- From:
Journal of Practical Radiology
2014;(11):1798-1801
- CountryChina
- Language:Chinese
-
Abstract:
Objective To assess intraplaque hemorrhage before carotid artery stenting (CAS)by use of 3D-MPRAGE and DWI sequence.Methods Thirty-two symptomatic patients who had carotid artery plaque suspected by color Doppler ultrasonography and prepared for CAS underwent 3.0T carotid high-resolution MR scans,including regular sequence,T1-weighted gradient echo three-di-mensional magnetization prepared (3D-MPRAGE ) sequence,diffusion-weighted imaging (DWI ) sequences.According to 3D-MPRAGE sequence hemorrhage and non-hemorrhage groups were divided,and measured the mean ADC values of the two groups, hemorrhage and non-hemorrhage part in the hemorrhage group.Meanwhile preoperative cerebral hemorrhage group underwent brain DWI scans.Independent samples t-test analysis was utilized by SPSS V20.0 statistical software.Results High-resolution MRI dis-played 40 plaques,fourteen hemorrhagic plaques showed by 3D-MPRAGE sequence.The mean ADC values of hemorrhage and no-hemorrhage group were(1 233.5±283.5)× 10 -6 mm2/s,(1 688.9 ± 449.6)× 10 -6 mm2/s respectively,the difference of both was significant (t=3.43,P <0.05).The mean ADC values of hemorrhage and non-hemorrhage parts in the hemorrhage group mean ADC values were (934.0 ± 387.9)× 10-6 mm2/s,(1 313.9 ± 295.0)× 10-6 mm2/s respectively;the difference of both was statistically significant (t=2.92,P < 0.05 ).The difference of mean ADC values between non-hemorrhage part in the hemorrhage group and hemorrhage group was statistically significant (t=2.80,P <0.05).Conclusion 3D-MPRAGE and DWI sequences can be evaluated intraplaque hemorrhage before CAS,and provided a reliable basis for timely clinical interventions to prevent stroke.
