Correlation of Asymmetry Indices Measured by Arterial Spin-Labeling MR Imaging and SPECT in Patients with Crossed Cerebellar Diaschisis

被引:21
作者
Kang, K. M. [1 ,3 ]
Sohn, C. -H. [1 ,3 ,4 ]
Kim, B. S. [1 ,3 ]
Kim, Y. I. [2 ]
Choi, S. H. [1 ,3 ,4 ]
Yun, T. J. [1 ,3 ]
Kim, J. -H. [1 ,3 ]
Park, S. -W. [3 ,5 ]
Cheon, G. J. [2 ]
Han, M. H. [1 ,3 ,4 ]
机构
[1] Seoul Natl Univ Hosp, Dept Radiol, Seoul 110744, South Korea
[2] Seoul Natl Univ Hosp, Dept Nucl Med, Seoul 110744, South Korea
[3] Seoul Natl Univ, Coll Med, Dept Radiol, Seoul, South Korea
[4] Seoul Natl Univ, Med Res Ctr, Inst Radiat Med, Seoul, South Korea
[5] Seoul Natl Univ, Dept Radiol, Boramae Hosp, Seoul, South Korea
关键词
POSITRON-EMISSION-TOMOGRAPHY; ACUTE ISCHEMIC-STROKE; BLOOD-FLOW; PERFUSION; INFARCTION; RECOVERY; ENCEPHALITIS; INVERSION; CT;
D O I
10.3174/ajnr.A4366
中图分类号
R74 [神经病学与精神病学];
学科分类号
摘要
BACKGROUND AND PURPOSE: Crossed cerebellar diaschisis, not only a secondary result of supratentorial infarction but also an indicator of clinical outcomes, has frequently been reported on PET and SPECT but has been rarely described with arterial spin-labeling MR imaging. The purpose of this study was to determine the ability of arterial spin-labeling MR imaging to evaluate crossed cerebellar diaschisis compared with that of SPECT. To our knowledge, this is the first study to validate arterial spin-labeling in crossed cerebellar diaschisis by using SPECT as a reference standard. MATERIALS AND METHODS: This study included 16 patients in whom crossed cerebellar diaschisis was shown on SPECT and 10 control subjects in whom crossed cerebellar diaschisis was not shown on SPECT. During the qualitative analysis, asymmetric cerebellar perfusion on arterial spin-labeling was divided into 1 of the following 3 grades by 2 blinded observers: the affected cerebellum was isointense compared with the unaffected cerebellum (grade I), it was slightly hypointense (grade II), or it was markedly hypointense (grade III). In the quantitative analysis, asymmetry indices were calculated by using SPECT and arterial spin-labeling images. For statistical analysis, kappa statistics, the interobserver correlation coefficient, the independent t test, Pearson correlation, and linear regression analysis were used. RESULTS: Almost all the diagnoses of crossed cerebellar diaschisis on SPECT were noted on arterial spin-labeling in both qualitative and quantitative analyses with good interobserver agreement (kappa = 0.961; interobserver correlation coefficient, 0.806). The mean asymmetry index of arterial spin-labeling (26.06 +/- 9.00) was significantly larger than that for SPECT (15.28 +/- 5.34; P < .001). There was a significant positive correlation between the asymmetry indices obtained for SPECT and those for arterial spin-labeling (r = 0.77 [95% CI, 0.443-0.916]; P < .001). The relationship of asymmetry indices between SPECT and arterial spin-labeling (x, y) was calculated as y = 6.2131 + 1.2986x (R-2 = 0.592; P < .001). CONCLUSIONS: Arterial spin-labeling can be a noninvasive alternative to SPECT for evaluating crossed cerebellar diaschisis.
引用
收藏
页码:1662 / 1668
页数:7
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