18F-FDG PET/CT imaging of crossed cerebellar diaschisis induced by supratentorial tumors
10.3760/cma.j.cn371468-20211026-00609
- VernacularTitle:幕上肿瘤所致交叉性小脑失联络 18F-FDG PET/CT显像分析
- Author:
Min DU
1
;
Na DANG
;
Yueqin CHEN
;
Guqing ZHANG
;
Zhanguo SUN
;
Xiaoqiang WANG
Author Information
1. 济宁医学院附属医院医学影像科，济宁 272000
- Keywords:
Supratentorial tumor;
Crossed cerebellar diaschisis;
PET;
CT;
18F-FDG
- From:
Chinese Journal of Behavioral Medicine and Brain Science
2022;31(4):341-345
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the mechanism of crossed cerebellar diaschisis(CCD) induced by supratentorial tumors and the characteristics of 18F-FDG PET/CT imaging. Methods:Eighty-six patients with supratentorial tumors who underwent 18F-FDG PET/CT whole-body imaging from January 2017 to June 2021 were retrospectively analyzed.Placement, number, size, SUVmax, CT values, relationship with basal ganglia, edema, and cerebellar asymmetry index (AI) were observed and recorded.The imaging differences between patients with CCD and patients without CCD were compared, and the correlations between SUVmax, maximum diameter and cerebellar AI were analyzed.SPSS 21.0 software was used for statistical analysis.Chi-square test, independent sample t-test and Pearson correlation analysis were used for data statistics. Results:Among the 86 patients, 14 were patients with CCD and 72 were patients without CCD.The incidence of CCD was 16.3%.There were statistically significant differences in whether the primary lesions involved the basal ganglia region between patients with CCD and patients without CCD ( χ2=7.637, P=0.006). The cerebellar AI ((0.27±0.09), (0.05±0.02), t=6.847, P=0.003)and maximum diameter of primary lesions((3.98±1.09)cm, (2.36±1.61)cm, t=2.011, P=0.040) in patients with CCD were both larger than those in patients without CCD.There was a significant positive correlation between cerebellar AI and the maximum diameter of primary lesions in patients with CCD ( r=0.375 P=0.028). Conclusion:18F-FDG PET/CT imaging can assist in the diagnosis of crossed cerebellar diaschisis.The primary lesion of supratentorial tumor involving the basal ganglia is more likely to cause crossed cerebellar diaschisis, and the size of the primary lesion is correlated with cerebellar AI.
