磁共振成像2025，Vol.16Issue(6)：78-84,92,8.DOI:10.12015/issn.1674-8034.2025.06.012
基于放疗前增强T1WI影像组学分数预测胶质母细胞瘤长期不良预后风险
The radioscore based on pre-radiotherapy MRI for predicting poor outcome risk in long-term follow-up of glioblastoma patients
王飞 1全冠民 1袁涛1
作者信息
- 1. 河北医科大学第二医院影像科,石家庄 050000
- 折叠
摘要
Abstract
Objective:To explore the value of radioscores which based on radiomics features extracted from pre-radiotherapy contrast enhanced T1WI(CE-T1WI)on the prediction of poor survival prognosis in long-term follow-up for glioblastoma(GBM)patients.Materials and Methods:We retrospectively analyzed the pre-radiotherpy MRI and clinical data of 76 patients with GBM.Then we divided all cases into a training group and a validation group in a 7∶3 ratio,construct a model based on the training group,and conduct efficacy validation in the validation group.The radiomics features were extracted on CE-T1WI images.The overall survival(OS)was defined as poor prognosis if it was less than or equal to the median value(OS=380 days),and good prognosis if it was greater than the median value.The patients were divided into two groups,with 38 cases in each groups.We compared the difference of clinical,conventional MRI and radiomics variables between poor and good prognosis groups.Univariate and multivariate analyses were employed to select the risk factors.Then the prognosis predictive models based on clinical factors,conventional MRI findings,radiomics factors were established separately.We compared area under the curve(AUC)of receiver operating characteristic(ROC)curve for subjects with shorter OS evaluated with different models.Results:Compared to the patients with good prognosis,the patients with poor prognosis(OS≤380 days)were older(P=0.025),had shorter progression-free survival(PFS)(P<0.001),had lower survival during follow-up(P<0.001),tended to have coarse linear or nodular residual cavity wall enhancement(P=0.018),had higher fluid attenuated inversion recovery(FLAIR)hyperintense orthogonal growth rate(rFLAIR)(P=0.024)and growth rate orthogonal value of enhancement lesions(rCE)(P=0.002).Multivariate analysis showed that coarse linear or nodular enhancement of residual cavity wall[hazard ratio(HR)=2.127]were the independent risk predictors of shorter PFS of patients with GBM.Whereas,older age(HR=1.046)and coarse linear or nodular enhancement in residual cavity wall(HR=2.105)were independent risk predictors of shorter OS.In univariate and multivariate analyses,the HR values of radioscore for shorter OS were 2.392(P=0.003)and 1.129(P=0.054)separately.The AUCs of combination models in the training cohort and validation cohorts were 0.822 and 0.841 respectively,which indicated that the combined model including radioscores had predictive significance for poor prognosis.Conclusions:The radioscore extracted from pre-radiotherpy MRI could be used as a predictive factor of poor survival of GBM patients.This radiomics feature could improve the predictive efficacy of the model which included conventional and clinical variables.关键词
胶质母细胞瘤/磁共振成像/影像组学/对比增强/预后/进展Key words
glioblastoma/magnetic resonance imaging/radiomics/contrast enhancement/prognosis/prediction分类
医药卫生引用本文复制引用
王飞,全冠民,袁涛..基于放疗前增强T1WI影像组学分数预测胶质母细胞瘤长期不良预后风险[J].磁共振成像,2025,16(6):78-84,92,8.
