Diagnostic value of MRI signs combined with standard b-value diffusion weighted imaging signals in meningioma
10.3969/j.issn.1002-1671.2024.12.004
- VernacularTitle:MRI征象联合标准b值扩散加权成像信号对脑膜瘤的诊断价值
- Author:
Hai LIU
1
;
Shixin CHEN
;
Zhiyou ZHAO
;
Hao JIA
Author Information
1. 汉中三二○一医院医学影像科,陕西 汉中 723000
- Keywords:
meningioma;
diffusion weighted imaging signal;
apparent diffusion coefficient;
magnetic resonance imaging
- From:
Journal of Practical Radiology
2024;40(12):1949-1952
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the diagnostic value of MRI signs combined with standard b-value diffusion weighted imaging(DWI)signals in meningioma.Methods A total of 134 patients with meningioma were selected.Using postoperative pathological examination results as the gold standard,the MRI signs,specific intensity of standard b-value DWI signals,apparent diffusion coefficient(ADC)value,and relative apparent diffusion coefficient(rADC)value between the two groups were compared;Receiver operating characteristic(ROC)curve was used to assess the ADC value and rADC value in differential diagnosis of low-grade and high-grade meningiomas.Results The proportions of no/mild peritumoral edema,clear tumor brain interface and tumor cystic changes in low-grade group were higher than high-grade group,and the proportion of lobulation sign was lower than high-grade group(P＜0.05).There was no statistically significant difference in DWI signal intensity between the two groups(P＞0.05).ADC and rADC values in low-grade group were higher than high-grade group(P＜0.05).The area under the curve(AUC)of ADC value,rADC value,and their combined differential diagnosis for low-grade and high-grade meningiomas were 0.765,0.844,and 0.903,respectively.Conclusion The standard b-value DWI signal intensity cannot be used for the diagnosis of meningioma,while MRI signs(peritumoral edema,tumor brain interface,tumor cystic changes,lobulation sign)and ADC value,rADC value have high clinical application value in the diagnosis of meningioma.
