Journal of Capital Medical University ›› 2021, Vol. 42 ›› Issue (2): 286-292.doi: 10.3969/j.issn.1006-7795.2021.02.021

• Clinical Research • Previous Articles     Next Articles

Study of apparent diffusion coefficient and glioma grading and molecular IDH1 mutant

Yan Xinting, Song Shuangshuang, Lu Jie*   

  1. Department of Radiology and Nuclear Medicine, Xuanwu Hospital, Capital Medical University, Beijing Key Laboratory of Magnetic Resonance Imaging and Brain Informatics, Beijing 100053, China
  • Received:2020-03-04 Published:2021-04-26
  • Contact: *E-mail:imaginglu@hotmail.com
  • Supported by:
    This study was supported by Beijing Municipal Administration of Hospitals' Ascent Plan(DFL20180802).

Abstract: Objective To investigate the value of apparent diffusion coefficient (ADC) from diffusion weighted imaging (DWI) in determinate glioma grades and subtype, and investigate the correlation between ADC and isocitrate dehydrogenase-1 (IDH1) mutant.Methods We retrospectively analyzed 82 patients with glioma confirmed by postoperative pathology in our hospital. ADC values of the tumor parenchymal area and contralateral normal white matter were measured, and minimum ADC values, mean ADC values, relative minimum ADC values, relative mean ADC values were calculated. All ADC values in glioma at each grade and subtype were statistically compared. The correlation between all ADC values and IDH1 mutation status were analyzed. Results There were 27 cases,22 cases and 33 cases of World Health Organization (WHO) Ⅱ, Ⅲ and Ⅳ grades glioma respectively, low-grade 27 cases and high-grade 55 cases. The pathology subtype of Ⅱ and Ⅲ grades glioma were astrocytoma and oligodendroglioma, astrocytoma 26 cases and oligodendroglioma 23 cases respectively. There were 28 cases of IDH1mut and 21 cases of IDH1wild in all the Ⅱ and Ⅲ grades glioma. Minimum ADC (ADCmin), mean ADC (ADCmean), relative minimum ADC (rADCmin),relative mean ADC (rADCmean) between grade Ⅱ glioma group and grade Ⅳ glioma group, grade Ⅲ glioma group and grade Ⅳ glioma group were statistically significant (P<0.05), grade Ⅱ glioma group and grade Ⅲ glioma group were not statistically significant (P>0.05), All ADC values between high and low grade glioma were statistically significant(P=0.023,0.029,0.024,0.035). ADCmin,rADCmin,rADCmean between astrocytoma and oligodendroglioma were statistically significant(P=0.044,0.025,0.040). All ADC values between IDH1mut and IDH1wild were not statistically significant(P>0.05). -Conclusions- ADC values could be used to predict the preoperative pathological grade and subtype of glioma, however those couldn’t be used to predict the preoperative IDH1 mutant.

Key words: glioma, apparent diffusion coefficient, grade, isocitrate dehydrogenase-1

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