3.0MRI弥散加权成像对脑胶质瘤分级的诊断价值及准确性分析  

3.O Diagnostic Value and Accuracy Analysis of MRI Diffusion-weighted Imaging for Glioma Grading

作　　者：许宗丽 Xu Zongli(Imaging Department,Linyi Central Hospital,Linyi,Shandong 276400)

机构地区：[1]临沂市中心医院影像科,山东临沂276400

出　　处：《现代医用影像学》2024年第1期1-4,8,共5页Modern Medical Imageology

摘　　要：目的:研究脑胶质瘤患者,在开展检查的过程中应用3.0MRI弥散加权成像对于分级的有效价值以及准确性。方法:选取248例脑胶质瘤患者,均为我院2021年1月到2022年1月时间段内收治,均进行3.0MRI弥散加权成像,分析弥散系数值对于不同级别(低级/高级)脑胶质瘤的诊断价值;正常脑组织以及脑脊液的弥散系数以及弥散系数值。结果:弥散系数值1.11×10^(-3)mm^(2)/s属于最佳的临界点,当检测值大于最佳临界点时候,计为低级别的脑胶质瘤,3.0MRI弥散加权成像时可知,灵敏度93.33%,特异度93.75%,准确率93.55%,阳性的预测值为93.33%,阴性预测值为93.75%;弥散系数值0.93×10^(-3)mm^(2)/s属于最佳的临界点,当数值小于最佳临界点以上,则计为高级别的脑胶质瘤,进行检测可知,灵敏度、特异度、准确性、阳性的预测值、阴性预测值分别:81.25%、93.33%、87.10%、95.86%、82.35%,通过弥散系数值分析判定脑胶质瘤可知(P<0.05);正常白质的DWI信号低于正常灰质,组间对比弥散系数以及弥散系数值无差异(P>0.05);灰白质的信号更高,高于脑脊液,弥散系数低于脑脊液,弥散系数值比脑脊液高(P<0.05)。结论:针对脑胶质瘤分级应用3.0MRI弥散加权成像,分级效果显著,准确性更高,有助于治疗的进行,值得规模化应用。Objective:To study the effective value and accuracy of 3.OMRI dffusion-weighted imaging for grading patients with glioma in the process of examination.Methods:A total of 248 patients with glioma were selected and admitted to our hospital from January 2021 to January 2022.All patients underwent 3.OMRI diffusion weighted imaging,and the diagnostic value of diffusion coefficient value for different grades(low/advanced)glioma was analyzed.Diffusion coefficient and value of normal brain tissue and cerebrospinal fluid.Results:The diffusion coefficient value of 1.11×10^(-3)mm^(2)/s is the best critical point.When the detection value is greater than the best critical point,it is considered as a low-grade glioma.The sensitivity,specificity,accuracy and positive predictive value of 3.0MRI are 93.33%,93.75%,93.55%and 93.33%,respectively.The negative predictive value was 93.75%.The diffusion coefficient value of 0.93 ×10^(-3)mm^(2)/s belongs to the optimal critical point,when the value is less than the optimal critical point,it is counted as high-grade glioma.The sensitivity,specificity,accuracy positive predictive value and negative predictive value of the detection can be shown as follows:81.25%,93.33%,87.10%,95.86%,82.35%,were determined by diffusion coefficient analysis(P<0.05);The DWI signal of normal white matter was lower than that of normal gray matter,and there was no dfference in contrast dffusion coefficient and diffusion coefficient between groups(P>0.05).The signal of gray matter was higher than that of CSF,the diffusion coefficient was lower than that of CSF,and the diffusion coefficient value was higher than that of CSF(P<0.05).Conclusion:The application of 3.OMRI diffusion weighted imaging for grading glioma has significant grading effect and higher accuracy,which is helpful to the treatment and worthy of large-scale application.

关 键 词：3.0MRI弥散加权成像 脑胶质瘤分级 诊断价值 准确性 

分 类 号：R445.2[医药卫生—影像医学与核医学] R739.41[医药卫生—诊断学]