Abstract
AbstractObjective:To analyze MRI features of intracranial hemangiopericytoma (HPC) and Anaplastic Meningioma (AM). Exploring the value of DWI and ADC value in differential diagnosis of them.Materials and Methods:The imaging data of 20 cases of HPC and 31 cases of AM pathologically confirmed were collected. They all had plain and enhanced MRI scans and diffusion weighted MRI scans. The results were analyzed in all cases.Results:Differences in tumor shape (χ2=4.763,P<0.05), hemorrhage (χ2=8.400,P<0.01), signal void of vessel (χ2=26.793,P<0.001), brain tumor interface (χ2=4.432,P<0.05), dural attachment (χ2=15.093,P<0.001), dural tail (χ2=9.670,P<0.01), enhancement (χ2=8.025,P<0.01) and homogenous enhancement (χ2=5.097, P<0.05) between HPC and AM were statistically signiifcant. Differences in T2WI signal (χ2=3.227,P>0.05), cystic necrosis (χ2=0.658,P>0.05), peritumoral edema (χ2=0.056,P>0.05) and bone destruction (χ2=2.588,P>0.05) were <br> not statistically signiifcant. The former had mostly lobulated, irregular shape, cystic necrosis, hemorrhage and tumor blood lfow within the empty signal more common, clear brain tumor interface, signiifcant heterogenous enhancement, narrow base connected with dural, rare dural tail, the latter was mostly round or oval, rare cystic necrosis and hemorrhage, fuzzy brain tumor interface, signiifcant homogenous enhancement, wide base connected with dural, dural tail more common. Twenty cases of HPC showed equal or slightly higher signal on DWI, and the ADC mean was (1.21±0.14)×10-3 mm2/s. In 28 from 31 cases of AM, DWI showed higher or slightly higher signal, 3 cases showed low signal, ADC mean was (0.82±0.12) ×10-3 mm2/s, Which was signiifcantly lower than that of HPC (t=10.39,P<0.001). When optimal cut point of ADC was 1.07×10-3 mm2/s for diagnosis of HPC and AM, the area under the ROC curve was 0.98±0.01, 95% conifdence intervals was 0.95—1.00, the sensitivity, speciifcity and accuracy was 90%, 100% and 90%.Conclusions:The MRI features are helpful in differential diagnosis of HPC and AM, ADC values can be applied as a complementary tool in the differential diagnosis of them, which can increase the diagnostic accuracy.关键词
血管外皮细胞瘤/脑膜瘤/磁共振成像Key words
Hemangiopericytoma/Meningioma/Magnetic resonance imaging分类
医药卫生
