Value of susceptibilityweighted imaging in glioma classification

Abstract

：Objective To study thecharacteristics of susceptibility weighted imaging (SWI) and it's role in gliomaclassfication. Methods 45 glioma patients with pathologically confirmion, underwentpreopera-tive plain MRI, enhanced MRI and SWI examination. By using double blind method,the score of T1 WI, T2WI, enhanced T1 WI, SWI and enhanced SWI were acquired to displayenhancing tumor, peritumoral edema, tumor hemorrhage and tumor vein. The tumor volume oflow signal areas was measured by using measurement software to acquire the bleeding oftumor. Results In 26 cases of high grade gliomas,18 patients with intratu-moral, multiplepatchy low signal cords in varying degrees, which were proved by pathology as tumorhemorrhage and tumor blood vessels; in 19 case of low grade gliomas, 10 cases occured afew spots, linear low signal in tumor, which were proved by pathology as tumor hemorrhage;the bleeding of high grade gliomas was higher than that of the low level group ( P <0.05 ). SWI was superior to T, WI, T2 WI on displaying tumor hemorrhage and tumorvein(P<0. 05). Conclusion Different grades of glioma show obvious different display onSWI, and SWI probably be helpful for evaluation of glioma grading preoperatively.