Tumors: Glioma The signal intensity of gliomas on DW images is variable a subtle hyperintensity is a common nonspecific finding Can the ADC Values Differentiate between Different Grades of Gliomas? Can the DW Images and/or ADC Maps Differentiate between Glioma and Peritumoral Edema?
Metastasis -the signal intensity of nonnecrotic components of metastases on DW images is variable (generally iso- or hypointense; occasionally hyperintense). -The necrotic components of metastases show a marked signal suppression on DW MR images and increased ADC value
Differential Diagnosis of Ring-enhancing Cerebral Masses The central hypointensity on the DW image and the hyperintensity on the ADC map support the diagnosis of necrotic metastasis.
the signal intensity of nonnecrotic components of metastases on DW images is variable (generally iso- or hypointense, occasionally hyperintense). The necrotic components of metastases show a marked signal suppression on DW images and increased ADC values (may be related to increased free water).
Tumor cellularity is probably a major determinant of signal intensity of solid components of cerebral metastases on DW images and on ADC values
Meningioma The signal intensity of meningiomas on DW images is variable Most benign meningiomas are isointense on DW images Only 23%of benign meningiomas (three of 13) were slightly hyperintense in the study of Filippi et