Differentiation of Acquired Immune Deficiency Syndrome Related Primary Central Nervous System Lymphoma from Cerebral toxoplasmosis with Use of Susceptibility-Weighted Imaging and Contrast Enhanced 3D-T1WI

•SWI and CE 3D-T1WI were useful in AR-PCNSL and cerebral toxoplasmosis.•AR-PCNSL showed a higher SWI-ILSS and larger 3D-T1WI volume enhancement.•AR-PCNSL was more likely to present incomplete, irregular LSIRs and CLSI on SWI.•Cerebral toxoplasmosis was more likely to present smooth LSIRs on SWI.