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lüll CNS complications of AIDS: CT and MR findings Ramsey RG; Geremia GKAJR Am J Roentgenol 1988[Sep]; 151 (3): 449-54AIDS is now a common disease, seen daily in large metropolitan medical centers. Neuroimaging techniques such as CT and MR are critical to the detection and diagnosis of CNS complications. Intracerebral infections are common. These infections frequently are caused by opportunistic organisms; less commonly, they are bacterial infections. The cranial imaging features on CT and MR are not pathognomonic, but their distribution or appearance (e.g., asymmetric target lesions of toxoplasmosis) may have predictive value in a known AIDS patient. The superior contrast resolution of MR makes it a more sensitive cross-sectional imaging tool for evaluating intracerebral abnormalities associated with a variety of infectious processes. Differential diagnoses still include metastatic disease, lymphoma, and infarcts. When MR is used as the initial cross-sectional imaging study, contrast-enhanced CT may still be necessary to further characterize a lesion. Currently, more experience exists with CT for follow-up of the AIDS patient with CNS manifestations. MR, particularly with gadolinium-DTPA as a contrast medium, will probably become the imaging method of choice.|*Magnetic Resonance Imaging[MESH]|*Tomography, X-Ray Computed[MESH]|Acquired Immunodeficiency Syndrome/*complications[MESH]|Brain Diseases/complications/*diagnosis/diagnostic imaging[MESH]|Brain Neoplasms/complications/*diagnosis/diagnostic imaging[MESH]|Brain/diagnostic imaging/pathology[MESH]|Cryptococcosis/complications/diagnosis/diagnostic imaging[MESH]|Cytomegalovirus Infections/complications/diagnosis/diagnostic imaging[MESH]|Humans[MESH]|Leukoencephalopathy, Progressive Multifocal/complications/diagnosis/diagnostic imaging[MESH]|Lymphoma/complications/diagnosis/diagnostic imaging[MESH]|Mycoses/complications/diagnosis/diagnostic imaging[MESH]|Opportunistic Infections/complications/*diagnosis/diagnostic imaging[MESH]|Sarcoma, Kaposi/complications/diagnosis/diagnostic imaging[MESH] |