Hi sueg. I'm really glad you asked this question 'cause I've been having more CNS (central nervous system) problems lately. So, I did some research and found that Sjogren's damage does show up on some brain scans. The 3 most useful and practical neurodiagnostic studies in evaluating Sjogren's patients suspected of having active brain involvement are brain/spinal cord MRI, EEG, and CSF (spinal tap).
EEG (electroencephalogram) and MMER (multimodality evoked response testing) may be clinically useful in evaluating and following Sjogren's CNS patients.
Brain CT scans are relatively insensitive.
SPECT measures regional blood flow. Some Sjogren's patients can have normal MRIs and abnormal SPECT.
Cerebral angiography is used to establish a potential diagnosis of CNS vasculitis.
Well I certainly learned something and I hope it helps you too. Love, Butterflake