Brain CT scan is helpful in the diagnosis the underlying cause of delirium. Findings on brain CT scan among patients admitted with delirium include: acute or subacute infarct, haemorrhage, abscess, neoplasm, vasculitis, posterior reversible encephalopathy syndrome,  encephalitis,  acute demyelination, Fat embolism.
Delirium CT
Delirium MRI
Delirium tremens CT
Dementia CT
Tremor CT
Amnesia CT
Dementia MRI
Cognitive neuropsychology