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<< Transient Global Amnesia: Emergency Department Evaluation And Management

Controversies And Cutting Edge

What is the role for advanced imaging?

There is no clinical role for advanced imaging positron emission tomography (PET) or single-photon emission computerized tomography (SPECT). An MRI with DWI can be used to exclude acute ischemia syndromes and to rule out malignancy or a space-occupying lesion when suspicion is elevated by the presence of relevant symptoms. While PET and SPECT imaging have been used by researchers in an attempt to establish the etiology of TGA, these modalities are research-centered and do not contribute to the diagnosis of TGA in the ED.

Are there any serologic biomarkers that have been investigated in association with TGA?

Some studies have suggested that patients with TGA are at increased likelihood to have abnormalities in certain blood markers, including aspartate aminotransferase, alanine aminotransferase, lactate dehydrogenase, and glutamate,103 and

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