FDG PET/CT Dementia (e.g. Alzheimer’s)

CMS Insurance Coverage Comment

Approved: CPT 78608

FDG PET/CT Visualizing Alzheimer’s Dementia

FDG PET study showing dominant cortical hypometabolism in bilateral parieto-temporal lobes, L > R, including the posterior cingular gyri (arrow on the sagittal plane), a pattern suspicious for Alzheimer's dementia (AD)

Dementia overview

“Dementia describes a group of symptoms associated with a decline in memory, reasoning, or other thinking skills. Many different types of dementia exist, and many conditions cause it. Mixed dementia is a condition in which brain changes of more than one type of dementia occur simultaneously. Alzheimer's disease is the most common cause of dementia, accounting for 60-80% of dementia cases.

Dementia is not a normal part of aging. It is caused by damage to brain cells that affects their ability to communicate, which can affect thinking, behavior, and feelings.”

Alzheimer’s overview

“Alzheimer’s is a degenerative brain disease that is caused by complex brain changes following cell damage. It leads to dementia symptoms that gradually worsen over time. The most common early symptom of Alzheimer’s is trouble remembering new information because the disease typically impacts the part of the brain associated with learning first.

As Alzheimer’s advances, symptoms get more severe and include disorientation, confusion and behavior changes. Eventually, speaking, swallowing and walking become difficult.

Though the greatest known risk factor for Alzheimer’s is increasing age, the disease is not a normal part of aging. And though most people with Alzheimer’s are 65 and older, approximately 200,000 Americans under 65 are living with early-onset Alzheimer’s disease.”

source: https://www.alz.org/alzheimers-dementia/difference-between-dementia-and-alzheimer-s