Neuroimaging Findings in the Evaluation of Dementia: A Review

A.S. Desai, K.V. Lam, P. Patel, and S. Ifthikharuddin

View Article on Neurographics Website

Date of Activity Release: Dec. 1, 2017
Date of Activity Expiration: Dec. 1, 2020

Target Audience:
Intended for neuroradiologists and neuroradiology trainees with varying degrees of experience.

Learning Objective:
Describe the salient neuroimaging findings that distinguish the different types of dementia discussed in the article.

Dementia is defined as a decline in mental abilities severe enough to interfere with normal everyday activities. It is a generic term that encompasses a wide spectrum of clinical signs and symptoms, and can be caused by various etiologies, which include neurodegenerative processes, infections, intracranial hemorrhages, hydrocephalus, vascular etiologies, and certain genetic mutations. An accurate diagnosis of the underlying etiology can be challenging and relies on correlating the clinical and neuroimaging findings, which often requires invasive procedures for a definitive diagnosis. Overlapping clinical symptoms in certain types of dementias can make it especially difficult to make the correct diagnosis; imaging plays a critical role in these cases. This article describes the characteristic neuroimaging findings seen in common and some less common causes of dementia. When considered in the appropriate clinical context, the high sensitivity and specificity of these imaging findings allow for an early and accurate noninvasive diagnosis of the specific type of dementia.

Commercial Support
No commercial support was received for this activity.

Credit Designation Statement

The American Society of Neuroradiology is accredited by the Accreditation Council for Continuing Medical Education (ACCME) to provide continuing medical education for physicians.

The American Society of Neuroradiology designates this journal-based CME activity for a maximum of 1 AMA PRA Category 1 Credit(s)TM. Physicians should claim only the credit commensurate with the extent of their participation in the activity.

Method of Physician Participation:
Each participant will review the corresponding Neurographics article located at Upon completion, each physician will complete and pass a post-test with a score of at least 80% to receive a CME certificate.

All individuals in control of content have disclosed the following relevant financial relationships. All of these relationships were treated as a conflict of interest, and have been resolved (C7 SCS 6.1-6.2, 6.5)

Authors have no relevant financial relationships.





Barton Branstetter 

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Adam Flanders

Deputy Editor

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Associate Editor

Non-remunerative position, AUR6

Meng Law

Associate Editor

Stockholder, Clinical Imaging

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Associate Editor

Consultant, Boston Scientific, Inc.

Edward Escott

Associate Editor

Grant, Atherysys, Inc.; Royalties, Thieme Medical Publishers

Scott Faro

Associate Editor

None, N/A

Tina Young Poussaint

Associate Editor

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Dheeraj Ghandi

Associate Editor

Grant, Arstasis, Axera Inc.; Consultant, Covidien, EV3

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