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Review
. 2023 Sep-Oct;24(7):558-563.
doi: 10.1080/15622975.2023.2191008. Epub 2023 Apr 12.

Psychiatric onset of prodromal dementia with Lewy bodies: Current insights into neuroimaging tools

Affiliations
Review

Psychiatric onset of prodromal dementia with Lewy bodies: Current insights into neuroimaging tools

Niels Hansen et al. World J Biol Psychiatry. 2023 Sep-Oct.

Abstract

Purpose: Our article is dedicated to describing the state-of-the-art in imaging techniques for assessing prodromal dementia with Lewy bodies (pro-DLB) with a psychiatric-onset.

Materials and methods: Imaging biomarker techniques are discussed.

Results: (123)-I-2-ß-carbomethoxy-3ß-(4-iodophenyl)-N-(3-fluoropropyl) nortropane single photon emission computed tomography (123I-FP-CIT SPECT) seems to be a promising method as it reveals abnormalities in pro-DLB with a psychiatric-onset. New potential biomarkers can be revealed via novel techniques, such as manual segmentation in magnetic resonance imaging (MRI), which helps detect atrophy of the substantia innominata in pro-DLB with a psychiatric-onset as opposed to an onset with mild cognitive impairment (MCI). FDG-PET can also help us distinguish patients with mixed pro-DLB from those pro-DLB patients with a psychiatric-onset or MCI-onset. Changes in large-scale networks in the posterior standard mode and in attentional networks could be early signs in resting-state functional MRI to characterise pro-DLB.

Conclusions: In conclusion, there is a wide range of techniques that need to be explored in large-scale studies and are of promising value in understanding pro-DLB with a psychiatric-onset.

Keywords: Prodromal dementia with Lewy bodies; biomarkers; neuroimaging; psychiatry; substantia innominate.

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