Molecular imaging: What is right and what is an illusion?

Alzheimer's & Dementia : Diagnosis, Assessment & Disease Monitoring
William E Klunk

Abstract

Over the past 40 years, brain molecular imaging has evolved from measuring cerebral metabolism with fluorodeoxyglucose, to neuroreceptor imaging, to imaging pathological protein deposits. In the early going, the characteristics of successful molecular imaging radiotracers were defined, and a detailed "Process" was developed for the collection of basic pharmacodynamic and pharmacokinetic data. These data are essential for the interpretation of in vivo imaging data and for defining the strengths, weaknesses, and limitations of new tracers. This perspective discusses the use of this "Process" in the development of the amyloid β positron emission tomography radiotracer, Pittsburgh Compound-B, and discusses some of the current controversies and difficulties in the field of tau positron emission tomography in the context of human data that preceded completion of this radiotracer characterization process-which still remains to be completed. As a field, we must decide which data are valid and which are artifacts and determine that when the artifacts are so overwhelming, the data are merely an illusion.

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Citations

Dec 19, 2019·European Journal of Nuclear Medicine and Molecular Imaging·Jolien SchaeverbekeRik Vandenberghe
Nov 19, 2019·Biological Psychiatry·Thomas VogelsMichael Schöll
Feb 17, 2021·European Journal of Nuclear Medicine and Molecular Imaging·Gérard N BischofAlexander Drzezga
Jan 2, 2021·Journal of Nuclear Medicine : Official Publication, Society of Nuclear Medicine·Victor L VillemagneAnn D Cohen
Jul 25, 2019·ACS Chemical Neuroscience·Lindsey R DrakePeter J H Scott

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