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European Journal of Nuclear Medicine and Molecular Imaging
Published in: European Journal of Nuclear Medicine and Molecular Imaging 10/2009

01-10-2009 | Original Article

Evaluation and comparison of 11C-choline uptake and calcification in aortic and common carotid arterial walls with combined PET/CT

Authors: Katsuhiko Kato, Otmar Schober, Mitsuru Ikeda, Michael Schäfers, Takeo Ishigaki, Peter Kies, Shinji Naganawa, Lars Stegger

Published in: European Journal of Nuclear Medicine and Molecular Imaging | Issue 10/2009

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Abstract

Purpose

Inflamed atherosclerotic plaques may rupture and cause acute myocardial infarction, stroke and other thrombotic events. Early detection of these unstable plaques could, in many cases, prevent such potentially fatal events. 11C-choline or 18F-labelled choline derivatives for visualizing the synthesis of phospholipids, are promising markers of plaque inflammation with potential advantages over 18F-FDG. Their potential for plaque characterization in humans is, however, unclear. In this study the prevalence and distribution of 11C-choline uptake in the aortic and common carotid arterial walls of elderly male patients was evaluated with combined PET/CT. Additionally, the localization of radiotracer uptake and calcification was correlated in various vessel segments.

Methods

Image data from 93 consecutive male patients between 60 and 80 years old who had undergone whole-body 11C-choline PET/CT assessment for prostate cancer were evaluated retrospectively. 11C-choline uptake and calcification were analysed qualitatively and semiquantitatively and compared.

Results

11C-choline uptake was found in 95% of patients, calcification in 94% throughout all vessel segments. In 6% of the patients radiotracer uptake was colocalized with calcifications, whereas less than 1% of calcification sites showed increased radiotracer uptake.

Conclusion

Both 11C-choline uptake and calcification in the aortic and common carotid arterial walls are common in elderly men. Radiotracer uptake and calcification are, however, only rarely colocalized. 11C-choline has the potential to provide information about atherosclerotic plaques independent of calcification measurement.
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Metadata
Title
Evaluation and comparison of 11C-choline uptake and calcification in aortic and common carotid arterial walls with combined PET/CT
Authors
Katsuhiko Kato
Otmar Schober
Mitsuru Ikeda
Michael Schäfers
Takeo Ishigaki
Peter Kies
Shinji Naganawa
Lars Stegger
Publication date
01-10-2009
Publisher
Springer-Verlag
Published in
European Journal of Nuclear Medicine and Molecular Imaging / Issue 10/2009
Print ISSN: 1619-7070
Electronic ISSN: 1619-7089
DOI
https://doi.org/10.1007/s00259-009-1152-7

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