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dc.contributor.author
Becker, Anton S.
dc.contributor.author
Nagel, Hannes W.
dc.contributor.author
Wolfrum, Christian
dc.contributor.author
Burger, Irene A.
dc.date.accessioned
2018-08-16T09:45:28Z
dc.date.available
2017-06-12T02:33:26Z
dc.date.available
2018-08-16T09:45:28Z
dc.date.issued
2016-02-22
dc.identifier.issn
1932-6203
dc.identifier.other
10.1371/journal.pone.0149458
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/114099
dc.identifier.doi
10.3929/ethz-b-000114099
dc.description.abstract
Background Recent advances in obesity research suggest that BAT activity, or absence thereof, may be an important factor in the growing epidemic of obesity and its manifold complications. It is thus important to assess larger populations for BAT-activating and deactivating factors. 18FDG-PET/CT is the standard method to detect and quantify metabolic BAT activity, however, the manual measurement is not suitable for large studies due to its time-consuming nature and poor reproducibility across different software and devices. Methodology/Main Findings In a retrospective study, 1060 consecutive scans of 1031 patients receiving a diagnostic 18FDG-PET/CT were examined for the presence of active BAT. Patients were classified according to a 3-tier system (supraclavicular, mediastinal, infradiaphragmatic) depending on the anatomical location of their active BAT depots, with the most caudal location being the decisive factor. The metabolic parameters (maximum activity, total volume and total glycolysis) were measured on a standard PET/CT workstation. Mean age of the population was 60±14.6y. 41.61% of patients were female. Metabolically active BAT was found in 53 patients (5.1%). Female, younger and leaner patients tended to have more active BAT, higher metabolic activity and more caudally active BAT. In total, 15 patients showed only supraclavicular, 27 additional mediastinal, and 11 infradiaphragmal activity. Interestingly, the activation of BAT always followed a cranio-caudal gradient. This anatomical pattern correlated with age and BMI as well as with all metabolic parameters, including maximum and total glycolysis (p<0.001). Conclusion Based on our data we propose a simple method to grade or quantify the degree of BAT amount/activity in patients based on the most caudally activated depot. As new modalities for BAT visualization may arise in the future, this system would allow direct comparability with other modalities, in contrary to the PET-metrics, which are restricted to 18FDG-PET/CT.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Public Library of Science
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/4.0/
dc.title
Anatomical Grading for Metabolic Activity of Brown Adipose Tissue
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 4.0 International
ethz.journal.title
PLoS ONE
ethz.journal.volume
11
en_US
ethz.journal.issue
2
en_US
ethz.journal.abbreviated
PLoS ONE
ethz.pages.start
e0149458
en_US
ethz.size
12 p.
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.identifier.scopus
ethz.identifier.nebis
006206116
ethz.publication.place
San Francisco, CA
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02070 - Dep. Gesundheitswiss. und Technologie / Dep. of Health Sciences and Technology::02701 - Inst.f. Lebensmittelwiss.,Ernährung,Ges. / Institute of Food, Nutrition, and Health::03819 - Wolfrum, Christian / Wolfrum, Christian
en_US
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02070 - Dep. Gesundheitswiss. und Technologie / Dep. of Health Sciences and Technology::02701 - Inst.f. Lebensmittelwiss.,Ernährung,Ges. / Institute of Food, Nutrition, and Health::03819 - Wolfrum, Christian / Wolfrum, Christian
ethz.date.deposited
2017-06-12T02:35:32Z
ethz.source
ECIT
ethz.identifier.importid
imp593654371010a63981
ethz.ecitpid
pub:175871
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2017-07-18T14:38:19Z
ethz.rosetta.lastUpdated
2018-11-07T23:25:34Z
ethz.rosetta.versionExported
true
ethz.COinS
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