These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: Effects of coverage extent and slice skipping on mean and maximum arterial 18F-FDG uptake ratios in patients with carotid plaque.
    Author: Noh TS, Yoo J, Kim SW, Lee EJ, Choi JY, Kim BT, Lee KH.
    Journal: Ann Nucl Med; 2012 Nov; 26(9):715-22. PubMed ID: 22802009.
    Abstract:
    PURPOSE: To investigate the effects of variable measurement methods on mean and maximum SUV ratios of 18F-FDG uptake in carotid arteries. METHODS: 18F-FDG PET/CT images of 74 subjects with carotid plaque were analyzed for mean and maximum target-to-background ratio (TBR) of uptake. Agreement was analyzed between TBR scores obtained using different vessel coverage and slice skipping. RESULTS: Mean TBR was increased by extending coverage from common carotid artery (CCA; 1.25) to carotid artery (CA; 1.33) and inclusion of ascending aorta (CA/AA; 1.34). Maximum TBR was increased from 1.47 to 1.54 and 1.61 by respective extensions. Both mean and maximum TBR were closely correlated between vessels. ICC and Kappa statistics revealed near perfect agreement between TBR obtained using every 2 or 3 segments and that without sipping. Bland-Altman plots showed bias by slice skipping to remain small, particularly for mean TBR. Finally, high correlations were displayed between mean and maximum TBR. CONCLUSIONS: Analysis of mean and maximum arterial 18F-FDG uptake in patients with carotid plaque is likely to benefit from extending coverage to segments above and below the CCA. The extra burden of measurement, in turn, can be lightened by skipping up to every 2 of 3 slices without compromising accuracy of results.
    [Abstract] [Full Text] [Related] [New Search]