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Table 3 Five-point Deauville score system

From: PET/CT imaging for tumour response assessment to immunotherapy: current status and future directions

Score

Metabolic activity of lymphoma

1

No 18F-FDG-uptake above background activity

2

18F-FDG-uptake ≤ mediastinal blood pool activity

3

18F-FDG-uptake between mediastinal blood pool and liver activity

4

18F-FDG-uptake moderately higher than liver activity

5

18F-FDG-uptake markedly higher than liver activity/new lesion(s)

X

New areas of 18F-FDG-uptake unlikely related to lymphoma

  1. FDG Fluorodeoxyglucose