ArticleEJNMMI physics2026
Estimation of the effective dose in torso
Article in EJNMMI physics, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
1 citing paper in PubMed.
- Metabolic reprogramming in radiation-induced heart disease: the emerging role of PET imaging.Frontiers in cardiovascular medicine · 2026Review
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Authors and funding
7 authors.
Funding
Abstract
backgroundLarge-scale estimation of effective dose (ED) for positron emission tomography (PET)/computed tomography (CT) remains limited. This study aimed to determine the ED of torso 18F-fluorodeoxyglucose (FDG) PET/CT using extensive real-world clinical data from a high-volume centre. Differences in ED were also evaluated according to PET/CT scanner type, patient sex, and body size.
methodsA retrospective analysis was performed on PET/CT examinations from individuals aged ≥ 16 years and acquired between March 2019 and June 2022. Five PET/CT scanners were used during the study period. CT ED was calculated by multiplying the dose length product (DLP) by an ED/DLP conversion coefficient. PET ED was estimated using injected 18F-FDG activity and the conversion factor reported in International Commission on Radiological Protection Publication 106. Total PET/CT ED was computed as the sum of CT and PET ED values.
resultsA total of 51,784 examinations were analysed (mean age, 61.9 ± 12.6 years; 29,990 men). Mean CT ED was 3.7 ± 1.5 mSv in men and 3.7 ± 1.7 mSv in women. CT ED varied according to scanner type and protocol, with newer scanners and advanced image processing technologies associated with lower radiation exposure. A strong positive correlation was observed between volume CT dose index and body mass index across all scanners. Mean PET ED of PET was 6.6 ± 1.1 mSv in men and 5.6 ± 1.0 mSv in women. Mean total PET/CT ED was 10.2 ± 2.4 mSv in men and 9.3 ± 2.5 mSv in women.
conclusionsThe mean ED of torso 18F-FDG PET/CT derived from extensive real-world clinical data was comparable to that of conventional diagnostic CT. Both patient-related factors, including sex and body size, and scanner-specific characteristics, such as dose modulation algorithms, significantly influenced ED.
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