Systemic sclerosis & Raynaud's

Vision transformer assisting rheumatologists in screening for capillaroscopy changes in systemic sclerosis: an artificial intelligence model

Rheumatology (Oxford)Published Diagnostic accuracy study

An erratum to this article was published (Rheumatology (Oxford), 1 Sep 2023 ↗)

Authors' conclusion

The ViT is a modern, well-performing and readily available tool for assessing patterns of microangiopathy on NFC images, and it may assist rheumatologists in generating consistent and high-quality NFC reports

Study context

Population
Nailfold capilloroscopy (NFC) images of patients with SSc prospectively enrolled in local EUSTAR and Very Early Diagnosis of Systemic Sclerosis (VEDOSS) registries
Participants
17,126 NFC images
Comparison
Vision transformer (ViT) vs practising rheumatologists for identifying microangiopathic changes on NFC images
Outcome
ViT classification performance for disease-associated changes (enlarged capillaries, giant capillaries, capillary loss, microhaemorrhages) and scleroderma pattern, cross-fold validation
Methodological detailsvision transformer (ViT)-based deep-learning model, cross-fold validation, prospectively enrolled registry patients
  • Vision transformer (ViT)-based deep-learning model
  • Cross-fold validation
  • Prospectively enrolled registry patients

Performance

As reported in the abstract

Identification of microangiopathic changes on NFC
Test or modelAUC
ViT81.8% to 84.5%

ViT

AUC81.8% to 84.5%

Secondary outcomes

ViT vs rheumatologists on reliability set (464 NFC images, majority vote-derived ground truth)

Rheumatologists reached higher average accuracy and better sensitivity–specificity trade-off than ViT
Annotators' performance variable; one out of four rheumatologists showed equal or lower classification measures than ViT

Original publication

Vision transformer assisting rheumatologists in screening for capillaroscopy changes in systemic sclerosis: an artificial intelligence model. Rheumatology (Oxford). Published 9 November 2022. doi:10.1093/rheumatology/keac541

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