Osteoporosis and Sarcopenia

Computer model detected fractures and located bones in spine scans

The model scored 0.952 for distinguishing scans with fractures from those without, compared with 0.913 for an earlier detection-only model.

Fig. 1. Overview of the proposed study.
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Fig. 1. Overview of the proposed study.Overview of the proposed study.Cho et al., CC BY-NC-ND
Computational studyBiomarkers

1,000 participants, cohort study

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In a computational study, researchers used spine scans from 1,000 community-dwelling adults aged 65 or older in the Korean Urban Rural Elderly cohort. The images came from dual-energy X-ray absorptiometry, a type of bone scan used here to assess spine fractures. They trained the model on scans from 800 participants and tested it on scans from the remaining 200.

The model both located individual spine bones and detected fractures. Its score for distinguishing scans with fractures from those without was 0.952, compared with 0.913 for an earlier detection-only model. It identified 89.7% of scans with fractures and correctly classified 94.2% of scans without them. It located 94.7% of fractured spine bones within 15 pixels of their reference position.

Why it matters

The work focused on assessing osteoporotic spine fractures in older adults. It bears on how computer models might support that assessment.

Caveats

This computational study measured performance on images, not benefits for patients. The test set contained 200 participants from one Korean cohort.

From the paper

Participants

Among 3517 participants enrolled at baseline, 3508 had an available DXA VFA image.

Methods, Study population and design

Result

… with the difference in MRE remaining significant after scan-level cluster bootstrap adjustment (mean difference 11.19 px, 95% CI 5.95–16.71, P < 0.001).

Results, Comparison with single-task models

Limitation

First, the model was drawn from a single community cohort of Korean older adults using a single DXA manufacturer and was not evaluated in a sex-stratified manner due to the small number of fracture-positive men in the test set.

Discussion

Quoted word for word from the full text on PubMed Central.