Title
Unsupervised detection of disturbances in 2D radiographs
Date Issued
13 April 2021
Access level
metadata only access
Resource Type
conference paper
Author(s)
Publisher(s)
IEEE Computer Society
Abstract
We present a method based on a generative model for detection of disturbances such as prosthesis, screws, zippers, and metals in 2D radiographs. The generative model is trained in an unsupervised fashion using clinical radiographs as well as simulated data, none of which contain disturbances. Our approach employs a latent space consistency loss which has the benefit of identifying similarities, and is enforced to reconstruct X-rays without disturbances. In order to detect images with disturbances, an anomaly score is computed also employing the Frechet distance between the input X-ray and the reconstructed one using our generative model. Validation was performed using clinical pelvis radiographs. We achieved an AUC of 0.77 and 0.83 with clinical and synthetic data, respectively. The results demonstrated a good accuracy of our method for detecting outliers as well as the advantage of utilizing synthetic data.
Start page
367
End page
370
Volume
2021-April
Language
English
OCDE Knowledge area
Ciencias médicas, Ciencias de la salud
Ingeniería de sistemas y comunicaciones
Subjects
Scopus EID
2-s2.0-85107194158
ISSN of the container
19457928
ISBN of the container
978-166541246-9
Conference
Proceedings - International Symposium on Biomedical Imaging
Sources of information:
Directorio de Producción Científica
Scopus