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Evaluating the performance of generative adversarial network-synthesized periapical images in classifying C-shaped root canals

 Sujin Yang  ;  Kee-Deog Kim  ;  Eiichiro Ariji  ;  Natsuho Takata  ;  Yoshitaka Kise 
 SCIENTIFIC REPORTS, Vol.13(1) : 18038, 2023-10 
Journal Title
Issue Date
Dental Pulp Cavity* / diagnostic imaging ; Humans ; Neural Networks, Computer* ; Radiologists ; Vision Tests ; Related inform
This study evaluated the performance of generative adversarial network (GAN)-synthesized periapical images for classifying C-shaped root canals, which are challenging to diagnose because of their complex morphology. GANs have emerged as a promising technique for generating realistic images, offering a potential solution for data augmentation in scenarios with limited training datasets. Periapical images were synthesized using the StyleGAN2-ADA framework, and their quality was evaluated based on the average Frechet inception distance (FID) and the visual Turing test. The average FID was found to be 35.353 (± 4.386) for synthesized C-shaped canal images and 25.471 (± 2.779) for non C-shaped canal images. The visual Turing test conducted by two radiologists on 100 randomly selected images revealed that distinguishing between real and synthetic images was difficult. These results indicate that GAN-synthesized images exhibit satisfactory visual quality. The classification performance of the neural network, when augmented with GAN data, showed improvements compared with using real data alone, and could be advantageous in addressing data conditions with class imbalance. GAN-generated images have proven to be an effective data augmentation method, addressing the limitations of limited training data and computational resources in diagnosing dental anomalies. © 2023, Springer Nature Limited.
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2. College of Dentistry (치과대학) > Dept. of Advanced General Dentistry (통합치의학과) > 1. Journal Papers
Yonsei Authors
Kim, Kee Deog(김기덕) ORCID logo https://orcid.org/0000-0003-3055-5130
Yang, Sujin(양수진) ORCID logo https://orcid.org/0000-0001-5400-2667
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