Modelling Stochastic Sensor Noise via Mask-Conditioned Diffusion for Data Augmentation in Low-SNR LGE-CMR.

Sofia Fernandes^1,2, Carla Barros³, Adriano Pinto³, Vitor H Pereira^3,4, Carlos Lima^1,2,5, Carlos A Silva^1,2,5

¹Department of Industrial Electronics, School of Engineering, University of Minho, Campus de Azurém, 4800-058 Guimarães, Portugal.

²CMEMS-UMinho, Department of Industrial Electronics, School of Engineering, University of Minho, Campus de Azurém, 4800-058 Guimarães, Portugal.

³AI4MedImaging Medical Solutions, 4705-002 Braga, Portugal.

⁴Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal.

⁵LABBELS-Associate Laboratory, Braga, 4710-057 Guimarães, Portugal.

PubMed PMC DOI PDF

Abstract

Late gadolinium enhancement cardiovascular magnetic resonance (LGE-CMR) permits non-invasive quantification of myocardial fibrosis; however, automated scar segmentation remains challenging due to limited expert annotations and reduced image quality caused by acquisition noise and artefacts. We investigate two related questions: (i) whether inversion of a stochastic Gaussian diffusion process can r…

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