Evaluation of generative models for synthetic CT images using SINGHA, a new spectrally informed metric
Motivation: Synthetic CT (sCT) based on MRI could improve the characterization of bone pathology by estimating bone mineral density and providing a high level of structural details. However, evaluating the performance of sCT is challenging in both respects. Goal(s): To propose an evaluation framework for sCT that quantifies accuracy both in terms of image intensity and depiction of structural details. Approach: We propose the new frequency-based metric SINGHA that captures the sharpness difference between images. Results: SINGHA was complementary to standard metrics and captured differences in high frequency content, thereby contributing to a more comprehensive evaluation of sCT images. Impact: Using the newly introduced Spectrally-INformed Grading of High-frequency Attributes (SINGHA) in conjunction with standard intensity-based metrics enables to simultaneously evaluate synthetic CT accuracy in terms of bone mineral density and sharpness.
Authors
- Veronica Ravano (ORCID: https://orcid.org/0000-0002-1532-9664)
- Tom Hilbert (ORCID: https://orcid.org/0000-0001-8207-4908)
- Paul Margain (ORCID: https://orcid.org/0009-0002-9191-9153)
- Jonas Richiardi (ORCID: https://orcid.org/0000-0002-6975-5634)
- Ahmed S. Elwakil (ORCID: https://orcid.org/0000-0002-3972-5434)
- Bénédicte Maréchal (ORCID: https://orcid.org/0000-0001-7866-2854)
- Patrick Omoumi (ORCID: https://orcid.org/0000-0002-3251-3666)
- Jean‐Philippe Thiran (ORCID: https://orcid.org/0000-0003-2938-9657)
- Thomas Yu (ORCID: https://orcid.org/0000-0002-5841-0198)
- Charbel Mourad (ORCID: https://orcid.org/0000-0002-6600-5678)
- Julien Favre (ORCID: https://orcid.org/0000-0002-2368-2070)
- Tobias Kober (ORCID: https://orcid.org/0000-0001-7598-9456)
- Stefan Sommer (ORCID: https://orcid.org/0000-0001-6784-0328)
Publication Details
- Journal
- Proceedings on CD-ROM - International Society for Magnetic Resonance in Medicine. Scientific Meeting and Exhibition/Proceedings of the International Society for Magnetic Resonance in Medicine, Scientific Meeting and Exhibition
- Published
- 2024-11-26
- DOI
- https://doi.org/10.58530/2024/2238
- Primary Topic
- Advanced X-ray and CT Imaging
- Type
- article
- Field-Weighted Citation Impact
- 0.00