Gespeichert in:
| Hauptverfasser: | , , , , , , |
|---|---|
| Format: | Preprint |
| Veröffentlicht: |
2026
|
| Schlagworte: | |
| Online-Zugang: | https://arxiv.org/abs/2605.29753 |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| _version_ | 1866910269425319936 |
|---|---|
| author | Jerald, Antony Aggarwal, Hemant K Nett, Brian Gopal, Avinash Yalavarthy, Phaneendra K Das, Bipul Langoju, Rajesh |
| author_facet | Jerald, Antony Aggarwal, Hemant K Nett, Brian Gopal, Avinash Yalavarthy, Phaneendra K Das, Bipul Langoju, Rajesh |
| contents | Dual-energy CT (DECT) enables virtual monochromatic imaging (VMI) and improved contrast resolution, but its clinical adoption is limited by hardware complexity and cost. In this work, we propose a unified deep learning framework that synthesizes contrast-phase-specific virtual monochromatic 50 keV images from single-energy CT (SECT) data by leveraging contrast phase information as a prior. The model is trained using DECT-derived 70 keV and 50 keV image pairs across four contrast phases -- Angio, Arterial, Portal, and Delayed -- using a novel prior conditioning architecture that integrates contrast phase priors into the energy transformation process. We demonstrate that the proposed unified model achieves contrast enhancement and generalizes well across contrast phases. Additionally, we show that the model can generate 50 keV-like images from SECT inputs, preserving contrast phase-specific dynamics. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2605_29753 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | A unified deeplearning framework for contrast-phase-specific virtual monochromatic imaging Jerald, Antony Aggarwal, Hemant K Nett, Brian Gopal, Avinash Yalavarthy, Phaneendra K Das, Bipul Langoju, Rajesh Image and Video Processing Artificial Intelligence Dual-energy CT (DECT) enables virtual monochromatic imaging (VMI) and improved contrast resolution, but its clinical adoption is limited by hardware complexity and cost. In this work, we propose a unified deep learning framework that synthesizes contrast-phase-specific virtual monochromatic 50 keV images from single-energy CT (SECT) data by leveraging contrast phase information as a prior. The model is trained using DECT-derived 70 keV and 50 keV image pairs across four contrast phases -- Angio, Arterial, Portal, and Delayed -- using a novel prior conditioning architecture that integrates contrast phase priors into the energy transformation process. We demonstrate that the proposed unified model achieves contrast enhancement and generalizes well across contrast phases. Additionally, we show that the model can generate 50 keV-like images from SECT inputs, preserving contrast phase-specific dynamics. |
| title | A unified deeplearning framework for contrast-phase-specific virtual monochromatic imaging |
| topic | Image and Video Processing Artificial Intelligence |
| url | https://arxiv.org/abs/2605.29753 |