Motion-resolved 4D MRI using vision-assisted reference auto-navigation Conference Paper
| Authors: | Murray, V.; Otazo, R. |
| Title: | Motion-resolved 4D MRI using vision-assisted reference auto-navigation |
| Conference Title: | IEEE Southwest Symposium on Image Analysis and Interpretation (SSIAI 2024) |
| Abstract: | Improved motion navigation with efficient data usage and robustness remains a challenge for free-breathing MRI. This paper presents a new 2D auto-navigation technique called VAR-NAV developed for stack-of-stars acquisitions to address this challenge. VAR-NAV uses 2D projection images and multiscale AM-FM demodulation to directly estimate the position of the liver dome with 100% data efficiency. Results can be retrospectively corrected, similar to the VAR system in football video assistant referees. VAR-NAV is used to continuously sort acquired data and reconstruct motion-resolved 4D images, outperforming conventional ID PCA-based navigation without requiring additional acquisition. This efficient and accurate method of clinical 4D MRI offers a promising solution to the challenge of improved motion navigation. © 2024 IEEE. |
| Keywords: | medical imaging; navigation; dynamic mri; free breathing; motion analysis; motion detection; mri motion detection; value engineering; auto-navigation; data robustness; data usage; navigation techniques; star acquisition; vision-assisted |
| Journal Title | Proceedings of the IEEE Southwest Symposium on Image Analysis and Interpretation |
| Conference Dates: | 2024 Mar 17-19 |
| Conference Location: | Santa Fe, NM |
| ISBN: | 979-8-3503-6011-0 |
| Publisher: | Institute of Electrical and Electronics Engineers Inc. |
| Date Published: | 2024-01-01 |
| Start Page: | 17 |
| End Page: | 20 |
| Language: | English |
| DOI: | 10.1109/ssiai59505.2024.10508680 |
| PROVIDER: | scopus |
| DOI/URL: | |
| Notes: | Conference paper -- Source: Scopus |
