Feasibility of Velocity-Selective ASL MRA at 5T
Motivation: Ultra-high field (UHF) provides improved SNR that benefits velocity-selective arterial spin labeling (VSASL) MRA; however, the sensitivity of VS prepulses to B0 and B1 inhomogeneities may render VS ASL MRA impractical. Goal(s): This study aims to assess the feasibility of VS ASL MRA for human brain at 5T. Approach: Double-refocused hyperbolic-secant (DRHS) module, B1-independent rotation (BIR)-4 module, and BIR-8 module based VS ASL MRA were implemented and compared at 5T. Results: The VS ASL MRA utilizing BIR-4 or BIR-8 modules at 5T had decent image quality, although there exist subtraction errors in static tissues. Impact: The study suggests that VS ASL MRA at 5T is feasible.
Authors
- Xianyi Zhang (ORCID: https://orcid.org/0000-0003-2518-3651)
- Zhensen Chen (ORCID: https://orcid.org/0000-0001-7975-2528)
- Haiyan Wang (ORCID: https://orcid.org/0000-0001-9837-7970)
- Xijing Zhang (ORCID: https://orcid.org/0000-0001-8719-1142)
- Lixin Liu (ORCID: https://orcid.org/0000-0002-4810-9449)
- Jiayu Zhu (ORCID: https://orcid.org/0009-0001-3552-3755)
- LI Hong-we (ORCID: https://orcid.org/0000-0003-1119-2119)
- Ziqi Sun
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
- 2025-09-16
- DOI
- https://doi.org/10.58530/2025/3701
- Primary Topic
- Advanced MRI Techniques and Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.00