Making Reduced FOV Imaging Applicable on Low-Cost MRI Systems: A Sheared 2DRF Excitation Approach

作者：Bahadır Alp Barlas, Emine Ülkü Sarıtaş · 发表于：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 · 年份：2023 · DOI：10.58530/2022/2930 · 研究领域：Advanced MRI Techniques and Applications、Medical Imaging Techniques and Applications、Nuclear Physics and Applications

The utilization of low-cost low-field MRI systems has been rising due to the recent image quality improvements. However, these systems cannot incorporate numerous popular MRI techniques due to their hardware limitations. This work proposes a sheared 2DRF pulse design to make reduced FOV imaging applicable for low-cost MRI systems. The proposed sheared 2DRF pulse design provides significant reduction in pulse duration together with improved signal under B 0 field inhomogeneities, while ensuring robust sidelobe suppression and unlimited slice coverage. We demonstrate the proof-of-concept applicability of the proposed approach for a 0.35T and a 1.5T MRI scanner.