Toward Ultra-High-Quality-Factor Wireless Masing MRI Sensing
Motivation: There is a number of limitations using conventional MRI sensing relying on spontaneous emission of NMR signals, including the requirements for high-power RF amplifier, limited sampling rate, FID decay according to T2*. Goal(s): Our goal is to employ stimulated emission via Radiofrequency Amplification by Stimulated Emission of Radiation (RASER) to address the limitations of conventional MRI. Approach: Parametric pumping was employed to boost quality factor of a MRI coil using 7T MRI scanner. Results: We show wireless MRI maser detector, the quality factor of which was enhanced from 75 up to 1,000,000 for RASER applications at 300 MHz that was otherwise not possible. Impact: Parametric pumping enables stimulated emission or masing of MRI signal under virtually any conditions of hyperpolarized media with inverted polarization, making RASER a universal approach for sensitive detection modality of hyperpolarized media on virtually any MRI scanner.
Authors
- Stephan Appelt (ORCID: https://orcid.org/0000-0001-6036-2167)
- Soeren Lehmkuhl
- Henri de Maissin (ORCID: https://orcid.org/0000-0003-3505-1572)
- Thomas Theis (ORCID: https://orcid.org/0000-0001-6779-9978)
- Andreas Benjamin Schmidt (ORCID: https://orcid.org/0000-0001-8944-7463)
- Simon Fleischer (ORCID: https://orcid.org/0000-0003-3554-8888)
- Mustapha Abdulmojeed (ORCID: https://orcid.org/0000-0002-5513-3658)
- Shiraz Nantogma (ORCID: https://orcid.org/0000-0002-2655-6256)
- Eduard Y. Chekmenev (ORCID: https://orcid.org/0000-0002-8745-8801)
- Chunqi Qian (ORCID: https://orcid.org/0000-0003-4528-4572)
- Isaiah Adelabu (ORCID: https://orcid.org/0000-0002-9475-0851)
- Matthew S. Rosen (ORCID: https://orcid.org/0000-0002-7194-002X)
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/10.58530/2025/4411
- Primary Topic
- Advanced Computing and Algorithms
- Type
- article
- Field-Weighted Citation Impact
- 0.00