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Improvement of Ultra-Low Field Magnetic Resonance Recordings with a Multilayer Flux-Transformer-Based High-TC SQUID Magnetometerстатья
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 25 сентября 2013 г.
- Авторы: Maxim Chukharkin, Alexey Kalabukhov, Schneiderman Justin F., Fredrik Öisjöen, Magnus Jönsson, Minshu Xie, Snigirev Oleg V., and Dag Winkler
- Журнал: IEEE Transactions on Applied Superconductivity
- Том: 23
- Номер: 3
- Год издания: 2013
- Издательство: Institute of Electrical and Electronics Engineers
- Местоположение издательства: Piscataway, NJ, United States
- Первая страница: 1602704-1
- Последняя страница: 1602704-4
- DOI: 10.1109/TASC.2012.2234332
- Аннотация: We have developed a multilayer flux-transformer-based high-TC SQUID (flip-chip) magnetometer that improves signal-to-noise-ratios (SNR) in ultra-low field magnetic resonance (ulf-MR) recordings of protons in water. Direct ulf-MR-based benchmarking of the flip-chip versus a standard planar high-TC SQUID magnetometer resulted in improvement of the SNR by a factor of 2. This gain is attributable to the improved transformation coefficient (1.9 vs 5.3 nT/Φ0) that increased the signal available to the flip-chip sensor and to the lower noise at the measurement frequency (15 vs 25 fT/Hz1/2 at 4 kHz). The improved SNR can lead to better spectroscopic resolution, lower imaging times, and higher resolution in ulf-MR imaging systems based on high-TC SQUID technology. The experimental details of the sensors, calibration, and ulf-MR benchmarking are presented in this report.
- Добавил в систему: Снигирев Олег Васильевич