波谱学杂志2025，Vol.42Issue(3)：299-307,9.DOI:10.11938/cjmr20253148
宽频磁共振微线圈设计
Design of the Broadband Magnetic Resonance Microcoil
摘要
Abstract
The detection of microsamples holds extensive application demands in fields such as environmental monitoring,biological sciences,and medicine.When conventional magnetic resonance probes are used to detect microsamples,the smaller filling factors lead to reduced signal-to-noise ratios(SNR)in magnetic resonance detection.Using microcoils comparable in size to the microsamples can significantly improve detection sensitivity and enhance SNR.Furthermore,due to the growing demand for broadband detection,there is a desire to reduce experimental steps during sample analysis and shorten detection times.However,currently available commercial probes are not designed for microsample detection and are relatively too complex to meet the requirements for efficient and convenient applications.To address these issues,this study designed a multilayer solenoid microcoil with excellent field uniformity,low inductance,and resistance.The coil was fabricated using printed circuit board(PCB)technology and tested on a 1.5 T MRI system magnet equipped with a self-developed spectrometer and broadband RF front end,where multiple nuclei(1H,2H,7Li,19F)were detected in 250 nL samples,demonstrating broadband capability and high sensitivity.The results highlight its potential for efficient and versatile microsample analysis.关键词
核磁共振/微线圈/宽频/印刷电路板Key words
nclear magnetic resonance(NMR)/microcoil/broadband/printed circuit board(PCB)分类
数理科学引用本文复制引用
江超超,姚守权,徐俊成,蒋瑜..宽频磁共振微线圈设计[J].波谱学杂志,2025,42(3):299-307,9.基金项目
上海市科技创新行动计划资助项目(19142202900) （19142202900）
国家自然科学基金资助项目(21874045). （21874045）
